# Kyoto Operator Algebra Seminar

Organizers: Benoit COLLINS, Masaki IZUMI, Narutaka OZAWA.
Time and Location: 15:00 - 16:30 on Tuesday at RIMS 206
Seminar Description: This seminar features both research and introductory talks on topics in Operator Algebra, Noncommutative Geometry, Ergodic Theory, and Group Theory of various kinds (geometric, measure theoretic, functional analytic, etc.). The talks are informal and take between an hour and an hour and a half.
Useful Tips: How to Give a Good Colloquium. Advice on Giving Talks (Upgrade). Myths.
Memento: 2011  2012  2013  2014  2015 Spring/Summer

## 2015 Fall/Winter

 Sep. 08-11 Sci 3-110 Group Actions and Metric Embeddings Oct. 05-07 RIMS 111 Quantum fields and related topics Oct. 06 15:00 - 16:30 RIMS 206 Noriyoshi Sakuma (Aichi Kyoiku) Unimodality for free Lévy processes I will talk about recent developments of research of free infinitely divisible distributions based on joint work with T. Hasebe. Especially, some interesting distributional properties are founded comparing the classical probability. Oct. 20 15:00 - 16:30 RIMS 206 Narutaka Ozawa (RIMS) TBA Oct. 24-26 Myo-Ko Annual meeting on operator theory & operator algebra theory Nov. 09-11 RIMS 420 Research on structure of operators by order and geometry with related topics Nov. 10DT Seminar 15:00 - 16:30 Sci 6-609 Jeremie Brieussel (Montpellier) About the speed of random walk on solvable groups The speed of a random walk measures the average distance between the particle and its starting point. By Lee--Peres, for non-degenerate random walks on infinite groups, the speed is between $\sqrt{n}$ and $n$. By Amir--Virag, any regular function between $n^{3/4}$ and $n$ is the speed function of some random walk on some group. I will describe some solvable groups and some random walks on them with speed between $\sqrt{n}$ and $n^{3/4}$. Dec. 01 15:00 - 16:30 RIMS 206 TBA (tba) TBA

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