Seminars and Colloquia by Series

Brill--Noether theory and determinantal formulas for degeneracy loci

Series
Other Talks
Time
Friday, February 23, 2018 - 17:00 for 1 hour (actually 50 minutes)
Location
Classroom 105 in the D.M. Smith building
Speaker
Associate ProfessorSwarthmore College
Degeneracy loci of morphisms between vector bundles have been used in a wide range of situations, including classical approaches to the Brill--Noether theory of special divisors on curves. I will describe recent developments in Schubert calculus, including K-theoretic formulas for degeneracy loci and their applications to K-classes of Brill--Noether loci. These recover the formulas of Eisenbud--Harris, Pirola, and Chan--López--Pflueger--Teixidor for Brill--Noether curves. This is joint work with Dave Anderson and Nicola Tarasca.

What is Hamiltonian mechanics? Why use it? How to use it.

Series
Other Talks
Time
Friday, January 12, 2018 - 10:10 for 1.5 hours (actually 80 minutes)
Location
Skiles 005
Speaker
Rafael de la LlaveSchool of Mathematics, Georgia Inst. of Technology
This is a preliminary talk for the Workshop "Introduction to Dynamical Systems Methods for Mission Design" that will take place Jan 16-19 in the school of Mathematics. In this talk, we will present the basics of Hamiltonian dynamics and why it is useful. It ishoped that it will be accesible for people with background in undergraduate differential equations who want to participate in the workshop.

Simplifying curves on surfaces (undergraduate project)

Series
Other Talks
Time
Friday, December 1, 2017 - 15:00 for 30 minutes
Location
Skiles 171
Speaker
Shreyas Casturi, Jonathan Chen, Vignesh Raman, Kyle XiaoGatech undergraduates
This is a brief (15 minute) presentation of an undergraduate project that took place in the 2017 Fall semester.

AWM lunch talk- Partition Identities Related to Stanley's Theorem

Series
Other Talks
Time
Wednesday, October 11, 2017 - 11:30 for 1 hour (actually 50 minutes)
Location
Skiles 005
Speaker
Maxie SchmidtGeorgia Tech

Please Note: Lunch will be provided. The talk will be the first 25 minutes of the hour and then will be followed by discussion.

In a recent article to appear in the American Mathematical Mothly next year, we use the Lambert series generating function for Euler’s totient function to introduce a new identity for the number of 1’s in the partitions of n. New expansions for Euler’s partition function p(n) are derived in this context. These surprising new results connect the famous classical totient function from multiplicative number theory to the additive theory of partitions. We will define partitions and several variants of Euler's partition function in the talk to state our new results.

Quolloquium: Spectral geometry of quantum waveguides

Series
Other Talks
Time
Wednesday, September 27, 2017 - 13:00 for 1 hour (actually 50 minutes)
Location
Skiles 255
Speaker
David KrejcirikCzech Technical University

Please Note: CORRECTED DATE. NOTE: This is the first in a forthcoming series of colloquia in quantum mathematical physics that will take place this semester. The series is a spin-off of last year's QMath conference, and is intended to be of broad interest to people wanting to know the state of the art of current topics in mathematical physics.

We shall make an overview of the interplay between the geometry of tubular neighbourhoods of Riemannian manifold and the spectrum of the associated Dirichlet Laplacian. An emphasis will be put on the existence of curvature-induced eigenvalues in bent tubes and Hardy-type inequalities in twisted tubes of non-circular cross-section. Consequences of the results for physical systems modelled by the Schroedinger or heat equations will be discussed.

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