Thursday, October 10, 2019

Thursday, October 10, 2019 — 1:00 PM EDT

Title: Quantum Colouring and Derangements

Speaker: Chris Godsil Affiliation: University of Waterloo Room: MC 5479

Abstract:

Work in quantum information has lead to the introduction of quantum colourings.

Thursday, October 10, 2019 — 3:00 PM EDT

Title: Scattering amplitudes and associahedra

Speaker: Hugh Thomas Affiliation: UQAM Room: MC 5417

Abstract:

The classic approach to scattering amplitudes sums a contribution from a (potentially very large) number of Feynman diagrams.

Thursday, October 10, 2019 — 4:00 PM EDT

Title: A Pseudoforest Analogue of the Strong Nine Dragon Tree Conjecture

Speaker: Logan Grout Affiliation: University of Waterloo Room: MC 5501

Abstract:

In 2016, Jiang and Yang proved the Nine Dragon Tree Conjecture, a strengthening of the classical arboricity result of Nash-Williams (1964). On the way to developing this proof, Fan, Lim Song, and Yang proved an analogous result for decomposing graphs into pseudoforests, which is a strengthening of Hakimi’s Theorem.

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