Title: Quantum Colouring and DerangementsSpeaker: Chris Godsil Affiliation: University of Waterloo Room: MC 5479
Work in quantum information has lead to the introduction of quantum colourings.
Title: Scattering amplitudes and associahedraSpeaker: Hugh Thomas Affiliation: UQAM Room: MC 5417
The classic approach to scattering amplitudes sums a contribution from a (potentially very large) number of Feynman diagrams.
Title: A Pseudoforest Analogue of the Strong Nine Dragon Tree ConjectureSpeaker: Logan Grout Affiliation: University of Waterloo Room: MC 5501
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.