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Home » UC Berkeley Colloquium: Chip firing, root systems, permutohedra, and Coxeter arrangements

Seminar

UC Berkeley Colloquium: Chip firing, root systems, permutohedra, and Coxeter arrangements October 26, 2017 (04:10 PM PDT - 05:00 PM PDT)
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Location: 60 Evans Hall
Speaker(s) Alexander Postnikov (Massachusetts Institute of Technology)
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The abelian sandpile model (also known as the chip firing game) is a simple dynamical system with surprisingly rich and nontrivial structure. We discuss a version of this game for root systems, which has even more mysterious structure than the classical chip firing. This study is closely linked with combinatorics of convex (and nonconvex) polytopes, such as permutohedra, and affine Coxeter arrangements.  Joint work with Pavel Galashin, Sam Hopkins, and Thomas McConville.

You can also find the talk information here:

http://events.berkeley.edu/index.php/calendar/sn/math.html?event_ID=112819&date=2017-10-26&filter=Secondary%20Event%20Type&filtersel= 

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