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DTSTAMP:20261107T172252Z
SUMMARY:Analysis and Dynamics seminar: Raz Slutsky (University of Oxford)
DESCRIPTION:Speaker: Raz Slutsky (Oxford)\nTitle: Random sparsification\, t
 orsion in homology\, and fixed price\nAbstract: Given a complicated geomet
 ric object\, we often want to simplify it without losing information about
  the structure we are interested in. In this talk\, I will describe a meth
 od for doing this by combining a random sparse set with a deterministic on
 e\, gaining some of the advantages of both. We will then see how this idea
  can be used to show that torsion in the first homology of higher-rank lat
 tices grows subexponentially\, answering a question of Abért\, Gelander\,
  and Nikolov and confirming the degree-one case of several conjectures. We
  will also use the same principle to give a new general criterion for a dy
 namical property known as fixed price one\, which applies to a broad class
  of groups.
URL:https://www.imperial.ac.uk/events/215185/analysis-and-dynamics-seminar-
 raz-slutsky-university-of-oxford/
DTSTART;TZID=Europe/London:20261112T130000
DTEND;TZID=Europe/London:20261112T140000
LOCATION:410\, Huxley Building\, South Kensington Campus\, Imperial College
  London\, London\, SW7 2AZ\, United Kingdom
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