Events - August 2018

Tuesday, August 14, 2018 — 3:00 PM EDT

John Sawatzky, Department of Pure Mathematics, University of Waterloo

"Fourier algebras"

Tuesday, August 14, 2018 — 2:00 PM EDT

Benjamin Anderson-Sackaney, Department of Pure Mathematics, University of Waterloo

"Fourier-Stieltjes algebras"

Tuesday, August 14, 2018 — 10:00 AM EDT

Renzhi Song, Department of Pure Mathematics, University of Waterloo

"Series-Parallel Posets and Polymorphisms"

The complexity of the retraction problem for series-parallel posets is known to be in P for those that satisfy the 4-crown condition. We will show how we can improve on this to show that it is in NL. Furthermore we will show that satisfying the 4-crown condition is equivalent to admitting Freese-McKenzie polymorphisms. This establishes an equivalence between all of properties mentioned above for series-parallel posets. 

MC 2009

Friday, August 3, 2018 — 2:00 PM EDT

David Urbanik, Department of Pure Mathematics, University of Waterloo

"Explicit Equations for Hyperelliptic Jacobians and Their Group Law"

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