Expander graphs - where Combinatorics and Algebra compete and cooperate.

Avi Wigderson
Institute for Advanced Studies, Princeton
School of Mathematics

Expansion of graphs can be given equivalent definitions in combinatorial and algebraic terms. This is the most basic connection between combinatorics and algebra illuminated by expanders and the quest to construct them. The talk will survey how fertile this connection has been to both fields, focusing on recent results. ~ ~

Presentation (PowerPoint File)

Back to Automorphic Forms, Group Theory and Graph Expansion