Contact Info
Combinatorics & Optimization
University of Waterloo
Waterloo, Ontario
Canada N2L 3G1
Phone: 519-888-4567, ext 33038
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Tuesday, May 17, 2022 — 3:00 PM EDT
Title: Almost every matroid has a rank-3 wheel or rank-3 whirl as minor
| Speaker: | Jorn van der Pol |
| Affiliation: | University of Waterloo |
| Zoom: | http://matroidunion.org/?page_id=2477 or contact Shayla Redlin |
Abstract:
Many conjectures – but few results – exist for the statistical properties of large "random" matroids. For example, the question which matroids appear as a minor of almost every matroid has been settled for only a few matroids.
Thursday, May 19, 2022 — 1:00 PM EDT
Title: P-partition power sums
| Speaker: | Victor Wang |
| Affiliation: | University of British Columbia |
| Room/Zoom: | MC5479 or for Zoom link contact Logan Crew or Olya Mandelshtam |
Abstract:
The Hopf algebra of symmetric functions is spanned by several important bases, including by power sum symmetric functions, which encode the class values of the characters of the symmetric group under the Frobenius characteristic map.
Friday, May 20, 2022 — 3:30 PM EDT
Title: The Chvátal-Gomory procedure for integer SDPs with applications in combinatorial optimization
| Speaker: | Frank de Meijer |
| Affiliation: | Tilburg University |
| Location: | MC 5501 or please contact Emma Watson for Zoom link |
Abstract:
Semidefinite programs under the presence of integrality constraints are known as integer semidefinite programs (ISDPs). Since the combination of integrality and positive semidefiniteness leads to matrices that are highly structured, ISDPs have applications in several fields, including architecture and combinatorial optimization. In this project we consider the extension of the Chvátal-Gomory (CG) procedure, which is well-known for integer linear programming, to the class of ISDPs.
Tuesday, May 24, 2022 — 9:00 AM to Friday, May 27, 2022 — 4:30 PM EDT
A celebration of Goulden and Jackson's combined 90 years of insight and inspiration that have shaped the fields of algebraic and combinatorial enumeration.
Registration
To register, click here.
Monday, June 6, 2022 — 10:00 AM to Tuesday, June 7, 2022 — 5:00 PM EDT
AlCoVE aims to bring together researchers interested in algebraic combinatorics from around the world. Each talk will be 30 minutes and between talks, there will be casual social activities for spending time with your friends and making new friends.
To access the Zoom links, you must first register for the conference.
Registration
To register, click here.