groups and dynamics (abstract)

Texas A&M University, Department of Mathematics, 216 Milner Hall, 13th of April 2005, 3:00-3:50

Groups and Dynamics Seminar

Asymptotic expanders and Ramanujan graphs

Rostislav Grigorchuk of Texas A&M University

We will define the notions of asymptotic expanders and asymptotic Ramanujan graphs and discuss their construction by using automaton groups (that is groups generated by finite automata).