Title: Interpretations of the strong Arnold hypothesisSpeaker: Chris Godsil Affiliation: University of Waterloo Room: MC 6486
Abstract: I will discuss two interpretations of the strong Arnold hypothesis, indicating connections to bounds on sizes of cocliques, and to embedding graphs in quadrics.
Title: Universal Newton MethodSpeaker: Yurii Nesterov Affiliation: CORE/INMA UCL, Belgium Room: MC 5501
Title: On the Douglas-Rachford algorithmSpeaker: Heinz Bauschke Affiliation: University of British Columbia Room: MC 5501
The Douglas-Rachford algorithm is a popular splitting method for finding a minimizer of the sum of two convex (possibly nonsmooth) functions; or, more generally, a zero of the sum of two maximally monotone operators.
Title: On excluded minors for real-representabilitySpeaker: Rutger Campbell Affiliation: University of Waterloo Room: MC 5479
We show that any real representable matroid is a minor of an excluded-minor (for real-representability) that is complex-representable.
Title: Non positive eigenvalues and cographsSpeaker: John Sinkovic Affiliation: University of Waterloo Room: MC 6486