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Events

Thursday, February 23, 2017 — 3:00 PM EST

Title: Spin models and covers

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

Abstract:

Thursday, February 16, 2017 — 4:00 PM EST

Title: Companion matrices and rational normal form

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

Abstract:

Thursday, February 16, 2017 — 4:00 PM EST

Title: Extensions of highly connected matroids

Speaker: Peter Nelson Affiliation: University of Waterloo Location: MC 5479

Abstract:

We consider single-element extensions of cliques and projective geometries, as well as their unavoidable minors.

Wednesday, February 15, 2017 — 4:00 PM EST

Title: Ideal clutters that do not pack

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

Abstract:

Thursday, February 9, 2017 — 4:00 PM EST

Title: Perron's Formula

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

Abstract:

Thursday, February 9, 2017 — 3:00 PM EST

Title: Kronecker's Theorem

Speaker: Christopher van Bommel Affiliation: University of Waterloo Location: MC 6486

Abstract:

Wednesday, February 8, 2017 — 4:00 PM EST

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

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

Abstract:

Thursday, February 2, 2017 — 4:00 PM EST

Title: Intertwining connectivity in matroids

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

Abstract:

Thursday, February 2, 2017 — 3:00 PM EST

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.

Wednesday, February 1, 2017 — 4:00 PM EST

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

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

Abstract:

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