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SUMMARY:Moduli spaces and graph complexes in algebra\, geometry and physic
 s
DTSTART:20260531T170000Z
DTEND:20260605T120000Z
DTSTAMP:20260418T174000Z
UID:indico-event-9665@indico.global
CONTACT:contact@swissmaprs.ch
DESCRIPTION:Speakers: Michael Borinsky (ETH Zürich - Institute For Theore
 tical Studies)\, Thomas Willwacher (ETH Zurich)\, Sam Payne (University of
  Texas at Austin)\, Karen Vogtmann (University of Warwick)\n\nThe moduli s
 pace of metric graphs MGg is a key object in geometric group theory\, alge
 braic geometry and quantum field theory. In particular\, the cohomology of
  various graph complexes may be understood geometrically as sheaf cohomolo
 gy on MGg. Recent advances have furthermore uncovered deep connections bet
 ween MGg and objects of central interest in neighboring areas of mathemati
 cs\, in particular the moduli space of Riemann surfaces Mg. Harer and Zagi
 er’s Euler characteristic computations from 1986 showed that Mg has a hu
 ge amount of nontrivial cohomology\, but few classes were explicitly known
 . The connection with MGg allowed Chan\, Galatius and Payne to find expone
 ntially many new cohomology classes through graph cohomology\, though they
  still only account for a small part of the total cohomology.\nSpeakers:\n
 \n\nAnton Alekseev\n\nPaul Balduf\n\nAlexander Berglund\n\n\nBenjamin Bruc
 k\n\nRicardo Campos\nSimone Hu\nNajib Idrissi\nSiddarth Kannan\nFlorian Na
 ef\nGeoffrey Powell\nBrent Pym\nRohini Ramadas\nJan Steinebrunner\nAlex Ta
 keda\nBenjamin Ward\nNathalie Wahl\nKonstantin Wernli\n\n\nhttps://indico.
 global/event/9665/
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LOCATION:SRS
URL:https://indico.global/event/9665/
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