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DTSTART:20260308T070000
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DTSTART:20251102T060000
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DTSTART;TZID=America/Toronto:20260402T143000
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URL:https://uwaterloo.ca/combinatorics-and-optimization/events/algebraic-an
 d-enumerative-combinatorics-seminar-hadleigh
SUMMARY:Algebraic and enumerative combinatorics seminar - Hadleigh\nFrost-N
 ested nestings\, Moment-Cumulant relations and the Combinatorics\nof the C
 osmos
CLASS:PUBLIC
DESCRIPTION:SPEAKER:\n Hadleigh Frost\n\nAFFILIATION:\n Institute for Advan
 ced Study\n\nLOCATION:\n MC 5417\n\nABSTRACT: Cosmological correlation fu
 nctions probe the quantum\norigins of structure in the universe and are a 
 prototype for many\ncalculations in physics. I will share recent work on t
 he complexes\,\nfans and polytopes associated to these functions based on\
 narXiv:2602.21194 and ongoing work. Two structures lie at the heart of\nth
 is story: (1) incidence relations between chains and anti-chains\,\n(2) a 
 notion of \"nested sets of nested sets\". Both structures can be\nstudied 
 for an arbitrary lattice\, but building sets of the boolean\nlattice are m
 y main motivation.\n\nTHERE WILL BE A PRE-SEMINAR PRESENTING RELEVANT BAC
 KGROUND AT THE\nBEGINNING GRADUATE LEVEL STARTING AT 1:30PM.
DTSTAMP:20260604T111524Z
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