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SUMMARY:Stéphane Sabourau (Université Parsi-Est Créteil)
DTSTART:20201006T140000Z
DTEND:20201006T150000Z
DTSTAMP:20260423T035407Z
UID:Geometry/12
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/Geometry/12/
 ">Geometric semi-norms in homology</a>\nby Stéphane Sabourau (Université
  Parsi-Est Créteil) as part of Pangolin seminar\n\n\nAbstract\nThe simpli
 cial volume of a simplicial complex is a topological invariant related to 
 the growth of the fundamental group\, which gives rise to a semi-norm in h
 omology. In this talk\, we introduce the volume entropy semi-norm\, which 
 is also related to the growth of the fundamental group of simplicial compl
 exes and shares functorial properties with the simplicial volume. Answerin
 g a question of Gromov\, we prove that the volume entropy semi-norm is equ
 ivalent to the simplicial volume semi-norm in every dimension. Joint work 
 with I. Babenko.\n
LOCATION:https://researchseminars.org/talk/Geometry/12/
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