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SUMMARY:Carlangelo Liverani (U Roma „Tor Vergata“)
DTSTART:20210209T130000Z
DTEND:20210209T143000Z
DTSTAMP:20260423T021353Z
UID:BODS/9
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/BODS/9/">Mea
 surements in Dynamical Systems</a>\nby Carlangelo Liverani (U Roma „Tor 
 Vergata“) as part of Bremen Online Dynamics Seminar\n\n\nAbstract\nVery 
 often a measurement of a physical system takes the form of a finite\ntime 
 average for some observable. For infinite time averages Birkhoff's\ntheore
 m classifies all the possible outcomes in terms of the invariant\nmeasures
  of the system. The study of the\, much more realistic\, finite\ntime aver
 ages is equivalent to investigating at which speed the limit is\nattained.
  This problem is only partially understood\, essentially we\nunderstand fe
 w special cases. Yet\, our current knowledge shows that the\nbehaviour dep
 ends drastically from the properties of the system. In the\nstudy of such 
 a problem functional analysis\, probability theory\, and\ngeometry play ma
 jor roles. I will attempt to give an overview of the\nsubject.\n\nThis is 
 a joint event with the mathematical colloquium at the\nUniversity of Breme
 n\n
LOCATION:https://researchseminars.org/talk/BODS/9/
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