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DTSTART:20260308T070000
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DTSTART:20251102T060000
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DTSTART;TZID=America/Toronto:20260917T143000
SEQUENCE:0
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URL:https://uwaterloo.ca/combinatorics-and-optimization/events/characters-r
 ook-monoid
SUMMARY:Characters of the rook monoid
CLASS:PUBLIC
DESCRIPTION:SEMINAR: Algebraic and Enumerative Combinatorics Seminar\nDATE:
  Thursday\, September 17\, 2026\nTIME: 2:30 PM\nLOCATION: MC 5417\nSPEAKER
 : Mike Zabrocki\nAFFILIATION: York University\nTITLE: Characters of the ro
 ok monoid\nABSTRACT:\n\nThe partial permutations form a monoid known in di
 fferent contexts as\neither the “symmetric inverse semigroup” or the 
 “rook monoid.”\nIn this talk I will define a family of symmetric funct
 ions that\nevaluate to the character values of the irreducible representat
 ions of\nthe monoid. The basis also connects to the representation theory 
 of\nthe Schur-Weyl duality with the “propagating partition algebra.”\n
 Moreover\, the structure coefficients of this basis interpolate between\nt
 he Kronecker coefficients and the Littlewood-Richardson coefficients\nand 
 we use it to develop some of the combinatorics of the connection.\n\nThis 
 is joint work with Rosa Orellana and Alex Wilson.\n\nThere will be a pre-s
 eminar presenting relevant background at\nbeginning graduate level startin
 g at 1:30pm in MC 5417.\n\n 
DTSTAMP:20260917T211031Z
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