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UID:20260721T213551EDT-3601e482oE@132.216.98.100
DTSTAMP:20260722T013551Z
DESCRIPTION:Title: Big fiber theorems and ideal-valued measures in symplect
 ic topology.\n\nAbstract: In various areas of mathematics there exist 'big
  fiber theorems'\, these are theorems of the following type: 'For any map 
 in a certain class\, there exists a 'big' fiber'\, where the class of maps
  and the notion of size changes from case to case.\n	\n	We will discuss thre
 e examples of such theorems\, coming from combinatorics\, topology and sym
 plectic topology from a unified viewpoint provided by Gromov's notion of i
 deal-valued measures.We adapt the latter notion to the realm of symplectic
  topology\, using an enhancement of Varolgunes’ relative symplectic cohomo
 logy to include cohomology of pairs. This allows us to prove symplectic an
 alogues for the first two theorems\, yielding new symplectic rigidity resu
 lts.Necessary preliminaries will be explained.The talk is based on a joint
  work with Adi Dickstein\, Leonid Polterovich and Frol Zapolsky.\n\nSite w
 eb : http://www.math.tau.ac.il/~sarabt/zoominar/\n
DTSTART:20211022T131500Z
DTEND:20211022T144500Z
SUMMARY:Yakov Eliashberg (Stanford)
URL:https://www.mcgill.ca/mathstat/channels/event/yakov-eliashberg-stanford
 -334240
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