Events - August 2012

Thursday, August 23, 2012 — 5:00 PM EDT

Julia Gordon, University of British Columbia

"The strange world of p-adic numbers"

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

Georgia Benkart, University of Wisconsin - Madison

"Ladies of the Rings"

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

Matilde Lalin, Université de Montréal

"Mahler measure of some K3-surfaces"

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

Paul-Elliot Angles D'Auriac, Université Claude Bernard Lyon 1 and Pure Mathematics, University of Waterloo

"The bounded jump operator"

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

Spiro Karigiannis, Pure Mathematics, University of Waterloo

"Holonomy, G-structures, and intrinsic torsion"

Wednesday, August 15, 2012 — 1:00 PM EDT

Dennis The, Australian National University

"The gap phenomenon in parabolic geometries"

Many geometric structures (such as Riemannian, conformal, CR,
projective, systems of ODE, and various types of generic
distributions) admit an equivalent description as Cartan geometries.
For Cartan geometries of a given type, the maximal amount of symmetry
is realized by the flat model.  However, if the geometry is not

Thursday, August 9, 2012 — 4:00 PM EDT

Theodore Hui, Pure Mathematics Department, University of Waterloo

“The Dynamics of the w Function”

Thursday, August 9, 2012 — 2:30 PM EDT

Adam Gutter, Pure Mathematics Department, University of Waterloo

"Zariski Structures: Non-Standard Analysis - Part II"

In this seminar, our focus is on introducing several new geometrically
motivated concepts, namely coverings, multiplicity, and local
functions. Time permitting, we may also discuss topological sorts, a
tool that allows us to generate new Zariski structures from a given
Zariski structure.

Thursday, August 9, 2012 — 1:00 PM EDT

Omar Leon Sanchez, Pure Mathematics Department, University of Waterloo

“A couple of basic questions on ideals of K[x]”

Let K be a perfect field (i.e. K = Kp), L ≥ K and x an n-tuple of indeterminates. We will intensely look at the question: If I is radical in K[x], is IL[x] radical as well? As a consequence we will be able to answer the questions:

Wednesday, August 8, 2012 — 3:40 PM EDT

Matthew Harrison-Trainor, Pure Mathematics University of Waterloo

“Pairs of computable structures”

Wednesday, August 8, 2012 — 3:09 PM EDT

Ian Payne, Pure Mathematics Department, University of Waterloo

“Determining CSP complexity using universal algebra”

Wednesday, August 8, 2012 — 1:00 PM EDT

Li Chen & Jordan Rose, Pure Mathematics Department, University of Waterloo

Li Chen

"Symmetry groups of differential Equations Part III - Symmetry of differential equations with examples"
Tuesday, August 7, 2012 — 10:00 AM EDT

Stanley Xiao, Pure Mathematics Department, University of Waterloo

"SOME RESULTS ON POWERFREE VALUES OF POLYNOMIALS IN ONE OR TWO VARIABLES"

In this talk I will discuss the problem of finding powerfree values of polynomials in one or two variables, with an emphasis on the determinant method of D.R. Heath-Brown.

Thursday, August 2, 2012 — 2:30 PM EDT

Adam Gutter, University of Waterloo

"Zariski Structures: Non-Standard Analysis"

In this seminar, our focus is on introducing several new geometrically
motivated concepts, namely coverings, multiplicity, and local
functions. Time permitting, we may also discuss topological sorts, a
tool that allows us to generate new Zariski structures from a given
Zariski structure.

Wednesday, August 1, 2012 — 3:40 PM EDT

Matthew Harrison-Trainor, Pure Mathematics, University Of Waterloo

"Pairs of computable structures"

We will begin by finishing the proof of the meta-theorem on n-systems, and then we will look at an application of back-and-forth relations and n-systems.

Wednesday, August 1, 2012 — 1:00 PM EDT

Pure Mathematics Department, University of Waterloo

Matthew Beckett “Non-minimal Yang-Mills solutions”

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