比利时vs摩洛哥足彩
,
university of california san diego
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math 243 - functional analysis seminar
anush tserunyan
uiuc
a pointwise ergodic theorem for quasi-pmp graphs
abstract:
we prove a pointwise ergodic theorem for locally countable ergodic quasi-pmp (nonsingular) graphs, which gives an increasing sequence of borel subgraphs with finite connected components, averages over which converge a.e. to the expectations of $l^1$-functions. this can be viewed as a random analogue of pointwise ergodic theorems for group actions: instead of taking a (deterministic) sequence of subsets of the group and using it at every point to compute the averages, we allow every point to coherently choose such a sequence at random with a strong condition that the sets in the sequence determine aconnected subgraph of the schreier graph of the action.
host: adrian ioana
november 14, 2018
2:00 pm
ap&m 6402
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