Talk_id  Date  Speaker  Title 
14372

Monday 8/20 11:00 AM

Soumyashant Nayak, University of Pennsylvania

Analyticity in Operator Algebras
 Soumyashant Nayak, University of Pennsylvania
 Analyticity in Operator Algebras
 08/20/2018
 11:00 AM  12:00 PM
 C517 Wells Hall
The title of this talk is borrowed from a seminal paper by Arveson discussing noncommutative analogues of the Hardy space H^∞(T) via the socalled subdiagonal algebras. Subdiagonal algebras are a family of nonselfadjoint operator algebras which give a common perspective to the study of some triangular operator algebras (for example, the algebra of block upper triangular matrices in M_n(C)), Dirichlet function algebras, etc. The first part of the talk will be about a noncommutative version of innerouter factorization in finite maximal subdiagonal algebras. We will then discuss a proof of a version of Jensen's inequality in this setting which relates to some classical results by Szegö.

14373

Friday 8/24 4:10 PM

Hyenkyun Woo, Korea University of Technology & Education

Bregmandivergence for Legendre exponential families and data analysis
 Hyenkyun Woo, Korea University of Technology & Education
 Bregmandivergence for Legendre exponential families and data analysis
 08/24/2018
 4:10 PM  5:00 PM
 C517 Wells Hall
Bregmandivergence is a wellknown generalized distance framework in various applications, such as machine learning and image processing. In this talk, by using dual structure of the Bregmandivergence associated with the subclass of convex function of Legendre function, we analyze the structure of the Legendre exponential families whose cumulant function corresponds to the conjugate convex function of Legendre type. Actually, Legendre exponential families are the extended version of the regular exponential families to include nonregular exponential families, such as the inverse Gaussian distribution. The main advantage of the proposed Bregmandivergencebased approach is that it offers systematic successive approximation tools to handle closed domain issues arising in nonregular exponential families and the statistical distribution having discrete random variables, such as Bernoulli distribution and Poisson distribution. In addition, we also introduce the generalized centerbased clustering algorithm based on the Tweedie distribution.

14375

Friday 8/31 4:10 PM

Gerard Awanou, University of Illinois, Chicago

Discrete Aleksandrov solutions of the MongeAmpere equation
 Gerard Awanou, University of Illinois, Chicago
 Discrete Aleksandrov solutions of the MongeAmpere equation
 08/31/2018
 4:10 PM  5:00 PM
 1502 Engineering Building
A discrete analogue of the Dirichlet problem of the Aleksandrov theory of the MongeAmere equation is derived in this paper. The discrete solution is not required to be convex, but only discrete convex in the sense of Oberman. We prove that the uniform limit on compact subsets of discrete convex functions which are uniformly bounded and which interpolate the Dirichlet boundary data is a continuous convex function which satisfies the boundary condition strongly. The domain of the solution needs not be uniformly convex. We obtain the first proof of convergence of a wide stencil finite difference scheme to the Aleksandrov solution of the elliptic MongeAmpere equation when the right hand side is a sum of Dirac masses. The discrete scheme we analyze for the Dirichlet problem, when coupled with a discretization of the second boundary condition, as proposed by Benamou and Froese, can be used to get a good initial guess for geometric methods solving optimal transport between two measures.

13345

Thursday 9/6 2:00 PM

Alex Waldron, MSU

YangMills flow in dimension four
 Alex Waldron, MSU
 YangMills flow in dimension four
 09/06/2018
 2:00 PM  3:00 PM
 C304 Wells Hall
Among the classical geometric evolution equations, YM flow is the least nonlinear and best behaved. Nevertheless, curvature concentration is a subtle problem when the base manifold has dimension four. I'll discuss my proof that finitetime singularities do not occur, and briefly describe the infinitetime picture.

15388

Thursday 9/6 3:00 PM

Daping Weng, MSU

Cluster DonaldsonThomas Transformation of Grassmannian
 Daping Weng, MSU
 Cluster DonaldsonThomas Transformation of Grassmannian
 09/06/2018
 3:00 PM  4:00 PM
 C117 Wells Hall
Abstract: On the one hand, there is a 3d Calabi Yau category with stability conditions associated to a quiver without loops or 2cycles with generic potential, and one can study its DonaldsonThomas invariants. On the other hand, such a quiver also defines a cluster Poisson variety, which is constructed by gluing a collection of algebraic tori in a certain way governed by combinatorics. In certain cases, the DonaldsonThomas invariants of the former category can be captured by an automorphism on the latter space. In this talk, I will recall the cluster Poisson structure on the moduli space of configurations of points in a projective space, and state my result on constructing the corresponding cluster DonaldsonThomas transformation, and give a new proof of Zamolodchikov’s periodicity conjecture in the $A_m\boxtimes A_n$ cases as an application. If time permits, I will also talk about the generalization of this result to double Bruhat cells.

14378

Friday 9/7 4:10 PM

Tom Needham, Ohio State University

GromovMonge Quasimetrics and Distance Distributions
 Tom Needham, Ohio State University
 GromovMonge Quasimetrics and Distance Distributions
 09/07/2018
 4:10 PM  5:00 PM
 C304 Wells Hall
In applications in computer graphics and computational anatomy, one seeks measurepreserving maps between shapes which preserve geometry as much as possible. Inspired by this, we define a distance between arbitrary compact metric measure spaces by blending the Monge formulation of optimal transport with the GromovHausdorff construction. We show that the resulting distance is an extended quasimetric on the space of compact mmspaces, which has convenient lower bounds defined in terms of distance distributions. We provide rigorous results on the effectiveness of these lower bounds when restricted to simple classes of mmspaces such as metric graphs or plane curves.This is joint work with Facundo Mémoli.

15399

Monday 9/10 1:00 PM

Nick Ovenhouse, MSU

Hochschild Cohomology
 Nick Ovenhouse, MSU
 Hochschild Cohomology
 09/10/2018
 1:00 PM  1:50 PM
 C517 Wells Hall
I will give the basic definitions of Hochschild cohomology, and discuss interpretations of the first few cohomology groups H^0, H^1, and H^2. Time permitting, I will discuss how the groups H^2 and H^3 are related to formal deformations of algebras and quantization of Poisson brackets.

15401

Wednesday 9/12 4:00 PM

Alex Waldron, MSU

YangMills flow in dimension four
 Alex Waldron, MSU
 YangMills flow in dimension four
 09/12/2018
 4:00 PM  4:50 PM
 C517 Wells Hall
Among the classical geometric evolution equations, YM flow is the least nonlinear and best behaved. Nevertheless, curvature concentration is a subtle problem when the base manifold has dimension four. I'll discuss my proof that finitetime singularities do not occur, and briefly describe the infinitetime picture.
This talk will be more analytic and contains <50% overlap with my talk last Thursday.

15400

Thursday 9/13 1:00 PM

Leonardo Abbrescia, MSU

Newton's method and periodic solutions of nonlinear wave equations
 Leonardo Abbrescia, MSU
 Newton's method and periodic solutions of nonlinear wave equations
 09/13/2018
 1:00 PM  2:00 PM
 C304 Wells Hall
We will introduce the paper of Walter Craig and C. E. Wayne of the same name as the title of the talk. We will hopefully cover the first eleven pages.

13292

Thursday 9/13 2:00 PM

Rita Gitik, Michigan

On Tame Subgroups of Finitely Presented Groups
 Rita Gitik, Michigan
 On Tame Subgroups of Finitely Presented Groups
 09/13/2018
 2:00 PM  2:50 PM
 C304 Wells Hall
We describe several examples of tame subgroups of finitely presented groups and prove that the fundamental groups of certain finite graphs of groups are locally tame.

15393

Thursday 9/13 3:00 PM

Dylan Rupel, MSU

The Combinatorics of Compatible Pairs
 Dylan Rupel, MSU
 The Combinatorics of Compatible Pairs
 09/13/2018
 3:00 PM  4:00 PM
 C117 Wells Hall
Abstract: Compatible subsets of edges in a maximal Dyck path were introduced by Lee, Li, and Zelevinsky as a tool for constructing nice bases for rank two cluster algebras. In this talk, I will present a generalization of this combinatorics and give two applications. The first application is a combinatorial construction of noncommutative rank two generalized cluster variables which proves a conjecture of Kontsevich. The second application gives a combinatorial description of the cells in an affine paving of rank two quiver Grassmannians, this part is joint work with Thorsten Weist.

15384

Thursday 9/13 4:10 PM


Postdoc Lightning Talks

 Postdoc Lightning Talks
 09/13/2018
 4:10 PM  5:00 PM
 C304 Wells Hall
No abstract available.

14376

Friday 9/14 4:10 PM

Dongwook Lee, University of California, Santa Cruz

New Polynomialfree, Variable Highorder Methods using Gaussian Process Modeling for CFD
 Dongwook Lee, University of California, Santa Cruz
 New Polynomialfree, Variable Highorder Methods using Gaussian Process Modeling for CFD
 09/14/2018
 4:10 PM  5:00 PM
 1502 Engineering Building
In this talk, an entirely new class of highorder numerical algorithms for computational fluid dynamics is introduced. The new method is based on the Gaussian Processes (GP) modeling that generalizes the Gaussian probability distribution. The new approach is to adopt the idea of the GP prediction technique which utilizes the covariance kernel functions and use it to interpolate and/or reconstruct highorder approximations for computational fluid dynamics simulations. The new GP highorder method is proposed as a new numerical highorder formulation in finite difference and finite volume frameworks, alternative to the conventional polynomialbased approaches.

15404

Monday 9/17 1:00 PM

Joshua Ruiter, MSU

Absolute Values and Ostrowski's Theorem
 Joshua Ruiter, MSU
 Absolute Values and Ostrowski's Theorem
 09/17/2018
 1:00 PM  1:50 PM
 C517 Wells Hall
The notion of an absolute value function can be generalized to arbitrary fields; one example is the padic absolute value on the rational. Ostrowski's theorem classifies all absolute values on the rationals. An absolute value induces a metric in a natural way, so we can "complete" a field with respect to a given absolute value. We'll also discuss the close relationship between absolute values and discrete valuation rings.

14371

Monday 9/17 4:10 PM

Selman Akbulut, MSU

Where do SeibergWitten equations come from?
 Selman Akbulut, MSU
 Where do SeibergWitten equations come from?
 09/17/2018
 4:10 PM  5:30 PM
 C304 Wells Hall
The question in title is akin to asking where the equation of motion of a free falling object a + bt + 1/2 gt^2 in 3space come from? then discovering that the "objects fall with constant acceleration" rule. Similarly, we derive SeibergWitten equations (which also have a linear part and a quadratic part) from the deformation equations of an "isotropic associative submanifold" of a complex G_2 Manifold. For this, we will define the notion of complex G_2 manifold and notion of complexification of a G_2 manifold (this is a joint work with Ustun Yildirim).

15402

Monday 9/17 4:10 PM

Andrew Krause; David Bramer

MTH 124  Inclusivity Enhancements
 Andrew Krause; David Bramer
 MTH 124  Inclusivity Enhancements
 09/17/2018
 4:10 PM  5:00 PM
 C109 Wells Hall
No abstract available.

15407

Wednesday 9/19 4:00 PM

Zhe Zhang (Alan)

Elliptic Regularity of JHolomorphic Curves
 Zhe Zhang (Alan)
 Elliptic Regularity of JHolomorphic Curves
 09/19/2018
 4:00 PM  4:50 PM
 A202 Wells Hall
One of the fundamental estimates for the L^p theory of elliptic operators is CalderonZygmund inequality. I’ll follow Mcduff & Salamon’s book for the proof of regularity theorem, raising the order of nonlinear Cauchy Riemann equation and making use of mean value property.

14348

Wednesday 9/19 4:10 PM

Richard Kollar, Comenius University, Bratislava, Slovakia

Krein signature  three unexpected lessons
 Richard Kollar, Comenius University, Bratislava, Slovakia
 Krein signature  three unexpected lessons
 09/19/2018
 4:10 PM  5:00 PM
 C517 Wells Hall
Krein signature is an algebraic quantity characterizing purely imaginary eigenvalues of linearized Hamiltonian systems. Instabilities growing from a stable state in these systems are caused by HamiltonianHopf bifurcations, i.e. events when two purely imaginary eigenvalues collide and split off the imaginary axis. The necessary condition for such an event is that the colliding eigenvalues must have mixed signature. In the talk we present three elegant results related to Krein signature  graphical Krein signature and its use to simplify proofs, a connection to stability in general extended systems, and ability to characterize the nature of the eigenvalue collisions directly from the reduced dispersion relation.

15418

Thursday 9/20 3:00 PM

Matthew Mills, MSU

Green sequences and localacyclicity.
 Matthew Mills, MSU
 Green sequences and localacyclicity.
 09/20/2018
 3:00 PM  4:00 PM
 C117 Wells Hall
In 2014 it was conjectured that the equality of the cluster algebra and upper cluster algebra is equivalent to the existence of a maximal green sequence. In this talk we will discuss a stronger result for cluster algebras from mutationfinite quivers with an emphasis on surface cluster algebras. Specifically we show that for all quivers from surface cluster algebras there exists a maximal green sequence if and only if the cluster algebra is equal to the cluster algebra if and only if the cluster algebra is locallyacyclic. We will also provide a counterexample to show that the result does not hold in general.

15378

Thursday 9/20 4:10 PM

Brendon Rhoades, University of California, San Diego

The combinatorics, algebra, and geometry of ordered set partitions
 Brendon Rhoades, University of California, San Diego
 The combinatorics, algebra, and geometry of ordered set partitions
 09/20/2018
 4:10 PM  5:00 PM
 C304 Wells Hall
An {\em ordered set partition} of size $n$ is a set partition of $\{1, 2, \dots, n \}$ with a specified order on its blocks. When the number of blocks equals the number of letters $n$, an ordered set partition is just a permutation in the symmetric group $S_n$. We will discuss some combinatorial, algebraic, and geometric aspects of permutations (due to MacMahon, Carlitz, Chevalley, Steinberg, Artin, LusztigStanley, Ehresmann, Borel, and LascouxSch\"utzenberger). We will then describe how these results generalize to ordered set partitions and discuss a connection with the HaglundRemmelWilson {\em Delta Conjecture} in the field of Macdonald polynomials. Joint with Jim Haglund, Brendan Pawlowski, and Mark Shimozono.

15421

Friday 9/21 4:10 PM

Jeff Schenker

NSF Fellowship Info Session
 Jeff Schenker
 NSF Fellowship Info Session
 09/21/2018
 4:10 PM  5:00 PM
 C304 Wells Hall
No abstract available.

15422

Monday 9/24 1:00 PM


NSA Info Session

 NSA Info Session
 09/24/2018
 1:00 PM  2:00 PM
 C304 Wells Hall
The SPORT program at the National Security Agency (NSA) offers graduate students the opportunity to apply their academic knowledge in a stimulating professional environment. As a SPORT intern you will work closely with full time Operations Research analysts applying academic and technical skills to challenging, realworld problems. Internships are paid and are 12 weeks in duration (MayAugust). Applications accepted September 1st through October 31st

15425

Monday 9/24 1:00 PM

Chuangtian Guan, MSU

Witt Schemes and Witt Vectors
 Chuangtian Guan, MSU
 Witt Schemes and Witt Vectors
 09/24/2018
 1:00 PM  1:50 PM
 C517 Wells Hall
No abstract available.

15408

Wednesday 9/26 4:00 PM

Nick Ovenhouse

Noncommutative Geometry and Character Varieties
 Nick Ovenhouse
 Noncommutative Geometry and Character Varieties
 09/26/2018
 4:00 PM  5:00 PM
 A202 Wells Hall
Roughly speaking, noncommutative geometry studies noncommutative rings and algebras from a "geometric" perspective. I will discuss some philosophies and approaches to the subject, which leads to the study of character varieties, which I will define and discuss.

15428

Thursday 9/27 1:00 PM

Wenchuan Tian, MSU

Newton's method and periodic solutions of nonlinear wave equations
 Wenchuan Tian, MSU
 Newton's method and periodic solutions of nonlinear wave equations
 09/27/2018
 1:00 PM  2:00 PM
 C304 Wells Hall
We will cover pages 12  23 of the paper by Walter Craig and C.E. Wayne of the same title. These pages cover section 2.4 until the end of the proof of Lemma 3.3.

15396

Thursday 9/27 2:00 PM

Giuseppe Martone, University of Michigan

Hitchin representations and positive configurations of apartments
 Giuseppe Martone, University of Michigan
 Hitchin representations and positive configurations of apartments
 09/27/2018
 2:00 PM  3:00 PM
 C304 Wells Hall
Hitchin singled out a preferred component in the character variety of representations from the fundamental group of a surface to PSL(d,R). When d=2, this Hitchin component coincides with the Teichm\"uller space consisting of all hyperbolic metrics on the surface. Later Labourie showed that Hitchin representations share many important differential geometric and dynamical properties.
Parreau extended previous work of Thurston and MorganShalen to a compactification of the Hitchin component whose boundary points are described by actions of the fundamental group of the surface on a building.
In this talk, we offer a new point of view for the Parreau compactification, which is based on certain positivity properties discovered by Fock and Goncharov. Specifically, we use the FockGoncharov construction to describe the intersection patterns of apartments in invariant subsets of the building that arises in the boundary of the Hitchin component.

15398

Thursday 9/27 3:00 PM


Joint meeting with Notre Dame: open problem session

 Joint meeting with Notre Dame: open problem session
 09/27/2018
 3:00 PM  4:00 PM
 C304 Wells Hall
Abstract: we will discuss open problems in Cluster Algebras theory

15381

Thursday 9/27 4:10 PM

Igor Dolgachev, University of Michigan

The reflection group of a regular tetrahedron
 Igor Dolgachev, University of Michigan
 The reflection group of a regular tetrahedron
 09/27/2018
 4:10 PM  5:00 PM
 C304 Wells Hall
I will explain how the group of affine orthogonal transformations generated by the reflections into the four facets of a regular tetrahedron and its symmetries appears as a discrete group of motions of the 9dimensional hyperbolic space, as the full group of automorphisms of some algebraic surfaces and as a lattice in a projective linear group over the 3adic numbers.

15424

Monday 10/1 4:10 PM

Kursat Sozer, IU

Extended HQFTs in dimension 2
 Kursat Sozer, IU
 Extended HQFTs in dimension 2
 10/01/2018
 4:10 PM  5:30 PM
 C304 Wells Hall
Topological quantum field theories (TQFTs), inspired by theoretical physics, produce manifold invariants behaving well under gluing. For every discrete group G, homotopy quantum field theories (HQFTs) are Gequivariant versions of TQFTs. In this talk we define and classify 2dimensional extended HQFTs by generalizing methods introduced for TQFTs by Chris SchommerPries in 2009. We list generators and relations for the extended Gequivariant bordism bicategory and use them to classify 2dimensional extended HQFTs.

15427

Wednesday 10/3 12:00 PM

Dr. Kaitlin Torphy, MSU

Educational Professionalism within the Fifth Estate: Networks of Influence Within Social Media and Education
 Dr. Kaitlin Torphy, MSU
 Educational Professionalism within the Fifth Estate: Networks of Influence Within Social Media and Education
 10/03/2018
 12:00 PM  1:00 PM
 B310 Wells Hall
Dr. Kaitlin Torphy will speak about an emergent phenomenon, social media in education. She will present the notion of a Fifth Estate within the digital age, redefining network influence (Dutton, 2009). Dr. Torphy will review research regarding teachers’ engagement within Pinterest, a prevalent social media platform amongst teachers nationwide. In related work, she will explore how teachers are turning to social media (Pinterest) to connect with instructional resources and one another as they work to support the academic needs of their students and respond to education reforms. Dr. Torphy will provide a first look at characterizing the quality and standards alignment of over 5000 mathematics tasks within Pinterest. For more information on the work or the Teachers in Social Media project, visit www.TeachersInSocialMedia.org.

15437

Wednesday 10/3 2:00 PM

Alex Waldron, MSU

Introduction to the harmonic map problem
 Alex Waldron, MSU
 Introduction to the harmonic map problem
 10/03/2018
 2:00 PM  3:00 PM
 C304 Wells Hall
First in a series of talks covering existence and regularity results for harmonic maps between manifolds. (Reference: Lin and Wang's book.)

15426

Wednesday 10/3 4:10 PM

Keshav Sutrave

Take a walk on a Riemann surface
 Keshav Sutrave
 Take a walk on a Riemann surface
 10/03/2018
 4:10 PM  5:00 PM
 A202 Wells Hall
This talk will be an introduction to Riemann surfaces, including branched covering and monodromy in this setting. I will prove Riemann's existence theorem of branched covers, illustrate this using algebraic curves, and finish with RiemannHurwitz.

15389

Wednesday 10/3 4:10 PM

N. K. Nikolski, University of Bordeaux

V.Ya.Kozlov's completeness problem
 N. K. Nikolski, University of Bordeaux
 V.Ya.Kozlov's completeness problem
 10/03/2018
 4:10 PM  5:00 PM
 C517 Wells Hall
In 19481950, V.Ya.Kozlov (19142007) stated a series of
interesting geometric properties of dilated systems D(f)= {f(kx): k=
1,2,...} in the spaces L^p(0,1). Since that, no proofs were published.
In particular, for a RademacherHaarWalsh type generator f=
2periodic odd extension of the indicator function of (0,a), 0<a<1,
the system D(f) was claimed to be complete/incomplete for many
particular values of a. We prove all Kozlov's statements and several
new, as well as discuss other geometric properties of D(f).

15419

Thursday 10/4 11:00 AM

Ramis Movassagh, IBM

Unitary paths and quantum computational supremacy: A proof of averagecase hardness of Random Circuit Sampling
 Ramis Movassagh, IBM
 Unitary paths and quantum computational supremacy: A proof of averagecase hardness of Random Circuit Sampling
 10/04/2018
 11:00 AM  12:00 PM
 C304 Wells Hall
Demonstration of computational advantages of Noisy IntermediateScale Quantum (NISQ) computers over classical computers is an imperative nearterm goal, especially with the exuberant experimental frontier in academia and industry. Because of a large industrial push (e.g., from IBM and Google), NISQ computers with hundred(s) of qubits are at the brink of existence with the promise of outperforming any classical computer.
A goalpost is to demonstrate the so called {\it quantum computational supremacy}, which is to show that a NISQ computer can perform a computational task that is tremendously difficult for any classical (super)computer. The foremost candidate problem to show quantum supremacy is Random Circuit Sampling (RCS), which is the task of sampling from the output distribution of a random circuit. For example, this is Google's primary current objective, whose delivery is promised within the next few months.
In this work, we first develop a mathematical framework for and prove various useful facts applicable to random circuits such as construction of rational function valued unitary paths that interpolate between two arbitrary unitaries, an extension of BerlekampWelch algorithm that efficiently and exactly interpolates rational functions, and construction of probability distributions over unitaries that are arbitrarily close to the Haar measure. Lastly, we then prove that the exact sampling from the output distribution of random circuits is $\#P$Hard on {\it average}; we also prove that this is necessary for proving the quantum supremacy conjecture.

14370

Thursday 10/4 2:00 PM

Artem Kotelskiy, Indiana University

Khovanov homology and BarNatan's deformation via immersed curves in the 4punctured sphere.
 Artem Kotelskiy, Indiana University
 Khovanov homology and BarNatan's deformation via immersed curves in the 4punctured sphere.
 10/04/2018
 2:00 PM  2:50 PM
 C304 Wells Hall
We will describe a geometric interpretation of Khovanov homology and its deformation due to BarNatan as Lagrangian Floer homology of two immersed curves in the 4punctured 2sphere S^2 \ 4pt. We will first start with a certain cobordism theoretic algebra H, where elements are all cobordisms between two trivial tangles )( and = up to certain relations. The central point then will be the observation that this algebra is isomorphic to an algebra B = Fuk(a0, a1), whose elements are generators of wrapped Lagrangian Floer complexes between two arcs a0 and a1 inside S^2 \ 4pt. The results will follow because D structures over H give Khovanov/BarNatan invariants for 4ended tangles, and D structures over B give curves in S^2 \ 4pt (due to [Haiden, Katzarkov, Kontsevich]).
The construction is originally inspired by a result of [Hedden, Herald, Hogancamp, Kirk], which embeds 4ended reduced Khovanov arc algebra (or, equivalently, BarNatan dotted cobordism algebra) into the Fukaya category of the 4punctured sphere. This is joint work with Liam Watson and Claudius Zibrowius.

15430

Thursday 10/4 3:00 PM

Dylan Rupel, MSU

Cell Decompositions for Rank Two Quiver Grassmannians
 Dylan Rupel, MSU
 Cell Decompositions for Rank Two Quiver Grassmannians
 10/04/2018
 3:00 PM  4:00 PM
 C117 Wells Hall
A quiver Grassmannian is a variety parametrizing subrepresentations of a given quiver representation. Reineke has shown that all projective varieties can be realized as quiver Grassmannians. In this talk, I will study a class of smooth projective varieties arising as quiver Grassmannians for (truncated) preprojective representations of an nKronecker quiver, i.e. a quiver with two vertices and n parallel arrows between them. The main result I will present is a recursive construction of cell decompositions for these quiver Grassmannians. If there is time I will discuss a combinatorial labeling of the cells by which their dimensions may conjecturally be directly computed. This is a report on joint work with Thorsten Weist.

15420

Thursday 10/4 4:10 PM

Yang Yang, Michigan State University

Some inverse source and coefficient problems for the wave operators (special colloquium)
 Yang Yang, Michigan State University
 Some inverse source and coefficient problems for the wave operators (special colloquium)
 10/04/2018
 4:10 PM  5:00 PM
 C304 Wells Hall
Inverse problems seek to infer causal factor from the resulting observation, and waves are among the most prevalent and significant observations in nature. In this talk, we will discuss two inverse problems for the acoustic wave equation and its generalizations. The first is an inverse source problem where one attempts to determine an instantaneous source from the boundary Dirichlet data. We give sharp conditions on unique and stable determination, and derive an explicit reconstruction formula for the source. The second is an inverse coefficient problem on a cylinderlike Lorentzian manifold (M,g) for the Lorentzian wave operator perturbed by a vector field A and a function q. We show that local knowledge of the DirichlettoNeumann map (DNmap) stably determines the jets of (g,A,q) up to gauge transformations, and global knowledge of the DNmap stably determines the lens relation of g as well as the light ray transforms of A and q. This is based on joint work with P. Stefanov.

15432

Friday 10/5 4:10 PM

Igor Rapinchuk

On the infinitude of primes
 Igor Rapinchuk
 On the infinitude of primes
 10/05/2018
 4:10 PM  5:00 PM
 C304 Wells Hall
Prime numbers are the building blocks of arithmetic. Starting with Euclid's classical proof that there are infinitely many primes, I will discuss various approaches to thinking about the infinitude of primes, culminating with Dirichlet's theorem on primes in arithmetic progression.

15441

Monday 10/8 1:00 PM

Charlotte Ure, MSU

Étale Cohomology and its Applications to Curves
 Charlotte Ure, MSU
 Étale Cohomology and its Applications to Curves
 10/08/2018
 1:00 PM  1:50 PM
 C517 Wells Hall
Étale cohomology was originally introduced by Grothendieck in the 1960s as a tool for solving the Weil conjectures. Since then it has proven very useful in algebraic and arithmetic geometry. In my talk, I will introduce the notion of Grothendieck topology, étale site, and étale cohomology. I will then explore the cohomology of curves and briefly describe some applications. This talk will be accessible to all levels.

15433

Monday 10/8 4:10 PM

Rachael Lund and Tsveta Sendova

MTH 101 updates and ULA coordination
 Rachael Lund and Tsveta Sendova
 MTH 101 updates and ULA coordination
 10/08/2018
 4:10 PM  5:00 PM
 C109 Wells Hall
We are going to discuss changes to the MTH 101 curriculum, ideas about some changes to the structure going forward.

15405

Monday 10/8 4:10 PM

Selman Akbulut, MSU

A simple family of infinitely many absolutely exotic manifolds
 Selman Akbulut, MSU
 A simple family of infinitely many absolutely exotic manifolds
 10/08/2018
 4:10 PM  5:30 PM
 C304 Wells Hall
I wıll demonstrate a smooth 4manifold M, obtained by attaching a 2handle to B^4 along a certain knot K in S^3, which admits infinitely many absolutely exotic copies M_n, n=0,1,2.., such that each copy M_n is obtained by attaching 2handle to a fixed compact smooth contractible manifold W along its boundary Y, along the iterates f^{n}(c) of a knot c in Y by a diffeomorphism f: Y> Y. This generalizes the example I gave in “An exotic 4manifold, Jour. of Diff. Geom. 33, (1991)” which corresponds to the n=1 case.

15439

Wednesday 10/10 2:00 PM

Gorapada Bera

Morrey's theorem
 Gorapada Bera
 Morrey's theorem
 10/10/2018
 2:00 PM  3:15 PM
 C304 Wells Hall
Regularity of minimizing harmonic maps in dimension 2.

15409

Wednesday 10/10 4:10 PM

Sanjay Kumar

TuraevViro invariants via quantum representations of the mapping class group
 Sanjay Kumar
 TuraevViro invariants via quantum representations of the mapping class group
 10/10/2018
 4:10 PM  5:00 PM
 A202 Wells Hall
The TuraevViro invariants are an infinite family of real valued 3manifold invariants originally defined by state sums of a triangulation. Using SO(3)TQFT, I will demonstrate an equivalent formulation in terms of traces of quantum representations and discuss its possible advantages in studying mapping tori of surfaces.

15390

Wednesday 10/10 4:10 PM

N. K. Nikolski, University of Bordeaux

Dilated systems and multivariable analysis
 N. K. Nikolski, University of Bordeaux
 Dilated systems and multivariable analysis
 10/10/2018
 4:10 PM  5:00 PM
 C517 Wells Hall
Geometric L^2(0,1) properties of dilated function systems D(f)= {f(kx): k= 1,2,...} are discussed, as completeness, Riesz basis property, etc. (Completeness of D(f) for f(x)= 1/x[1/x] is equivalent to the Riemann Hypothesis). The Bohr's lift techniques permit to explain (all) known results and show some new, as well as to discuss open problems.

15436

Thursday 10/11 11:00 AM

Vitali Vougalter, U Toronto

Existence in the sense of sequences of stationary solutions for some nonFredholm integrodifferential equations
 Vitali Vougalter, U Toronto
 Existence in the sense of sequences of stationary solutions for some nonFredholm integrodifferential equations
 10/11/2018
 11:00 AM  12:00 PM
 C304 Wells Hall
We establish the existence in the sense of sequences of
stationary solutions for some reactiondiffusion type equations in
appropriate
H^2 spaces. It is shown that, under reasonable technical conditions, the
convergence in L^1 of the integral kernels implies the existence and
convergence in H^2 of solutions. The nonlocal elliptic equations involve
second order differential operators with and without the Fredholm property.

15379

Thursday 10/11 2:00 PM

Matthew Stoffregen, MIT

An infiniterank summand of the homology cobordism group
 Matthew Stoffregen, MIT
 An infiniterank summand of the homology cobordism group
 10/11/2018
 2:00 PM  3:00 PM
 C304 Wells Hall
This talk explains a generalization of the techniques that Hom introduced to construct an infiniterank summand of the topologically slice knot concordance group. We generalize Hom's epsiloninvariant to the involutive Heegaard Floer homology constructed by HendricksManolescu. As an application, we see that there is an infiniterank summand of the homology cobordism group, generated by Seifert spaces. The talk will contain a review of involutive Floer homology. This is joint work with Irving Dai, Jen Hom, and Linh Truong.

15431

Thursday 10/11 3:00 PM

Nick Ovenhouse, MSU

Introduction to Scattering Diagrams
 Nick Ovenhouse, MSU
 Introduction to Scattering Diagrams
 10/11/2018
 3:00 PM  4:00 PM
 C117 Wells Hall
I will give basic definitions of scattering diagrams and wallcrossing automorphims, and finish by showing some examples related to rank2 cluster algebras.

15440

Thursday 10/11 3:00 PM

SungSoo Byun, Seoul National University

Annulus SLE partition functions and martingaleobservables
 SungSoo Byun, Seoul National University
 Annulus SLE partition functions and martingaleobservables
 10/11/2018
 3:00 PM  3:50 PM
 C405 Wells Hall
In this talk, I will introduce a version of conformal ﬁeld theory (CFT) and explain its implementations to SLE theory in a doubly connected domain. The basic fields in these implementations are oneparameter family of Gaussian free fields whose boundary conditions are given by a weighted combination of Dirichlet boundary condition and excursionreflected one. After explaining basic notions in CFT such as OPE families of central charge modiﬁcations of the Gaussian free ﬁeld and presenting certain equations including a version of EguchiOoguri and Ward’s equations, I will outline the relation between CFT and SLE theory. As an application, I will explain how to apply the method of screening to find Euler integral type solutions to the parabolic partial differential equations for the annulus SLE partition functions introduced by Zhan and present a class of SLE martingaleobservables associated with these solutions.
This is based on joint work with NamGyu Kang and HeeJoon Tak.

14349

Thursday 10/11 4:10 PM

Deanna Needell, University of California, Los Angeles

Simple Classification from Binary Data
 Deanna Needell, University of California, Los Angeles
 Simple Classification from Binary Data
 10/11/2018
 4:10 PM  5:00 PM
 C304 Wells Hall
Binary, or onebit, representations of data arise naturally in many applications, and are appealing in both hardware implementations and algorithm design. In this talk, we provide a brief background to sparsity and 1bit measurements, and then present new results on the problem of data classification from binary data that proposes a framework with low computation and resource costs. We illustrate the utility of the proposed approach through stylized and realistic numerical experiments, provide a theoretical analysis for a simple case, and discuss future directions.

15447

Monday 10/15 4:10 PM

Michael Brown, MSU

Math Courses for Education Majors: Philosophies and Experiences
 Michael Brown, MSU
 Math Courses for Education Majors: Philosophies and Experiences
 10/15/2018
 4:10 PM  5:00 PM
 C109 Wells Hall
No abstract available.

16444

Wednesday 10/17 2:00 PM

Woong Bae Park, MSU

Regularity of minimizing harmonic maps in general dimensions
 Woong Bae Park, MSU
 Regularity of minimizing harmonic maps in general dimensions
 10/17/2018
 2:00 PM  3:30 PM
 C304 Wells Hall
First talk on SchoenUhlenbeck partial regularity theorem for minimizing harmonic maps.

15410

Wednesday 10/17 4:10 PM

Michael Shultz

The homology polynomial and pseudoAnosov braids
 Michael Shultz
 The homology polynomial and pseudoAnosov braids
 10/17/2018
 4:10 PM  5:00 PM
 A202 Wells Hall
Every orientation preserving homeomorphism of a compact, connected, orientable surface S is isotopic to a representative that is periodic, reducible, or pseudoAnosov (pA). In the last case, the representative is neither periodic nor reducible and the surface admits two (singular) transverse measured foliations. The pA representative "stretches" with respect to one of these measures by a number called the stretch factor.
The homology polynomial, introduced by Birman, Brinkmann, and Kawamuro, is an invariant of the isotopy class and contains the stretch factor as it's largest real root. It can also distinguish some distinct pA maps with the same stretch factor. In this talk I will discuss the ideas behind the homology polynomial and how it is obtained. As time permits I will discuss some examples involving pA braids and touch on a connection with the Burau representation.

15434

Thursday 10/18 2:00 PM

Siddhi Krishna, Boston College

Taut Foliations, Positive 3Braids, and the LSpace Conjecture
 Siddhi Krishna, Boston College
 Taut Foliations, Positive 3Braids, and the LSpace Conjecture
 10/18/2018
 2:00 PM  3:00 PM
 C304 Wells Hall
The LSpace Conjecture is taking the lowdimensional topology community by storm. It aims to relate seemingly distinct Floer homological, algebraic, and geometric properties of a closed 3manifold Y. In particular, it predicts a 3manifold Y isn't "simple" from the perspective of HeegaardFloer homology if and only if Y admits a taut foliation. The reverse implication was proved by Ozsvath and Szabo. In this talk, we'll present a new theorem supporting the forward implication. Namely, we'll use branched surfaces to build taut foliations for manifolds obtained by surgery on positive 3braid closures. As an example, we'll construct taut foliations in every nonLspace obtained by surgery along the P(2,3,7) pretzel knot. No background in HeegaardFloer or foliation theories will be assumed.

15435

Thursday 10/18 2:30 PM

Dr. Kyeong Hah Roh, Arizona State University

On the Teaching and Learning of Logic in Mathematical Contents
 Dr. Kyeong Hah Roh, Arizona State University
 On the Teaching and Learning of Logic in Mathematical Contents
 10/18/2018
 2:30 PM  4:00 PM
 252 EH
Logical thinking plays a crucial role in generating valid arguments from the given information as well as in evaluating the validity of others’ arguments in workplaces. Training our students as logical thinkers has been a central component in mathematics education. By engaging in proving and validating activities in undergraduate mathematics, students are expected to enhance logical thinking and make sound decisions by deducing valid inferences from a tremendous amount of information and resources in their future workplaces. Many universities in the United States thus offer introductory proof courses, or so called transitiontoproof courses, to introduce logic and various proof structures for valid arguments in mathematical contents. This presentation will provide an overview of the empirical studies that I have been involved in relation to undergraduate students’ logic and logical thinking, instructional interventions that I have designed to enhance students’ logical thinking in mathematical contents, and some issues and challenges in the introductory proof courses in mathematics.

16446

Thursday 10/18 3:00 PM

Erkan Nane, Auburn University

Blowup Results for Spacetime Fractional Dynamics
 Erkan Nane, Auburn University
 Blowup Results for Spacetime Fractional Dynamics
 10/18/2018
 3:00 PM  3:50 PM
 C405 Wells Hall
Linked Abstract
ABSTRACT. Consider nonlinear timefractional stochastic reactiondiffusion equations of the following type,
$$
\partial^\beta_tu_t(x)=\nu(\Delta)^{\alpha/2} u_t(x)+I^{1\beta}_t[b(u)+ \sigma(u)\stackrel{\cdot}{F}(t,x)]
$$
in $(d+1)$ dimensions, where $\nu>0, \beta\in (0,1)$, $\alpha\in (0,2]$. The operator $\partial^\beta_t$ is the Caputo fractional derivative while $(\Delta)^{\alpha/2} $ is the generator of an isotropic $\alpha$stable L\'evy process and $I^{1\beta}_t$ is the Riesz fractional integral operator. The forcing noise denoted by $\stackrel{\cdot}{F}(t,x)$ is a Gaussian noise. These equations might be used as a model for materials with random thermal memory. We derive nonexistence (blowup) of global random field solutions under some additional conditions, most notably on $b$, $\sigma$ and the initial condition. Our results complement those of P. Chow in ``P.L. Chow. Unbounded positive solutions of nonlinear parabolic It$\hat{o}$ equations. Commun. Stoch. Anal., 3(2)(2009), 211222.'' and ``P.L. Chow. Explosive solutions of stochastic reactiondiffusion equations in mean $l_{p}$norm. J. Differential Equations, 250(5) (2011), 25672580.'' and Foondun and Parshad ``M. Foondun and R. Parshad, On nonexistence of global solutions to a class of stochastic heat equations. Proc. Amer. Math. Soc. 143 (2015), no. 9, 40854094'', among others. The results presented are our recent joint work with Sunday Asogwa, Mohammud Foondun, Wei Liu, and Jebessa Mijena.

16443

Thursday 10/18 3:00 PM

Dylan Rupel, MSU

Cluster Monomials and Theta Bases via Scattering Diagrams
 Dylan Rupel, MSU
 Cluster Monomials and Theta Bases via Scattering Diagrams
 10/18/2018
 3:00 PM  4:00 PM
 C117 Wells Hall
In this talk I will add to Nick’s presentation from last time by describing a portion of the scattering diagram using cvectors and gvectors. Then I will present some examples of computing cluster monomials using broken lines. If there is time I will compute an element of the theta basis which is not a cluster monomial.

16445

Thursday 10/18 3:10 PM

Min Hoon Kim, KIAS

A family of freely slice good boundary links
 Min Hoon Kim, KIAS
 A family of freely slice good boundary links
 10/18/2018
 3:10 PM  4:00 PM
 C304 Wells Hall
The still open topological surgery conjecture for 4manifolds is equivalent to the statement that all good boundary links are freely slice. In this talk, I will show that every good boundary link with a pair of derivative links on a Seifert surface satisfying a homotopically trivial plus assumption is freely slice. This subsumes all previously known methods for freely slicing good boundary links with two or more components, and provides new freely slice links. This is joint work with Jae Choon Cha and Mark Powell.

14361

Thursday 10/18 4:10 PM

Frank Morgan, Williams College

Double Soap Bubbles and Densities
 Frank Morgan, Williams College
 Double Soap Bubbles and Densities
 10/18/2018
 4:10 PM  5:00 PM
 C304 Wells Hall
The familiar double soap bubble is the leastarea way to enclose and separate two given volumes in Euclidean space. What if you give space a density, such as r^2 or e^r^2 or e^r^2? The talk will include recent results and open questions. Students welcome.

15445

Friday 10/19 4:10 PM

Paul Bendich, Duke University and Geometric Data Analytics

Topology and Geometry for Tracking and Sensor Fusion
 Paul Bendich, Duke University and Geometric Data Analytics
 Topology and Geometry for Tracking and Sensor Fusion
 10/19/2018
 4:10 PM  5:00 PM
 C304 Wells Hall
Many systems employ sensors to interpret the environment. The targettracking task is to gather sensor data from the environment and then to partition these data into tracks that are produced by the same target. The goal of sensor fusion is to gather data from a heterogeneous collection of sensors (e.g, audio and video) and fuse them together in a way that enriches the performance of the sensor network at some task of interest.
This talk summarizes two recent efforts that incorporate mildly sophisticated mathematics into the general sensor arena.
First, a key problem in tracking is to 'connect the dots:' more precisely, to take a piece of sensor data at a given time and associate it with a previouslyexisting track (or to declare that this is a new object). We use topological data analysis (TDA) to form dataassociation likelihood scores, and integrate these scores into a wellrespected algorithm called Multiple Hypothesis Tracking. Tests on simulated data show that the TDA adds significant value over baseline, especially in the context of noisy sensor data.
Second, we propose a very general and entirely unsupervised sensor fusion pipeline that uses recent techniques from diffusion geometry and wavelet theory to fuse time series of arbitrary dimension arising from disparate sensor modalities. The goal of the pipeline is to differentiate classes of timeordered behavior sequences, and we demonstrate its performance on a wellstudied digit sequence database.
This talk represents joint work with many people. including Chris Tralie, Nathan Borggren, Sang Chin, Jesse Clarke, Jonathan deSena, John Harer, Jay Hineman, Elizabeth Munch, Andrew Newman, Alex Pieloch, David Porter, David Rouse, Nate Strawn, Adam Watkins, Michael Williams, and Peter Zulch.

16442

Friday 10/19 4:10 PM

Frank Morgan, Williams College

Distinguished Undergraduate Lecture: Optimal Tiles
 Frank Morgan, Williams College
 Distinguished Undergraduate Lecture: Optimal Tiles
 10/19/2018
 4:10 PM  5:00 PM
 B122 Wells Hall
A regular hexagon is the leastperimeter unitarea tile of the Euclidean plane. What is the best pentagonal tile? What about the hyperbolic plane? What about higher dimensions? The talk will include open questions and recent results, some by undergraduates.

15444

Tuesday 10/23 4:00 PM

Ekaterina Rapinchuk

AWM Seminar  Applied Mathematics
 Ekaterina Rapinchuk
 AWM Seminar  Applied Mathematics
 10/23/2018
 4:00 PM  5:00 PM
 C304 Wells Hall
Dr. Ekaterina Rapinchuk will be giving a talk which will partially be accessible to undergraduates on applied mathematics.

16447

Wednesday 10/24 2:00 PM

Woong Bae Park

Compactness properties of harmonic maps
 Woong Bae Park
 Compactness properties of harmonic maps
 10/24/2018
 2:00 PM  4:00 PM
 C304 Wells Hall
No abstract available.

15411

Wednesday 10/24 4:10 PM

Woongbae Park

TBD
 Woongbae Park
 TBD
 10/24/2018
 4:10 PM  5:00 PM
 A202 Wells Hall
No abstract available.

15406

Wednesday 10/24 4:10 PM

Maxim Gilula, MSU

l^2 decoupling with vanishing curvature
 Maxim Gilula, MSU
 l^2 decoupling with vanishing curvature
 10/24/2018
 4:10 PM  5:00 PM
 C517 Wells Hall
I will discuss recent progress on decoupling for curves with vanishing curvature.

15386

Thursday 10/25 2:00 PM

William Worden, Rice University

Generic veering triangulations are not geometric
 William Worden, Rice University
 Generic veering triangulations are not geometric
 10/25/2018
 2:00 PM  3:00 PM
 C304 Wells Hall
Abstract: Every pseudoAnosov mapping class \phi deﬁnes an associated veering triangulation \tau_\phi of a punctured mapping torus. We show that generically, \tau_\phi is not geometric. Here, the word “generic” can be taken either with respect to random walks in mapping class groups or with respect to counting geodesics in moduli space. After describing how veering triangulations are obtained from pseudoAnosov maps, we will discuss some tools that go into the proof and give an outline if time permits.

15442

Thursday 10/25 3:00 PM


MSUND Summit @ ND

 MSUND Summit @ ND
 10/25/2018
 3:00 PM  5:00 PM

We will be heading to Notre Dame to discuss open problems in the field. We will meet in room Hurley 258.

16449

Friday 10/26 4:10 PM

Akil Narayan, University of Utah

Sampling techniques for building computational emulators and highdimensional approximation
 Akil Narayan, University of Utah
 Sampling techniques for building computational emulators and highdimensional approximation
 10/26/2018
 4:10 PM  5:00 PM
 1502 Engineering Building
We present an overview of techniques for building mathematical emulators of parametrized scientific models. We will primarily discuss forward emulation, where one seeks to predict the output of a model given a parametric input. We will emphasize methods that boast stability, accuracy, and computational efficiency. The focus will be on emulators built from nonadapted polynomials, and time permitting we will also explore adapted approximations and reduced order modeling. The talk will highlight some recent notable advances made in the field of building emulators from sample data, and will identify frontiers where mathematical or computational advances are needed.

15449

Tuesday 10/30 4:10 PM

Jane Zimmerman, MSU

MTH 103A: Experiences from the classroom and future directions
 Jane Zimmerman, MSU
 MTH 103A: Experiences from the classroom and future directions
 10/30/2018
 4:10 PM  5:00 PM
 C109 Wells Hall
No abstract available.

16448

Wednesday 10/31 2:00 PM

Alex Waldron

Epsilonregularity of harmonic maps
 Alex Waldron
 Epsilonregularity of harmonic maps
 10/31/2018
 2:00 PM  3:30 PM
 C304 Wells Hall
Proof of the key partial regularity theorem for minimizing (and stationary) harmonic maps, and bound on Hausdorff measure of the singular set.

15412

Wednesday 10/31 4:10 PM

Wenchuan Tian

TBD
 Wenchuan Tian
 TBD
 10/31/2018
 4:10 PM  5:00 PM
 A202 Wells Hall
No abstract available.

15391

Wednesday 10/31 4:10 PM

Irina Holmes, MSU and Texas A&M

Bellman and Bollobas Functions
 Irina Holmes, MSU and Texas A&M
 Bellman and Bollobas Functions
 10/31/2018
 4:10 PM  5:00 PM
 C517 Wells Hall
No abstract available.

15387

Thursday 11/1 2:00 PM

Yuanqi Wang

TBA
 Yuanqi Wang
 TBA
 11/01/2018
 2:00 PM  3:00 PM
 C304 Wells Hall
No abstract available.

15382

Thursday 11/1 4:10 PM

Rustum Choksi, McGill University

TBA
 Rustum Choksi, McGill University
 TBA
 11/01/2018
 4:10 PM  5:00 PM
 C304 Wells Hall
No abstract available.

15413

Wednesday 11/7 4:10 PM

Abhishek Mallick

TBD
 Abhishek Mallick
 TBD
 11/07/2018
 4:10 PM  5:00 PM
 A202 Wells Hall
No abstract available.

13346

Thursday 11/8 2:00 PM

Jonathan Campbell, Vanderbilt University

TBA
 Jonathan Campbell, Vanderbilt University
 TBA
 11/08/2018
 2:00 PM  3:00 PM
 C304 Wells Hall
No abstract available.

14362

Thursday 11/8 4:10 PM

Jared Speck

TBA
 Jared Speck
 TBA
 11/08/2018
 4:10 PM  5:00 PM
 C304 Wells Hall
No abstract available.

15448

Friday 11/9 4:10 PM

Wenrui Hao, Pennsylvania State University

Computational modeling for cardiovascular risk evaluation
 Wenrui Hao, Pennsylvania State University
 Computational modeling for cardiovascular risk evaluation
 11/09/2018
 4:10 PM  5:00 PM
 1502 Engineering Building
Atherosclerosis, the leading cause of death in the United State, is a disease in which a plaque builds up inside the arteries. The LDL and HDL concentrations in the blood are commonly used to predict the risk factor for plaque growth. In this talk, I will describe a recent mathematical model that predicts the plaque formation by using the combined levels of (LDL, HDL) in the blood. The model is given by a system of partial differential equations within the plaque with a free boundary. This model is used to explore some drugs of regression of a plaque in mice, and suggest that such drugs as used for mice may also slow plaque growth in humans. Some mathematical questions, inspired by this model, will also be discussed. I will also mention briefly some related projects about abdominal aortic aneurysm (AAA) and red blood cell aggregation, which would have some potential blood biomarkers for diagnosis of AAA.

15414

Wednesday 11/14 4:10 PM

Hitesh Gakhar

TBD
 Hitesh Gakhar
 TBD
 11/14/2018
 4:10 PM  5:00 PM
 A202 Wells Hall
No abstract available.

15392

Wednesday 11/14 4:10 PM

Dominique Maldague, UC Berkeley

TBA
 Dominique Maldague, UC Berkeley
 TBA
 11/14/2018
 4:10 PM  5:00 PM
 C517 Wells Hall
No abstract available.

14374

Thursday 11/15 2:00 PM

Ian Zemke, Princeton University

TBA
 Ian Zemke, Princeton University
 TBA
 11/15/2018
 2:00 PM  3:00 PM
 C304 Wells Hall
No abstract available.

15446

Friday 11/16 4:10 PM

Jun Song, University of Illinois at UrbanaChampaign

Spectral and Statistical Analyses of Nucleosome Positioning: New Answers to Old Questions
 Jun Song, University of Illinois at UrbanaChampaign
 Spectral and Statistical Analyses of Nucleosome Positioning: New Answers to Old Questions
 11/16/2018
 4:10 PM  5:00 PM
 C304 Wells Hall
Nucleosomes form the fundamental building blocks of eukaryotic
chromatin, and previous attempts to understand the principles
governing their genomewide distribution have spurred much interest
and debate in biology. In particular, the precise role of DNA sequence
in shaping local chromatin structure has been controversial.
In this talk, I will described categorical spectral analysis methods
and statistical physics approaches for rigorously quantifying the
contribution of hithertodebated sequence features to three
distinct aspects of genomewide nucleosome landscape: occupancy,
translational positioning, and rotational positioning.

15415

Wednesday 11/21 4:10 PM

Gorapada Bera

TBD
 Gorapada Bera
 TBD
 11/21/2018
 4:10 PM  5:00 PM
 A202 Wells Hall
No abstract available.

15416

Wednesday 11/28 4:10 PM

Brandon Bavier

TBD
 Brandon Bavier
 TBD
 11/28/2018
 4:10 PM  5:00 PM
 A202 Wells Hall
No abstract available.

15380

Thursday 11/29 2:00 PM

Dominic Culver, University of Illinois UrbanaChampaign

TBA
 Dominic Culver, University of Illinois UrbanaChampaign
 TBA
 11/29/2018
 2:00 PM  3:00 PM
 C304 Wells Hall
No abstract available.

15443

Friday 11/30 12:00 AM

Greg Muller, University of Oklahoma

TBA
 Greg Muller, University of Oklahoma
 TBA
 11/30/2018
 12:00 AM  12:00 AM
 C117 Wells Hall
No abstract available.

15417

Wednesday 12/5 4:10 PM

Zhe Zhang

TBD
 Zhe Zhang
 TBD
 12/05/2018
 4:10 PM  5:00 PM
 A202 Wells Hall
No abstract available.

15397

Thursday 12/6 2:00 PM

Lev TovstopyatNelip , Boston College

TBA
 Lev TovstopyatNelip , Boston College
 TBA
 12/06/2018
 2:00 PM  2:50 PM
 C304 Wells Hall
No abstract available.
