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DTSTART:20250309T070000
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DTSTART;TZID=America/Toronto:20250516T153000
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URL:https://uwaterloo.ca/combinatorics-and-optimization/events/tutte-colloq
 uium-michael-borinsky
SUMMARY:Tutte colloquium-Michael Borinsky
CLASS:PUBLIC
DESCRIPTION:TITLE:Constraining moduli space cohomology by counting graphs\n
 \nSPEAKER:\n Michael Borinsky\n\nAFFILIATION:\n Perimeter Institute\n\nLOC
 ATION:\n MC 5501\n\nABSTRACT: In 1992\, Kontsevich defined complexes spann
 ed by graphs.\nThese \ncomplexes are increasingly prominent in algebraic 
 topology\,\ngeometric \ngroup theory and mathematical physics. For instan
 ce\, a 2021 theorem\nby \nChan-Galatius and Payne implies that the top-we
 ight cohomology of\nthe \nmoduli space of curves of genus g is equal to t
 he homology of a\nspecific \ngraph complex. I will present a new theorem 
 on the asymptotic growth \nrate of the Euler characteristic of this graph
  complex and explain\nits \nimplication on the cohomology of the moduli s
 pace of curves. The\nproof \ninvolves solving a specific graph counting p
 roblem.\n\n 
DTSTAMP:20260403T205820Z
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