Events - March 2018

Wednesday, March 28, 2018 — 3:30 PM EDT

Serban Belinschi, Université Toulouse III

"Noncommutative hyperbolic metrics"

Tuesday, March 27, 2018 — 3:00 PM EDT
Parham Hamidi, Department of Pure Mathematics, University of Waterloo
 

“The State of the Union”

Tuesday, March 27, 2018 — 1:30 PM EDT

Oliver Schlotterer, Max Planck Institute for Gravitational Physics/Perimeter Institute

"The number theory of string amplitudes"

Monday, March 26, 2018 — 1:30 PM EDT

Brett Nasserden, Department of Pure Mathematics, University of Waterloo

“Generalized Mandelbrot sets in the global setting”

Friday, March 23, 2018 — 2:30 PM EDT

Jonathan Fraser, University of St. Andrews

"The Assouad spectrum"

Friday, March 23, 2018 — 2:30 PM EDT

Matthias Nagel, McMaster University

"Triple linking numbers and surface systems"

We relate fillability of two link exteriors, and the question when two links admit homeomorphic surface systems to (a refinement of) Milnor’s triple linking numbers. This extends a theorem of Davis-Roth to include also links with non-vanishing linking numbers. This is joint work with C. Davis, P. Orson, and M. Powell.

MC 5403

Friday, March 23, 2018 — 2:00 PM EDT

Jake Zimmermann Simmons, Department of Pure Mathematics, University of Waterloo

"An example of a variety which is locally finite and residually finite but not residually < N for any natural number N (and also unfortunately not of finite type)"

Wednesday, March 21, 2018 — 2:00 PM EDT

Eli Shamovich, Department of Pure Mathematics, University of Waterloo

"Free Function Theory and Operator Algebras"

Tuesday, March 20, 2018 — 3:00 PM EDT

Nickolas Rollick, Department of Pure Mathematics, University of Waterloo

"The ideal tool"

Tuesday, March 20, 2018 — 1:30 PM EDT

Arpita Kar, Queen's University

"On the normal number of prime factors of Ramanujan Tau function"

We will discuss various results concerning ω(τ(p)), ω(τ(n)), ω(τ(p+1)) where τ denotes Ramanujan Tau function and ω(n) denotes the number of prime factors of n counted without multiplicity. This is work in progress with Prof. Ram Murty.

MC 5417

Monday, March 19, 2018 — 1:30 PM EDT

Brett Nasserden, Department of Pure Mathematics, University of Waterloo

"Archimedean and non-Archimedean Mandelbrot Sets"

Friday, March 16, 2018 — 2:30 PM EDT

Dilian Yang, University of Windsor

"Self-similar higher-rank graph C*-algebras"

Friday, March 16, 2018 — 2:30 PM EDT

Tatyana Barron, Western University

"Multisymplectic manifolds and quantization"

Friday, March 16, 2018 — 2:00 PM EDT

Justin Laverdure, Department of Pure Mathematics, University of Waterloo

"Residually small varieties have no more than continuum-sized SIs"

We go over a proof of a result of Taylor's: that, in a countable signature, if a variety K has some bound on the size of its subdirectly irreducible algebras (a so-called "residually small" variety), then in fact this bound is at most the cardinality of the continuum.

MC 5479

Wednesday, March 14, 2018 — 3:30 PM EDT

Tobias Fritz, Max Planck Institute for Mathematics in the Sciences / Perimeter Institute

"Homogeneous length functions on groups: a Polymath adventure"

Tuesday, March 13, 2018 — 4:30 PM EDT

Cam Marcott, Department of Combinatorics & Optimization, University of Waterloo

"What’s an amplituhedron?”

I'll introduce the amplituhedron, focusing on why the suffix "hedron" is justified.

MC 5501

Tuesday, March 13, 2018 — 3:00 PM EDT

Eric Boulter, Department of Pure Mathematics, University of Waterloo

"Closed Embeddings and Ideal Sheaves"

This week we will use our intuitive idea of closed subschemes in the affine case to develop closed subschemes in general. As with most of the properties of schemes we have considered so far, closed subschemes will be defined in terms of their associated morphisms, in this case closed embeddings. We will also define locally closed embeddings and look at the conditions under which an ideal sheaf of a scheme induces a closed embedding.

MC 5417

Tuesday, March 13, 2018 — 1:30 PM EDT

Guhan Venkat, Laval University

"An integral Euler system for the Rankin-Selberg product of two supersingular modular forms"

Monday, March 12, 2018 — 1:30 PM EDT

David Urbanik, Department of Pure Mathematics, University of Waterloo

"The Role of Potential Theory in the Work of Baker-DeMarco"

Friday, March 9, 2018 — 2:30 PM EST

Mizanur Rahaman, Department of Pure Mathematics, University of Waterloo

"Eventually Entanglement Breaking Maps"

Friday, March 9, 2018 — 2:30 PM EST

Nick Rollick, Department of Pure Mathematics, University of Waterloo

"Approximating projective subvarieties"

Wednesday, March 7, 2018 — 3:30 PM EST

Liron Speyer, University of Virginia

"Decomposable Specht modules"

I will give a brief survey of the study of decomposable Specht modules for the symmetric group and its Hecke algebra, which includes results of Murphy, Dodge and Fayers, and myself. I will then report on an ongoing project with Louise Sutton, in which we are studying decomposable Specht modules for the Hecke algebra of type indexed by 'bihooks'.

MC 5403

Wednesday, March 7, 2018 — 2:00 PM EST

Matthew Harrison-Trainor, Department of Pure Mathematics, University of Waterloo

"How to know when you've proved the best possible characterization or classification"

Tuesday, March 6, 2018 — 3:00 PM EST

Christopher Hawthorne, Department of Pure Mathematics, University of Waterloo

"Elimination theory and closed embeddings"

We finish chapter 7 with a discussion of quantifier elimination and the fundamental theorem of elimination theory; we then begin to study closed embeddings of schemes.

MC 5417

Tuesday, March 6, 2018 — 1:30 PM EST

François Seguin, Queen's University

"Prime divisors of sparse values of cyclotomic polynomials"

We will be presenting a result about the largest prime divisor of cyclotomic polynomials evaluated at a specific integer.

MC 5417

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