C∗-ALGEBRAS ASSOCIATED TO GRAPHS OF GROUPS Contents 1. Introduction 1 2. Background 4 3. The graph of groups C∗-algebra 18 4
Geometric group theory, homework 2. Problem 1. Describe the Bass–Serre tree of Z ∗ Z. Problem 2. Find a sufficient and neces
PING-PONG PARTITIONS AND LOCALLY DISCRETE GROUPS OF REAL-ANALYTIC CIRCLE DIFFEOMORPHISMS, I: CONSTRUCTION
![Geometric group theory: Free group, Flexagon, Bass-Serre theory, Small cancellation theory, Dehn function, Building, Train track map | Amazon.com.br Geometric group theory: Free group, Flexagon, Bass-Serre theory, Small cancellation theory, Dehn function, Building, Train track map | Amazon.com.br](https://m.media-amazon.com/images/I/41-N5p%2Bv%2BjL._SR600%2C315_PIWhiteStrip%2CBottomLeft%2C0%2C35_SCLZZZZZZZ_FMpng_BG255%2C255%2C255.jpg)