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DTSTART:20260308T070000
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DTSTART:20251102T060000
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DTSTART;TZID=America/Toronto:20260723T143000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20260723T153000
URL:https://uwaterloo.ca/combinatorics-and-optimization/events/algebraic-an
 d-enumerative-combinatorics-seminar-alexandre
SUMMARY:Algebraic and Enumerative combinatorics seminar -Alexandre Zotine-A
 \npipe dream framework for orbital varieties of type M² = 0
CLASS:PUBLIC
DESCRIPTION:SPEAKER:\n Alexandre Zotine\n\nAFFILIATION:\n University of Saa
 rland\n\nLOCATION:\n MC 5479\n\nABSTRACT: An orbital scheme D of type M²
  = 0 is the closure of a\nconjugacy class of some set of n × n upper tria
 ngular matrices which\nare nilpotent of order 2. The geometric components 
 of the orbit scheme\nare called orbital varieties of type M² = 0\, and re
 cently their\ninvariants have been connected to statistical mechanics. In 
 the\nsetting of M² = 0\, there are combinatorial methods for studying the
 se\ninvariants via the action of the Borel group of upper triangular\ninve
 rtible matrices. In this talk\, we introduce a new pipe dream\nframework f
 or computing and understanding these invariants. This is\njoint work with 
 Megumi Harada\, Illya Kierkosz\, Allen Knutson\, Emma\nNaguit\, Brett Nass
 erden\, Naveena Rangunathan\, and Adam van Tuyl.\n\nTHERE WILL BE A PRE-SE
 MINAR PRESENTING RELEVANT BACKGROUND AT\nBEGINNING GRADUATE LEVEL STARTING
  AT 1:30PM IN MC 5417.
DTSTAMP:20260717T221623Z
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