BEGIN:VCALENDAR
VERSION:2.0
PRODID:Mathematics Seminar Calendar
BEGIN:VEVENT
UID:20180117T201532-8242@math.msu.edu
DTSTAMP:20180117T201532Z
SUMMARY:Elliptic curves and p-adic L-functions
DESCRIPTION:Speaker\: David Hansen, Columbia University\r\nI'll explain the notion of a p-adic L-function, try to \r\nmotivate why one might care about such a gadget, and give some history of their construction and applications. At the end of the talk I'll discuss a recent joint work with John Bergdall in which (among other things) we construct canonical p-adic L-functions associated with modular elliptic curves over totally real number fields.
LOCATION:C304 Wells Hall
DTSTART:20180108T211000Z
DTEND:20180108T220000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=8242
END:VEVENT
BEGIN:VEVENT
UID:20180117T201532-8231@math.msu.edu
DTSTAMP:20180117T201532Z
SUMMARY:Uncertainty Quantification of Physics-constrained Problems – Data Assimilation and Parameter Estimation
DESCRIPTION:Speaker\: Yoonsang Lee, Lawrence Berkeley National Laboratory\r\nObservation data along with mathematical models play a crucial role in improving prediction skills in science and engineering. In this talk we focus on the recent development of uncertainty quantification methods, data assimilation and parameter estimation, for Physics-constrained problems that are often described by partial differential equations. We discuss the similarities shared by the two methods and their differences in mathematical and computational points of view and future research topics. As applications, numerical weather prediction for geophysical flows and parameter estimation of kinetic reaction rates in the hydrogen-oxygen combustion are provided.
LOCATION:C304 Wells Hall
DTSTART:20180109T211000Z
DTEND:20180109T220000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=8231
END:VEVENT
BEGIN:VEVENT
UID:20180117T201532-8230@math.msu.edu
DTSTAMP:20180117T201532Z
SUMMARY:Quantifying congruences between Eisenstein series and cusp forms
DESCRIPTION:Speaker\: Preston Wake, UCLA\r\nConsider the following two problems in algebraic number theory:\r\n\r\n1. For which prime numbers p can we easily show that the Fermat equation x^p + y^p =z^p has no non-trivial integer solutions? \r\n\r\n\r\n2. Given an elliptic curve E over the rational numbers, what can be said about the group of rational points of finite order on E?\r\n\r\nThese seem like very different problems, but, surprisingly, they share a common theme: they are both related to the existence of congruences between two types of modular forms, Eisenstein series and cusp forms. We will explain these examples, and discuss a new technique for giving quantitative information about these congruences (for example, counting the number of cusp forms congruent to an Eisenstein series). We will explain how this can give finer arithmetic information than simply knowing the existence of a congruence. This is joint work with Carl Wang-Erickson.
LOCATION:C304 Wells Hall
DTSTART:20180110T211000Z
DTEND:20180110T220000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=8230
END:VEVENT
BEGIN:VEVENT
UID:20180117T201532-8232@math.msu.edu
DTSTAMP:20180117T201532Z
SUMMARY:From Hilbert's Nullstellensatz to quotient categories
DESCRIPTION:Speaker\: John Calabrese, Rice University\r\nA common theme in algebraic geometry is the interplay between algebra and geometry. In this talk I will discuss a few "reconstruction theorems", in which the algebra determines the geometry.
LOCATION:C304 Wells Hall
DTSTART:20180112T211000Z
DTEND:20180112T220000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=8232
END:VEVENT
BEGIN:VEVENT
UID:20180117T201532-9248@math.msu.edu
DTSTAMP:20180117T201532Z
SUMMARY:Sasaki-Einstein metrics and K-stability
DESCRIPTION:Speaker\: Tristan Collins, Harvard University\r\nI will discuss the connection between Sasaki-Einstein metrics and algebraic geometry in the guise of K-stability. In particular, I will give a differential geometric perspective on K-stability which arises from the Sasakian view point, and use K-stability to find infinitely many non-isometric Sasaki-Einstein metrics on the 5-sphere. This is joint work with G. Szekelyhidi.
LOCATION:C304 Wells Hall
DTSTART:20180117T211000Z
DTEND:20180117T220000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=9248
END:VEVENT
BEGIN:VEVENT
UID:20180117T201532-9251@math.msu.edu
DTSTAMP:20180117T201532Z
SUMMARY: Dualities in Persistent (co)Homology
DESCRIPTION:Speaker\: Hitesh Gakhar, MSU\r\nFor a filtered topological space, its persistent homology is a multi-set of half open real intervals known as barcode. Each bar represents the lifespan of a homology class. A fundamental principle is that the length of such a bar determines the significance of the corresponding class. In 2011, V. de Silva et al studied the relationships between (persistent) absolute homology, absolute cohomology, relative homology and relative cohomology. This talk will be a theoretical overview of that study.
LOCATION:C204A Wells Hall
DTSTART:20180117T211000Z
DTEND:20180117T220000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=9251
END:VEVENT
BEGIN:VEVENT
UID:20180117T201532-9253@math.msu.edu
DTSTAMP:20180117T201532Z
SUMMARY:Infinite Galois Extensions
DESCRIPTION:Speaker\: Joshua Ruiter, MSU\r\n
LOCATION:C517 Wells Hall
DTSTART:20180122T211000Z
DTEND:20180122T220000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=9253
END:VEVENT
BEGIN:VEVENT
UID:20180117T201532-7200@math.msu.edu
DTSTAMP:20180117T201532Z
SUMMARY:Academic Integrity
DESCRIPTION:Speaker\: \r\nDr. Robert Caldwell, MSU's Ombudsperson, will attend this meeting. This will be an opportunity to ask him questions regarding challenging scenarios many of us have encountered during exam proctoring, grading of tests and projects.
LOCATION:C109 Wells Hall
DTSTART:20180122T211000Z
DTEND:20180122T220000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=7200
END:VEVENT
BEGIN:VEVENT
UID:20180117T201532-8235@math.msu.edu
DTSTAMP:20180117T201532Z
SUMMARY:Investigating Subtleties of the Multiplication Principle
DESCRIPTION:Speaker\: Elise Lockwood, Oregon State University\r\nCentral to introductory probability, and a primary feature of most discrete mathematics courses, the Multiplication Principle is fundamental to combinatorics, underpinning many standard formulas and providing justification for counting strategies. Given its importance, the ways it is presented in textbooks are surprisingly varied. In this talk, I identify key elements of the principle and present a categorization of statement types that emerged from a textbook analysis. I also incorporate excerpts from a reinvention study that sheds light on how students reason through key elements of the principle. Findings from both the textbook analysis and the reinvention study reveal surprisingly subtle aspects of the multiplication principle that can be made concrete for students through carefully chosen examples. I conclude with a number of potential mathematical and pedagogical implications of the categorization.
LOCATION:252 EH
DTSTART:20180123T181500Z
DTEND:20180123T194500Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=8235
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BEGIN:VEVENT
UID:20180117T201532-9249@math.msu.edu
DTSTAMP:20180117T201532Z
SUMMARY:An Introduction to Stanley's Theory of P-Partitions. I
DESCRIPTION:Speaker\: Bruce Sagan, MSU\r\nRichard Stanley developed a powerful generalization of the theory of integer partitions where the parts of the partition are arranged on any labeled poset P. In this first lecture we will develop some intuition by computing the generating functions for various families of ordinary integer partitions. This will motivate Stanley's generalization which will be discussed in the second lecture. No background will be assumed.
LOCATION:C304 Wells Hall
DTSTART:20180123T211000Z
DTEND:20180123T220000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=9249
END:VEVENT
BEGIN:VEVENT
UID:20180117T201532-7231@math.msu.edu
DTSTAMP:20180117T201532Z
SUMMARY:Probabilistic scattering for the 4D energy-critical defocusing nonlinear wave equation
DESCRIPTION:Speaker\: Jonas Lührmann\r\nWe consider the Cauchy problem for the energy-critical defocusing \r\nnonlinear wave equation in four space dimensions. It is known that for \r\ninitial data at energy regularity, the solutions exist globally in time \r\nand scatter to free waves. However, the problem is ill-posed for initial \r\ndata at super-critical regularity, i.e. for regularities below the \r\nenergy regularity.\r\nIn this talk we study the super-critical data regime for this Cauchy \r\nproblem from a probabilistic point of view, using a randomization \r\nprocedure that is based on a unit-scale decomposition of frequency \r\nspace. We will present an almost sure global existence and scattering \r\nresult for randomized radially symmetric initial data of super-critical \r\nregularity. This is the first almost sure scattering result for an \r\nenergy-critical dispersive or hyperbolic equation for scaling \r\nsuper-critical initial data.\r\nThe main novelties of our proof are the introduction of an approximate \r\nMorawetz estimate to the random data setting and new large deviation \r\nestimates for the free wave evolution of randomized radially symmetric data.\r\n\r\nThis is joint work with Ben Dodson and Dana Mendelson.
LOCATION:C304 Wells Hall
DTSTART:20180125T160000Z
DTEND:20180125T170000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=7231
END:VEVENT
BEGIN:VEVENT
UID:20180117T201532-6187@math.msu.edu
DTSTAMP:20180117T201532Z
SUMMARY:The Extended Bogomolny Equations and Teichmuller space
DESCRIPTION:Speaker\: Siqi He, Caltech\r\nWe will discuss Witten’s gauge theory approach to Jones polynomial and Khovanov homology by counting solutions to some gauge theory equations with singular boundary conditions. When we reduce these equations to 3-dimensional, we call them the extended Bogomolny equations. We will discuss a Donaldson-Ulenbeck-Yau type correspondence of the moduli space of the singular solutions to the Extended Bogomolny equations and Teichmuller space. If time permits, we will also discuss the relationship of the singular solutions moduli space with higher Teichmuller theory. This is joint work with Rafe Mazzeo.
LOCATION:C304 Wells Hall
DTSTART:20180125T190000Z
DTEND:20180125T200000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=6187
END:VEVENT
BEGIN:VEVENT
UID:20180117T201532-7201@math.msu.edu
DTSTAMP:20180117T201532Z
SUMMARY:QL Updates
DESCRIPTION:Speaker\: Bronlyn Wassink, Mathematics, MSU\r\n
LOCATION:C109 Wells Hall
DTSTART:20180129T211000Z
DTEND:20180129T220000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=7201
END:VEVENT
BEGIN:VEVENT
UID:20180117T201532-7229@math.msu.edu
DTSTAMP:20180117T201532Z
SUMMARY:A new proof of the finiteness principle
DESCRIPTION:Speaker\: Arie Israel, University of Texas at Austin\r\nThe Brudnyi-Shvartsman finiteness principle is a foundational result in the study of Whitney-type extension problems. This result provides an answer to the following question: How can we tell whether there exists a Hölder-smooth function that takes prescribed values on a given (arbitrary) subset of Euclidean space? In this talk I will describe new machinery for answering this question based on the notion of the “local complexity” of a set at a given position and scale. To complete the main induction argument we must prove that the complexity of an arbitrary set is bounded uniformly by an absolute constant. This is accomplished through an elementary lemma on the stabilization of the dynamics of a 1-parameter family of non-isotropic dilations acting on the space of positive-definite matrices. We conjecture an improvement to the constants in the stabilization lemma which would result in an improvement to the best-known constants in the finiteness principle. This is joint work with A. Frei-Pearson and B. Klartag.
LOCATION:C517 Wells Hall
DTSTART:20180131T211000Z
DTEND:20180131T220000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=7229
END:VEVENT
BEGIN:VEVENT
UID:20180117T201532-9247@math.msu.edu
DTSTAMP:20180117T201532Z
SUMMARY:TBA
DESCRIPTION:Speaker\: Guillem Cazassus, Indiana University\r\n
LOCATION:C304 Wells Hall
DTSTART:20180201T190000Z
DTEND:20180201T195000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=9247
END:VEVENT
BEGIN:VEVENT
UID:20180117T201532-9254@math.msu.edu
DTSTAMP:20180117T201532Z
SUMMARY:TBA
DESCRIPTION:Speaker\: Vladimir Peller, Michigan State University\r\n
LOCATION:C517 Wells Hall
DTSTART:20180207T211000Z
DTEND:20180207T220000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=9254
END:VEVENT
BEGIN:VEVENT
UID:20180117T201532-8243@math.msu.edu
DTSTAMP:20180117T201532Z
SUMMARY:Rectifiability and Minkowski bounds for the singular sets of multiple-valued harmonic spinors
DESCRIPTION:Speaker\: Boyu Zhang, Harvard University\r\nWe prove that the singular set of a multiple-valued harmonic spinor on a 4-manifold is 2-rectifiable and has finite Minkowski content. This result improves a regularity result of Taubes in 2014. It implies more precise descriptions for the limit behavior of non-convergent sequences of solutions to many important gauge-theoretic equations, such as the Kapustin-Witten equations, the Vafa-Witten equations, and the Seiberg-Witten equations with multiple spinors.
LOCATION:C304 Wells Hall
DTSTART:20180208T190000Z
DTEND:20180208T200000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=8243
END:VEVENT
BEGIN:VEVENT
UID:20180117T201532-7214@math.msu.edu
DTSTAMP:20180117T201532Z
SUMMARY:TBA
DESCRIPTION:Speaker\: Ekaterina Rapinchuk, MSU\r\n
LOCATION:C304 Wells Hall
DTSTART:20180216T211000Z
DTEND:20180216T220000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=7214
END:VEVENT
BEGIN:VEVENT
UID:20180117T201532-9252@math.msu.edu
DTSTAMP:20180117T201532Z
SUMMARY:Fractional Laplacians on Hamming cube and its Poincar\'e inequalities
DESCRIPTION:Speaker\: Alexander Volberg, MSU\r\n
LOCATION:C517 Wells Hall
DTSTART:20180221T211000Z
DTEND:20180221T220000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=9252
END:VEVENT
BEGIN:VEVENT
UID:20180117T201532-8236@math.msu.edu
DTSTAMP:20180117T201532Z
SUMMARY:Fostering productive and inclusive collaborative mathematics classrooms
DESCRIPTION:Speaker\: Jennifer Langer-Osuna, Stanford University\r\nStudent-led group work is an increasingly common activity in K-12 mathematics classrooms. Students are expected to debate ideas, justify conjectures, and come to consensus on reasonable approaches to solving problems. Yet several studies have shown that some students become unduly influential, while others' contributions are routinely marginalized. This talk pursues the question, how can collaborative mathematics classrooms foster both equity and productivity? To do so, this talk begins with an exploration of the role of authority relations during collaborative math activity, followed by new design research, in partnership with local schools, based on the results of earlier, exploratory work. The talk closes by contextualizing these projects in a broader body of work focused on examining classrooms designed to equitably engage students from diverse backgrounds in intellectually productive mathematical activity.
LOCATION:252 EH
DTSTART:20180228T184500Z
DTEND:20180228T201500Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=8236
END:VEVENT
BEGIN:VEVENT
UID:20180117T201532-8237@math.msu.edu
DTSTAMP:20180117T201532Z
SUMMARY:TBD
DESCRIPTION:Speaker\: Matthias Nagel, McMaster University, Canada\r\n
LOCATION:C304 Wells Hall
DTSTART:20180301T190000Z
DTEND:20180301T200000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=8237
END:VEVENT
BEGIN:VEVENT
UID:20180117T201532-9245@math.msu.edu
DTSTAMP:20180117T201532Z
SUMMARY:Spring Break
DESCRIPTION:Speaker\: No seminar\r\n
LOCATION:C304 Wells Hall
DTSTART:20180308T190000Z
DTEND:20180308T200000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=9245
END:VEVENT
BEGIN:VEVENT
UID:20180117T201532-6188@math.msu.edu
DTSTAMP:20180117T201532Z
SUMMARY:Yannick Sire
DESCRIPTION:Speaker\: \r\n
LOCATION:C517 Wells Hall
DTSTART:20180321T201000Z
DTEND:20180321T210000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=6188
END:VEVENT
BEGIN:VEVENT
UID:20180117T201532-7202@math.msu.edu
DTSTAMP:20180117T201532Z
SUMMARY:TBD
DESCRIPTION:Speaker\: Adam Lowrance, Vassar College\r\n
LOCATION:C304 Wells Hall
DTSTART:20180322T180000Z
DTEND:20180322T190000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=7202
END:VEVENT
BEGIN:VEVENT
UID:20180117T201532-7215@math.msu.edu
DTSTAMP:20180117T201532Z
SUMMARY:TBA
DESCRIPTION:Speaker\: Kristen Hendricks, Mathematics, MSU\r\n
LOCATION:C304 Wells Hall
DTSTART:20180323T201000Z
DTEND:20180323T210000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=7215
END:VEVENT
BEGIN:VEVENT
UID:20180117T201532-7204@math.msu.edu
DTSTAMP:20180117T201532Z
SUMMARY: A New Algorithm in Group Theory
DESCRIPTION:Speaker\: Rita Gitik\r\n We describe a new algorithm which determines if the intersection of a quasiconvex subgroup of a negatively curved group with any of its conjugates is infinite. The algorithm is based on the concepts of a coset graph and a weakly Nielsen generating set of a subgroup. We also give a new proof of decidability of a membership problem for quasiconvex subgroups of negatively curved groups.
LOCATION:C304 Wells Hall
DTSTART:20180326T201000Z
DTEND:20180326T213000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=7204
END:VEVENT
BEGIN:VEVENT
UID:20180117T201532-9243@math.msu.edu
DTSTAMP:20180117T201532Z
SUMMARY:TBD
DESCRIPTION:Speaker\: Ramanujan Santharoubane, University of Virginia\r\n
LOCATION:C304 Wells Hall
DTSTART:20180329T180000Z
DTEND:20180329T190000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=9243
END:VEVENT
BEGIN:VEVENT
UID:20180117T201532-9246@math.msu.edu
DTSTAMP:20180117T201532Z
SUMMARY:TBA
DESCRIPTION:Speaker\: Juanita Pinzon-Calcedo, North Carolina State\r\n
LOCATION:C304 Wells Hall
DTSTART:20180405T180000Z
DTEND:20180405T190000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=9246
END:VEVENT
BEGIN:VEVENT
UID:20180117T201532-9244@math.msu.edu
DTSTAMP:20180117T201532Z
SUMMARY:TBA
DESCRIPTION:Speaker\: Adam Saltz, University of Georgia\r\n
LOCATION:C304 Wells Hall
DTSTART:20180412T180000Z
DTEND:20180412T190000Z
URL:https://math.msu.edu/Seminars/TalkView.aspx?talk=9244
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