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Speed of random walks
If you have a question about this talk, please contact Julia Blackwell.
How fast does a random walk on a graph escape from its starting point? In this survey talk, I will consider this question in a variety of settings:
Simple RW on Galton-Watson trees, where speed can be computed
RW on lamplighter groups: The Kaimanovich-Vershik Theorem
Which escape exponents are possible for RW on groups?
Benjamini-Lyons-Schramm conjecture: percolation preserves speed of RW
The effect of bias for RW on trees and on groups
Surprisingly, the expected distance from the starting point can be non-monotone, even when starting at the stationary distribution and the walk has holding probability 1/2.
*The square root lower bound on groups: Can it be proved beyond the inverse spectral gap?
This talk is part of the Probability series.
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Other listsCambridge Language Sciences Life Sciences and Society Seminars Wednesday HEP-GR Colloquium
Other talksInfectious Disease Radiotherapy of the pituitary macrotumours, a comparison of two protocols Annual General Meeting The Drama of Intellectual Life: Performativity in the Study of Ideas The 2015 Annual Risk Summit Ramanujan Graphs and Finite Free Convolutions of Polynomials