Past Events
Scientific, Seminar
Topology Seminar: Craig Westerland
October 4, 2017
University of British Columbia
I will explain some new techniques for computing the homology of braid groups with coefficients in a certain class of exponential representations that arise in a natural way from braided monoidal categories. Surprisingly (at least to me), these...
Scientific, Seminar
Probability Seminar: Yinon Spinka
October 4, 2017
University of British Columbia
We present a new condition for the existence of long-range order in discrete spin systems, which emphasizes the role of entropy and high dimension. The condition applies to all symmetric nearest-neighbor discrete spin systems with an internal...
Scientific, Seminar
Math Biology Seminar: Mike Irvine
October 4, 2017
University of British Columbia
The rapid increase of fentanyl and fentanyl analogues in British Columbia has led to a public health emergency being declared and a rapid increase in overdoses and overdose-related deaths in the province. Numerous interventions have been proposed in...
Scientific, Seminar
Discrete Math Seminar: Imre Barany
October 3, 2017
University of British Columbia
Let B be the unit ball of a norm in the d-dimensional space and assume that V is a finite subset of B, and the sum of the vectors in V is the zero vector. A theorem of Steinitz from 1914 says that there is an ordering v_1,...,v_n of the vectors in V...
Scientific, Seminar
Scientific Computation and Applied & Industrial Mathematics: Eldad Haber
October 3, 2017
University of British Columbia
In this talk we will explore deep neural networks from a dynamical systems point of view. We will show that the learning problem can be cast as a path planning problem with PDE constraint. This opens the door to conventional Computational techniques...
Scientific, Seminar
Lethbridge Number Theory and Combinatorics: Andrew Fiori
October 2, 2017
University of Lethbridge
Primality testing has a number of important applications. In particular in cryptographic applications the complexity of existing deterministic algorithms causes increasing latency as the size of numbers we must test grow and the number of tests we...
Scientific, Seminar
PIMS- SFU CSC Seminar: Mike Irvine
September 29, 2017
Simon Fraser University
The rapid increase of fentanyl and fentanyl analogues in British Columbia has led to a public health emergency being declared and a rapid increase in overdoses and overdose-related deaths in the province. Numerous interventions have been proposed in...
Scientific, Seminar
UBC Math Biology Seminar: Vincent Calvez
September 27, 2017
University of British Columbia
Concentration waves of swimming bacteria Escherichia coli were described in his seminal paper by Adler (Science 1966). These experiments gave rise to intensive PDE modelling and analysis, after the original model by Keller and Segel (J. Theor. Biol...
Scientific, Seminar
UBC Discrete Math Seminar: Dominic Searles
September 26, 2017
University of British Columbia
We establish a poset structure on combinatorial bases of polynomials, defined by positive expansions. These bases include the well-studied Schubert polynomials, Demazure characters and Demazure atoms, as well as the recently-introduced slide and...
Scientific, Seminar
Department Colloquium: Young-Heon Kim
September 22, 2017
University of British Columbia
Probability measures are key objects in many scientific and engineering areas that deal with randomness, distributions, data sets, etc. When coupled with optimization, many interesting questions naturally arise. In this talk, I will explain a few of...