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DTSTART:20260308T070000
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DTSTART:20251102T060000
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DTSTART;TZID=America/Toronto:20261008T143000
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URL:https://uwaterloo.ca/combinatorics-and-optimization/events/algebraic-an
 d-enumerative-combinatorics-seminar-jun-yan
SUMMARY:Algebraic and Enumerative Combinatorics Seminar | Jun Yan\, Exact\n
 enumeration of lozenge tilings of a triangular region
CLASS:PUBLIC
DESCRIPTION:SPEAKER:\n Jun Yan\n\nAFFILIATION:\n University of Waterloo\n\n
 LOCATION:\n MC 5417\n\nABSTRACT: Tiling enumerations problems have fascin
 ating connections\nwith many other combinatorial problems involving perfec
 t matchings\,\nlattice paths\, and determinants. In this talk\, I will bri
 efly survey\nsome of the classical results and methods in this area. Then\
 , I will\npresent a new result enumerating lozenge tilings of a triangular
 \nregion. Interestingly\, the formula\, reminiscent of the famous\nKastele
 yn formula counting domino tilings of the rectangle\, contains\nroots of u
 nity and does not obviously output an integer.\n\nTHERE WILL BE A PRE-SEMI
 NAR PRESENTING RELEVANT BACKGROUND AT THE\nBEGINNING GRADUATE LEVEL START
 ING AT 1:30PM.
DTSTAMP:20261003T203944Z
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