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Events

Friday, December 11, 2015 — 3:30 PM EST

Title: A branch-and-cut-and-price algorithm for the pollution routing problem

Friday, December 4, 2015 — 3:30 PM EST

Title: The quantum information cost of forgetting classical information

Wednesday, December 2, 2015 — 3:30 PM EST

Title: Generalized quadrangles V: GQs and quantum walks

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

Abstract: We will give another classical construction for generalized quadrangles. We will then explain a connection between quantum walks and generalized quadrangles.

Tuesday, December 1, 2015 — 10:30 AM EST

Title: Matroids with a spanning clique

Speaker: Peter Nelson
Affiliation: University of Waterloo
Room: MC 6486

Abstract: I will discuss a recent result on the structure of matroids that are spanned by the cycle matroid of a complete graph, and also put the result in the wider context of matroid structure theory for minor-closed classes.

Monday, November 30, 2015 — 4:15 PM EST

Title: A branch-and-cut-and-price algorithm for the pollution routing problem

Wednesday, November 25, 2015 — 3:30 PM EST

Title: Quantum walks III: strongly cospectral vertices

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

Abstract: This week, we continue with our learning series on quantum  
walks. We will look at strongly cospectral vertices.

Tuesday, November 24, 2015 — 3:30 PM EST

Title: The typical structure of intersecting families

Tuesday, November 24, 2015 — 10:30 AM EST

Title: Tree-chromatic number is not equal to path-chromatic number

Monday, November 23, 2015 — 4:15 PM EST

Title: Aligned curves and height functions on Jacobians of curves

Wednesday, November 18, 2015 — 3:30 PM EST

Title: Generalized quadrangles IV: classical families

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

Abstract: This week, we continue with our learning series on generalized quadrangles. We will give several classical constructions for generalized quadrangles.

Tuesday, November 17, 2015 — 10:30 AM EST

Title:  Spikes

Speaker: Jim Geelen
Affiliation: University of Waterloo
Room: MC 6486

Abstract: This talk will be a tutorial on spikes.  From a structural point of view it is hard to imagine a more benign class of matroids. However, everything goes wrong for spikes.

Monday, November 16, 2015 — 4:15 PM EST

Title: Modifying the Lovász theta function for obtaining upper bounds on
the stability number

Friday, November 13, 2015 — 3:30 PM EST

Title: On the power of PPT-preserving and non-signalling codes

Tuesday, November 10, 2015 — 10:30 AM EST

Title: Large induced forests in subcubic and planar graphs

Monday, November 9, 2015 — 4:15 PM EST

Title: Low rank matrix recovery using Schatten-p quasi norm minimization

Friday, November 6, 2015 — 3:30 PM EST

Title: How many colors can be saved?

Wednesday, November 4, 2015 — 3:30 PM EST

Title: Generalized quadrangles III

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

Abstract: This week, we continue with our learning series on generalized quadrangles. We will discuss polarities, ovoids and spreads.

Tuesday, November 3, 2015 — 10:30 AM EST

Title: Brooks' theorem for matroids

Monday, November 2, 2015 — 4:15 PM EST

Title: On the minimum-cost chain-constrained spanning tree problem

Friday, October 30, 2015 — 3:30 PM EDT

Title: Improved Cheeger's inequalities

Wednesday, October 28, 2015 — 3:30 PM EDT

Title: Quantum walks II: spectral decomposition

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

Abstract:  This week, we continue with our learning series on quantum  
walks. Spectral decomposition is an important tool in algebraic graph  
theory. We will discuss its application in the study of continuous-time quantum walks.

Tuesday, October 27, 2015 — 10:30 AM EDT

Title: On the Barát-Thomassen-Conjecture

Monday, October 26, 2015 — 4:15 PM EDT

Title: ECDLP and Improved Baby-Step Giant-Step

Speaker: Randy Yee
Affiliation: University of Waterloo
Room: MC 6486

Abstract:

Friday, October 23, 2015 — 3:30 PM EDT

Title: Schubert varieties and inversion hyperplane arrangements

Wednesday, October 21, 2015 — 3:30 PM EDT

Title: Generalized quadrangles

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

Abstract:  We continue with our second installment of the learning  
series on generalized quadrangles.

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