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DTSTART:19700329T010000
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CATEGORIES:Isaac Newton Institute Seminar Series
SUMMARY:Logarithmic intersection theory and enumerative ge
 ometry - Dhruv Ranganathan (University of Cambridg
 e)
DTSTART;TZID=Europe/London:20220726T160000
DTEND;TZID=Europe/London:20220726T170000
UID:TALK176795AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/176795
DESCRIPTION:A logarithmic structure on an algebraic variety eq
 uips it with\, among other things\, a natural stra
 tification. In the context of intersection theory\
 , this means that logarithmic structures select na
 tural principal component contributions in an inte
 rsection problem. The analysis of these principal 
 components has led to recent new directions in Gro
 mov-Witten theory and in the study of the cohomolo
 gy of the moduli space of curves. I will try to gi
 ve a tour of these problems and the tools we have 
 to analyze them\, focusing especially on geometry 
 related to the double ramification cycle in the mo
 duli space of curves. The talk will encompass work
  with Battistella\, Nabijou\, and Molcho\, as well
  as touch on independent work of Holmes\, Pandhari
 pande\, Pixton\, Schmitt\, and Schwarz
LOCATION:Seminar Room 2\, Newton Institute
CONTACT:
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