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SUMMARY:Fit systolic groups\, exactly - Damian Osajda (Københavns Univers
 itet (University of Copenhagen))
DTSTART:20250902T143000Z
DTEND:20250902T153000Z
UID:TALK233644@talks.cam.ac.uk
DESCRIPTION:We prove that a class of systolic complexes (that is\, complex
 es with a simplicial non-positive curvature) satisfy Yu's property A\, a c
 oarse geometric property implying e.g. coarse embeddability into a Hilbert
  space. It follows that groups acting properly on such complexes are exact
 \, or equivalently\, boundary amenable. As a consequence\, groups from a c
 lass containing all large-type Artin groups\, as well as all finitely pres
 ented graphical C(3)-T(6) small cancellation groups are exact. We use the 
 &Scaron\;pakula-Wright combinatorial criterion for proving Property A. Thi
 s is joint work with Mart&iacute\;n Blufstein\, Victor Chepoi\, and Huaita
 o Gui.
LOCATION:Seminar Room 1\, Newton Institute
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