2006–2007 Erdős Colloquium:
Alexander Kechris
Set theory and dynamical systems

Speaker: Alexander Kechris, California Institute of Technology
Date and time: Monday, May 7, 2007, 4:00–5:00 p.m.
Location: Little Hall, Room 121
Refreshments: After the lecture, Little Hall, Room 339
Abstract
In this talk, I will give an introduction to some recent work in set theory, whose goal is a theory of complexity of classification problems in mathematics, and discuss its connections with aspects of dynamical systems and in particular rigidity phenomena in the context of ergodic theory.
About the speaker
Alexander Kechris received his Ph.D. at UCLA in 1972 under the direction of Yiannis Moschovakis. In 1974 he joined the Caltech faculty. He is the recipient of the 1978–82 Sloan Fellowship, a 2003 Guggenheim Fellowship and the 2003 Carol Karp Prize (Assoc. Symbolic Logic), and he holds an honorary doctorate from the University of Athens.