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Thursday, January 19, 2017 3:00 pm - 4:00 pm EST (GMT -05:00)

Algebraic Graph Theory Seminar: Krystal Guo

Title: Symbolic Dynamics for Graph Theorists

Speaker: Krystal Guo
Affiliation: University of Waterloo
Location: MC 6486

Abstract: 

We introduce some basic concepts in symbolic dynamics, using graph theoretic language, and discuss some open problems.

Wednesday, January 25, 2017 4:00 pm - 4:00 pm EST (GMT -05:00)

Combinatorics & Optimization Seminar: Justin Toth

Title: A short new proof that the Stable Matching Polytope is Integral

Speaker: Justin Toth
Affiliation: University of Waterloo, Combinatorics and Optimization Department
Location: MC 6486

Abstract:

Wednesday, February 1, 2017 4:00 pm - 4:00 pm EST (GMT -05:00)

Optimization Seminar: Stephen Vavasis

Title: A unified convergence bound for conjugate gradient and  
accelerated gradient

Speaker: Steve Vavasis
Affiliation: University of Waterloo
Location: MC 6486

Abstract:

Thursday, February 2, 2017 3:00 pm - 3:00 pm EST (GMT -05:00)

Algebraic Graph Theory Seminar: Chris Godsil

Title: Perturbing strongly regular graphs

Speaker: Chris Godsil
Affiliation: University of Waterloo
Location: MC 6486

Abstract:

We will study the behaviour of the spectrum of a strongly regular graph when we change the weight of an edge. One consequence will be a proof that all the graphs we get from a strongly regular graph by deleting one edge are cospectral.

Thursday, February 2, 2017 4:00 pm - 4:00 pm EST (GMT -05:00)

Graphs and Matroids Seminar: Rong Chen

Title: Intertwining connectivity in matroids

Speaker: Rong Chen
Affiliation: Fuzhou University
Location: MC 5479

Abstract:

Seminar abstract

Wednesday, February 8, 2017 4:00 pm - 4:00 pm EST (GMT -05:00)

Optimization Seminar - Vishnu Narayan

Title: Approximating 2-edge- and 2-vertex-connected spanning subgraphs

Speaker: Vishnu Narayan
Affiliation: University of Waterloo
Location: MC 6486

Abstract:

Thursday, February 9, 2017 4:00 pm - 4:00 pm EST (GMT -05:00)

Joint Colloquium/Music Fest: Ertan Elma

Title: Perron's Formula

Speaker: Ertan Elma
Affiliation: University of Waterloo
Location: MC 5501

Abstract:

Wednesday, February 15, 2017 4:00 pm - 4:00 pm EST (GMT -05:00)

Optimization Seminar - Ahmad Abdi

Title: Ideal clutters that do not pack

Speaker: Ahmad Abdi
Affiliation: University of Waterloo
Location: MC 6486

Abstract: