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SUMMARY:From group actions and metrics to singularities and all the way ba
 ck
DTSTART:20230208T130000
DTEND:20230208T140000
DTSTAMP:20260925T125348Z
UID:b799f194ac3e6cfdb19a75a90f1ab8dcb02100b65a6cf49ae65e42d2
CATEGORIES:Conferences - Seminars
DESCRIPTION:Lukas Braun\, Uni. Freiburg\, GE \nSeminar in Mathematics\nAbs
 tract: In this talk\, I will explain how certain singularities arise from 
 very elementary considerations encountered in everyday life. Reasonably en
 larging this realm of singularities\, we can keep some of their good prope
 rties. This in turn leads to a deeper understanding of the underlying elem
 entary concepts such as group actions and metrics. In the end\, the invest
 igation of the fundamental groups of our singular spaces leads to degenera
 te (or 'odd') Riemannian metrics\, which may fail to measure angles but st
 ill allow to measure distances everywhere. Particularly interesting are th
 e flows of the corresponding 'odd' vector fields\, which generalize usual 
 nonsingular vector fields.\n\n 
LOCATION:MA A1 10 https://plan.epfl.ch/?room==MA%20A1%2010 https://epfl.zo
 om.us/j/69634976328
STATUS:CONFIRMED
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