Filippo Calderoni : The bi-embeddability relation for countable torsion abelian groups

Posted by Dima Sinapova , part of the Logic Seminar.

At

March 13, 2018, 3:30 p.m.

In

SEO 427

Abstract

In this talk we show how to use the Ulm theory to prove that the bi-embeddability and isomorphism relations for countable torsion abelian groups are incomparable up to Borel reducibility. This is joint work with Simon Thomas.