Alexander S. Kechris
Alexander S. Kechris (left)
Born (1946-03-23) March 23, 1946 (age 78)
Scientific career
InstitutionsCalifornia Institute of Technology
Doctoral advisorYiannis N. Moschovakis
Doctoral studentsJack Lutz

Alexander Sotirios Kechris (Greek: Αλέξανδρος Σωτήριος Κεχρής; born March 23, 1946) is a set theorist and logician at the California Institute of Technology.


Kechris has made contributions to the theory of Borel equivalence relations and the theory of automorphism groups of uncountable structures. His research interests cover foundations of mathematics, mathematical logic and set theory and their interactions with analysis and dynamical systems.

Kechris earned his Ph.D. at UCLA in 1972 under the direction of Yiannis N. Moschovakis, with a dissertation titled Projective Ordinals and Countable Analytic Sets. During his academic career he advised 23 PhD students and sponsored 20 postdoctoral researchers.

In 2012, he became an Inaugural Fellow of the American Mathematical Society.[1]


Selected publications


  1. ^ List of Fellows of the American Mathematical Society, retrieved 2013-01-27.
  2. ^ "ICM Plenary and Invited Speakers since 1897". Archived from the original on 2017-11-24. Retrieved 2017-04-21.
  3. ^ "ASL Gödel Lecturers". Archived from the original on 2016-10-21. Retrieved 2017-04-21.
  4. ^ "ASL Karp Prize Recipients". Archived from the original on 2017-03-06. Retrieved 2017-04-21.
  5. ^ 2004 Tarski Lectures
  6. ^ Weiss, Benjamin (2014). "Review: Global aspects of ergodic group actions by Alexander S. Kechris" (PDF). Bull. Amer. Math. Soc. (N.S.). 51 (1): 163–168. doi:10.1090/s0273-0979-2013-01422-8.