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Please note: The University of Waterloo is closed for all events until further notice.

Events - 2014

Friday, September 12, 2014 — 3:30 PM EDT

Exponentially Dense Matroids

Speaker: Peter Nelson
Affiliation: University of Waterloo
Room: Mathematics 3 (M3) 3103

Abstract: 

Wednesday, September 10, 2014 — 3:30 PM EDT

A Glimpse of the Unique Games Conjecture

Speaker: Joesph Cheryian
Affiliation: University of Waterloo
Room: Mathematics 3 (M3) 2134

Abstract: 

Friday, August 15, 2014 — 3:30 PM EDT

A Survey on Multi-flows in Graphs and Matroids

Speaker: Bertrand Guenin
Affiliation: University of Waterloo
Room: Mathematics 3 (M3) 3103

Abstract: 

Wednesday, August 13, 2014 — 3:30 PM EDT

A Proof of Lehman's Theorem

Speaker: Bertrand Guenin
Affiliation: University of Waterloo
Room: Mathematics 3 (M3) 3103

Abstract: 

Lehman proved that if the set covering polyhedron has a fractional extreme point, then it has one with a very special structure. I will give a proof of this result and describe an algorithmic version of it.

Friday, August 8, 2014 — 3:30 PM EDT

The Potential Technique in Graph Coloring

Speaker: Luke Postle
Affiliation: University of Waterloo
Room: Mathematics 3 (M3) 3103

Abstract: 

We discuss recent advancements and applications of the

Friday, August 1, 2014 — 3:30 PM EDT

The Gindikin-Karpelevich Formula and Combinatorics of Crystals

Speaker: Ben Salisbury
Affiliation: Central Michigan University
Room: Mathematics 3 (M3) 3103

Abstract: 

Wednesday, July 30, 2014 — 4:30 PM EDT

Additive Number Theory, Graphs and Matroids

Speaker: Ahmad Abdi
Affiliation: University of Waterloo
Room: Mathematics and Computer Building (MC) 6486

Abstract:

Friday, July 25, 2014 — 3:30 PM EDT

Permutations and Book Embeddings of Graphs

Speaker: Gelasio Salazar
Affiliation: San Luis Potosi University
Room: Mathematics 3 (M3) 3103

Abstract:

Friday, July 18, 2014 — 3:30 PM EDT

Understanding Structure in Conic Mixed Integer Programs: From Minimal Inequalities to Conic Disjunctive Cuts

Speaker: Fatma Kilinc-Karzan
Affiliation: Carnegie Mellon University
Room: Mathematics 3 (M3) 3103

Abstract: 

Wednesday, July 16, 2014 — 3:30 PM EDT

Pfaffian Bipartite Graphs

Speaker: Nishad Kothari
Affiliation: University of Waterloo
Room: Mathematics 3 (M3) 2134

Abstract:  

Friday, July 11, 2014 — 3:30 PM EDT

Highly Connected Matroids in Minor-closed Classes

Speaker: Jim Geelen
Affiliation: University of Waterloo
Room: Mathematics 3 (M3) 3103

Abstract:

With Bert Gerards and Geoff Whittle we have a structural
characterization of the matroids in any minor-closed class over any given

Friday, July 4, 2014 — 3:30 PM EDT

Recent Advances in Algorithms For The Discrete Logarithm Problem

Speaker: Alfred Menezes
Affiliation: University of Waterloo
Room: Mathematics 3 (M3) 3103

Abstract: 

Wednesday, July 2, 2014 — 3:30 PM EDT

Packing and Covering Small Cliques

Speaker: Michael Szestopalow
Affiliation: University of Waterloo
Room: Mathematics 3 (M3) 2134

Abstract: 

Friday, June 27, 2014 — 4:00 PM EDT

The Erdos-Ko-Rado Theorem, An Algebraic Perspective

Speaker: Karen Meagher
Affiliation: University of Regina
Room: Mike & Ophelia Lazaridis Quantum-Nano Centre (QNC) 0101

Abstract: 

Several years ago I had the good fortune to have an extremely
productive post-doctoral fellowship with Chris. Our work from this

Monday, June 23, 2014 (all day) to Friday, June 27, 2014 (all day)

A conference to celebrate the work of Chris Godsil

Conference poster (PDF).

Banquet photographs.

Friday, June 20, 2014 — 3:30 PM EDT

A Sampler of Combinatorial Problems on Spheres

Speaker: William J. Martin
Affiliation: Worcester Ploytechnic Institute
Room: Mathematics 3 (M3) 3103

Abstract: 

Wednesday, June 18, 2014 — 3:30 PM EDT

Properties of Graphs With Bounded Highway Dimension

Speaker: Andreas Feldmann
Affiliation: University of Waterloo
Room: Mathematics 3 (M3) 2134

Abstract: 

Tuesday, June 17, 2014 — 1:00 PM EDT

The Laplacian Spectral Excess Theorem for Distance-regular Graphs

Speaker: Miquel Angel Fiol Mora
Affiliation: Universitat Politenica de Catalunya
Room: Mathematics and Computer Building (MC) 6486

Abstract: 

Friday, June 13, 2014 — 3:30 PM EDT

Algorithms for Random k-SAT and Colouring Random Graphs

Speaker: Mike Molloy
Affiliation: University of Toronto
Room: Mathematics 3 (M3) 3103

Abstract:

Thursday, June 12, 2014 — 1:00 PM EDT

Unique Vector Colorings: Core Concepts

Speaker: David Roberson
Affiliation: Nanyang Technological University
Room: Mathematics and Computer Building (MC) 6486

Abstract: 

Friday, June 6, 2014 — 3:30 PM EDT

Dense Triangle-free Binary Matroids

Speaker: Peter Nelson
Affiliation: University of Waterloo
Room: Mathematics 3 (M3) 3103

Abstract:

Friday, May 30, 2014 — 3:30 PM EDT

Exponential Improvement in Precision for Simulating Sparse Hamiltonians

Speaker: Andrew Childs
Affiliation: University of Waterloo
Room:

Mathematics 3 (M3) 3127

Wednesday, May 28, 2014 — 3:30 PM EDT

The Set Packing and Set Covering Polyhedra

Speaker: Ahmad Abdi
Affiliation: University of Waterloo
Room: Mathematics and Computer Building (MC) 6486

Abstract:

Tuesday, May 27, 2014 — 4:30 PM EDT

A Gentle Introduction to Knots and Knot Invariants

Speaker: Janis Lazovskis
Affiliation: University of Waterloo
Room: Mathematics and Computer Building (MC) 4041

Abstract:

Friday, May 23, 2014 — 3:30 PM EDT

Duality in the Combinatorics of Posets

Speaker: William T. Trotter
Affiliation: Georgia Institute of Technology
Room: Mathematics 3 (M3) 2134

Abstract: 

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