*Date: *Tuesday, January 21, 2020 at 2:00 p.m. (14:00) Eastern Standard Time
*Speaker: *Matjaz Konvalinka, University of Ljubljana
*Title:* The first bijective proof of the ASM theorem
*Zoom Link: *https://wpi.zoom.us/j/870427125 Join Meeting ID: 870-427-125
*Abstract: * Alternating sign matrices (ASMs) were introduced by Robbins
and Rumsey in the early 1980s. Together with Mills they conjectured an
enumerative formula for the number of ASMs of size n x n, which was proved
independently by Zeilberger and Kuperberg about 10 years later. In this
talk, I will present the first bijective proof of this result. A crucial
part is played by signed sets and sijections (bijections on signed sets).
This is a joint project with Ilse Fischer.
*Bio:* Matjaž Konvalinka works in enumerative and algebraic combinatorics.
He received his Ph.D. at the Massachusetts Institute of Technology under
Igor Pak, and is now a Professor at the University of Ljubljana, Slovenia.
Together with Roger Behrend and Ilse Fischer, he was the recipient of the
2019 Robbins Prize awarded by the Americal Mathematical Society. He is one
of the Editors-in-Chief of Annals of Combinatorics.
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*Jo*
Jo Ellis-Monaghan
Chair, Department of Mathematics and Statistics (on sabbatical 2019-2020)
Editor-in-Chief, PRIMUS
Saint Michael's College
One Winooski Park
Colchester, VT 05439
office: Jeanmarie 279
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