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UID:20250731T144952EDT-6143gUR923@132.216.98.100
DTSTAMP:20250731T184952Z
DESCRIPTION:Title: A Coarse Geometric Obstruction to Cubulation\n\nAbstract
 : A major theme of geometric group theory over the past few decades has be
 en to cubulate groups\, i.e.\, construct proper cocompact actions on CAT(0
 ) cube complexes. Such actions often yield algebraic consequences (e.g. su
 bgroup separability\, biautomaticity\, aTmenability)\, and a group is ofte
 n obstructed from cubulation by not having one of these algebraic properti
 es. Taking a different\, geometric point of view\, we define a class of 'p
 oisonous' spaces -- richly branching flats (RBFs) -- and we show that grou
 ps containing RBFs are not quasi-isometric to CAT(0) cube complexes and th
 us not cubulated. We present some applications to free-by-cyclic groups an
 d tubular groups. This work is joint with Harry Petyt.\n
DTSTART:20240911T200000Z
DTEND:20240911T210000Z
LOCATION:Room 920\, Burnside Hall\, CA\, QC\, Montreal\, H3A 0B9\, 805 rue 
 Sherbrooke Ouest
SUMMARY:Zachary Munro (Technion - Israel Institute of Technology)
URL:/mathstat/channels/event/zachary-munro-technion-is
 rael-institute-technology-359452
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