Search

Algebraic Geometry Algebra/Logic DeLong Diversity Functional Analysis Grad Algebra/Logic Homotopy Init Conditions Kempner Lie Theory Math Club Math Phys Noncomm Geometry Number Theory PDE/Analysis Probability Rep Theory Grad Student Seminar Thesis Defenses Topology Ulam Math Edu

Events happening on November 5, 2013

Return to this week

Print these events

Nov. 05, 2013 9:05pm (Math 3…	Lie Theory Erica Shannon (CU) X The simple Lie algebra d_n has three minuscule representations: the natural representation and the two spin representations. I'll explain how to construct the Lie algebra d_n and how to use actions on polytopes to build these three representations. This talk will be as concrete as possible given that the smallest example is when n=4. No background knowledge of Lie algebras or representation theory will be assumed. Minuscule Representations of d_n via Polytopes
Nov. 05, 2013 10am (MATH 350)	Ulam Thomas Ivey X I'll give a broad introduction to the subject of integrablesystems of PDE. While there is no clear-cut definition of integrability, the most well-known integrable equations share several common features which I will review: soliton solutions, Lax pairs, Backlund transformations, and bi-Hamiltonian structures leading to infinitely many conservation laws and commuting flows. Integrable PDE, part 1
Nov. 05, 2013 1pm (MATH 220)	Grad Algebra/Logic Clifford Bridges (CU Boulder) A Method to Realize Groups as Galois groups: Rigidity in A_n, Part 3
Nov. 05, 2013 1pm (MATH 350)	Number Theory Stefan Erickson X A fundamental question in number theory is enumerating number fields and function fields with discriminant up to some bound. While the situation for quadratic fields is fairly straightforward, cubic fields pose a greater challenge. After a brief introduction to zeta functions and function fields, we will describe the techniques behind enumerating cubic function fields with a given quadratic resolvent, building on the work of Cohen-Morra for cubic number fields. This is joint work with Colin Weir (Simon Frasier) and Ravi Donepudi (Colorado College). Enumerating Cubic Function Fields
Nov. 05, 2013 3pm (Math 350)	Algebraic Geometry Anton Dzhamay (University of Northern Colorado) X The goal of this talk is to describe some interesting geometry that underlines a special class of discrete integrable systems known as discrete Painlevé equations. In the first hour we'll consider some concrete examples that we then use as a motivation for the general introduction into the Sakai's theory of classification of discrete Painlevé equations using the Okamoto surface of the equation. In the second hour we'll describe various sources of such equations and then show how the underlying geometry can help us relate different equations of the same type, up to finding very explicit change of coordinates that transforms one equation into the other. On the geometry of discrete Painlevé equations
Nov. 05, 2013 3pm (MATH 350)	PDE/Analysis Taylor Klotz (University of Colorado at Boulder) X The Ricci Flow has become a famous topic for its role in the solution of the Poincare conjecture which is a special case of the Geometrization conjecture. We will begin with the statement of these famous conjectures, briefly discuss the relationship to the Ricci Flow, and then present some special solutions. Ideas of Perelman's work on the topic may be mentioned but specific details will not be covered. Some Basics of Ricci Flow

Return to the top of the page