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DTSTART:20070311T020000
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BEGIN:VEVENT
DTSTAMP:20241114T084302
DTSTART;TZID=America/Detroit:20241125T160000
DTEND;TZID=America/Detroit:20241125T170000
SUMMARY:Lecture / Discussion:Classifying Hyperbolic Ergodic Stationary Measures on K3 Surfaces with Large Automorphism Groups
DESCRIPTION:Let X be a K3 surface. Consider a finitely supported probability measure $\mu$ on Aut(X) such that $\Gamma_{\mu} = \langle Supp(\mu)\rangle < Aut(X) is non-elementary. We do not assume that $\Gamma_{\mu}$ contains any parabolic elements. We study and classify hyperbolic ergodic $\mu$-stationary probability measures on X.
UID:129099-21862154@events.umich.edu
URL:https://events.umich.edu/event/129099
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Dynamics
LOCATION:East Hall - 3096
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20241122T082510
DTSTART;TZID=America/Detroit:20241125T160000
DTEND;TZID=America/Detroit:20241125T170000
SUMMARY:Workshop / Seminar:Graph orientations and Euler characteristics
DESCRIPTION:There is a fruitful interaction between quantum field theory and enumerative graph theory. In this talk\, we introduce half-edge labeled graphs\, their automorphism groups\, and even/odd orientability. We describe a few enumerative results as well as provide entirely combinatorial proofs of known sign formulas. To conclude\, we allude to applications of these results to quantum field theoretic partition functions and generating functions for the Euler characteristic of Kontsevich's graph complex.
UID:129386-21862605@events.umich.edu
URL:https://events.umich.edu/event/129386
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Mathematics
LOCATION:East Hall - 3866
CONTACT:
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