## Contact Info

Pure MathematicsUniversity of Waterloo

200 University Avenue West

Waterloo, Ontario, Canada

N2L 3G1

Departmental office: MC 5304

Phone: 519 888 4567 x43484

Fax: 519 725 0160

Email: puremath@uwaterloo.ca

Friday, October 26, 2012 3:30 PM EDT

Thursday, October 25, 2012 3:30 PM EDT

Let A be a commutative algebraic group dened over a number field K. For a prime } in K where A has good reduction, let N};n be the number of n-torsion F}-rational points of the reduction of A modulo } where F} is the residue field of } and n is a positive integer. When A is of dimension one

Friday, October 19, 2012 3:30 PM EDT

A classical result of Glimm from 1961 asserts that the irreducible

representations of a given separable C*-algebra A are classifiable by real

numbers up to unitary equivalence if and only if A is type I. In 2008,

Kerr-Li-Pichot and, independently, Farah proved that when A is not type I,

Thursday, October 18, 2012 2:30 PM EDT

The aim of this talk is to build up as much intuition as time allows about all things simplicial. This includes n-simplices, simplicial complexes and their polytopes, abstract simplicial complexes and the geometric realisation of such abstract objects.

Wednesday, October 17, 2012 3:30 PM EDT

Monday, October 15, 2012 4:00 PM EDT

Friday, October 12, 2012 3:30 PM EDT

Thursday, October 11, 2012 2:30 PM EDT

Wednesday, October 10, 2012 3:30 PM EDT

Tuesday, October 9, 2012 3:30 PM EDT

Friday, October 5, 2012 3:30 PM EDT

Thursday, October 4, 2012 2:30 PM EDT

Wednesday, October 3, 2012 3:30 PM EDT

Friday, September 28, 2012 3:30 PM EDT

Thursday, September 27, 2012 4:30 PM EDT

Thursday, September 27, 2012 2:30 PM EDT

Monday, September 24, 2012 4:00 PM EDT

The recent work of Arthur on classification of automorphic

representations on classical groups is a landmark result in the Langlands'

program. In this talk we will try to indicate the nature of the

classification and the tools that are used in the proof.

Refreshments will be served in MC 5046 at 3:30.

Friday, September 21, 2012 3:30 PM EDT

Let *G* be a locally compact group. G. Pisier considered the operator space

Thursday, September 20, 2012 2:30 PM EDT

This is the first, introductory lecture to a learning seminar on discrete

homotopies for binary reflexive digraphs and their application to finite

relational structures. In this lecture I will briefly overview the idea

of homotopy, state Taylor's theorem (that the existence of continuous

Tuesday, September 18, 2012 2:30 PM EDT

Universal algebra has its roots in logic, and occasionally its problems approach the domain of logic. In this lecture I will explain two old open problems of this kind, both involving (incomplete) theories axiomatizable by equations.

Please note the time - regular time for Logic seminars will be 3:30pm.

Thursday, August 23, 2012 5:00 PM EDT

This talk will be about the fields of p-adic numbers -- which, like the

real numbers, are completions of the rationals, but with respect to a

different metric -- the metric that reflects divisibility by a prime p.

We will see some very strange effects caused by this unusual metric, do

Monday, August 20, 2012 5:00 PM EDT

In this trilogy of tales, we will meet three women who persevered

against all odds to leave a lasting mark on mathematics and

on future generations.

Thursday, August 16, 2012 2:30 PM EDT

We study the Mahler measure of the three-variable Laurent

polynomial x+1/x+y+1/y+z-k where k is a parameter. The zeros of this

polynomial define (after desingularization) a family K3-surfaces. In

favorable cases, a singular K3-surface is obtained and the Mahler measure

is related to its L-function. This was first studied by Marie-Jose Bertin.

Wednesday, August 15, 2012 4:30 PM EDT

The jump is an operator on sets with nice properties. It is

defined as the halting set relativized to oracles, but this

definition does not take into account how far we use the oracle. This

leads to the fact that some of these nice properties

do not hold for the bounded Turing reducibility, such as the

Schoenfield jump inversion. We will define another

Wednesday, August 15, 2012 2:30 PM EDT

University of Waterloo

200 University Avenue West

Waterloo, Ontario, Canada

N2L 3G1

Departmental office: MC 5304

Phone: 519 888 4567 x43484

Fax: 519 725 0160

Email: puremath@uwaterloo.ca

University of Waterloo

University of Waterloo

43.471468

-80.544205

200 University Avenue West

Waterloo,
ON,
Canada
N2L 3G1

The University of Waterloo acknowledges that much of our work takes place on the traditional territory of the Neutral, Anishinaabeg and Haudenosaunee peoples. Our main campus is situated on the Haldimand Tract, the land granted to the Six Nations that includes six miles on each side of the Grand River. Our active work toward reconciliation takes place across our campuses through research, learning, teaching, and community building, and is co-ordinated within our Office of Indigenous Relations.