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SUMMARY:Michael Wibmer (TU Graz)
DTSTART:20230525T073000Z
DTEND:20230525T083000Z
DTSTAMP:20260423T021216Z
UID:SiN/55
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/SiN/55/">Exp
 ansive endomorphisms of profinite groups</a>\nby Michael Wibmer (TU Graz) 
 as part of Symmetry in Newcastle\n\n\nAbstract\nÉtale algebraic groups ov
 er a field k are equivalent to finite groups with a continuous action of t
 he absolute Galois group of k. The difference version of this well-know re
 sult asserts that étale difference algebraic groups over a difference fie
 ld k (i.e.\, a field equipped with an endomorphism) are equivalent to prof
 inite groups equipped with an expansive endomorphism and a certain compati
 ble difference Galois action. In any case\, understanding the structure of
  expansive endomorphisms of profinite groups seems a worthwhile endeavor a
 nd that's what this talk is about.\n
LOCATION:https://researchseminars.org/talk/SiN/55/
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