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Seminar on Reckoning

Countably compact groups without convergent sequences

Michael Hrušák
Instituto de matemáticas, Unidad Morelia, Universidad  Nacional Autónoma de México

 

Seminar on Reckoning
Wednesday, 10. July 2019 - 11:00 to 15:00

Institute of Mathematics CAS, Zitna 25, seminar room, 3rd floor, front building

In a joint work with J.van Mill, U.A. Ramos Garcia and S. Shelah we solve a longstanding problem of E. van Douwen by constructing, in ZFC, a countably compact topological group without non-trivial convergent sequences.