Mathematics | Michigan State University

Department of Mathematics

Seminars By Semester

Seminar: Semester:

Show past talks?

Download iCal

Talk_id	Date	Speaker	Title
15384	Thursday 9/13 4:10 PM		Postdoc Lightning Talks New Window Colloquium Speaker: Title: Postdoc Lightning Talks Date: 09/13/2018 Time: 4:10 PM - 5:00 PM Place: C304 Wells Hall No abstract available.
15378	Thursday 9/20 4:10 PM	Brendon Rhoades, University of California, San Diego	The combinatorics, algebra, and geometry of ordered set partitions New Window Colloquium Speaker: Brendon Rhoades, University of California, San Diego Title: The combinatorics, algebra, and geometry of ordered set partitions Date: 09/20/2018 Time: 4:10 PM - 5:00 PM Place: 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, Lusztig-Stanley, Ehresmann, Borel, and Lascoux-Sch\"utzenberger). We will then describe how these results generalize to ordered set partitions and discuss a connection with the Haglund-Remmel-Wilson {\em Delta Conjecture} in the field of Macdonald polynomials. Joint with Jim Haglund, Brendan Pawlowski, and Mark Shimozono.
15381	Thursday 9/27 4:10 PM	Igor Dolgachev, University of Michigan	The reflection group of a regular tetrahedron New Window Colloquium Speaker: Igor Dolgachev, University of Michigan Title: The reflection group of a regular tetrahedron Date: 09/27/2018 Time: 4:10 PM - 5:00 PM Place: 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 9-dimensional hyperbolic space, as the full group of automorphisms of some algebraic surfaces and as a lattice in a projective linear group over the 3-adic numbers.
15420	Thursday 10/4 4:10 PM	Yang Yang, Michigan State University	TBA (special colloquium) New Window Colloquium Speaker: Yang Yang, Michigan State University Title: TBA (special colloquium) Date: 10/04/2018 Time: 4:10 PM - 5:00 PM Place: C304 Wells Hall No abstract available.
14349	Thursday 10/11 4:10 PM	Deanna Needell, University of California, Los Angeles	TBA New Window Colloquium Speaker: Deanna Needell, University of California, Los Angeles Title: TBA Date: 10/11/2018 Time: 4:10 PM - 5:00 PM Place: C304 Wells Hall No abstract available.
14361	Thursday 10/18 4:10 PM	Frank Morgan, Williams College	Double Soap Bubbles and Densities New Window Colloquium Speaker: Frank Morgan, Williams College Title: Double Soap Bubbles and Densities Date: 10/18/2018 Time: 4:10 PM - 5:00 PM Place: C304 Wells Hall The familiar double soap bubble is the least-area 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.
15382	Thursday 11/1 4:10 PM	Rustum Choksi, McGill University	TBA New Window Colloquium Speaker: Rustum Choksi, McGill University Title: TBA Date: 11/01/2018 Time: 4:10 PM - 5:00 PM Place: C304 Wells Hall No abstract available.
14362	Thursday 11/8 4:10 PM	Jared Speck	TBA New Window Colloquium Speaker: Jared Speck Title: TBA Date: 11/08/2018 Time: 4:10 PM - 5:00 PM Place: C304 Wells Hall No abstract available.

Contact

Department of Mathematics
Michigan State University
619 Red Cedar Road
C212 Wells Hall
East Lansing, MI 48824
Phone: (517) 353-0844
Fax: (517) 432-1562

College of Natural Science

HOME