2 papers
math.LO2025
Invariant uniformization
Alexander S. Kechris, Michael Wolman
Standard results in descriptive set theory provide sufficient conditions for a Borel set to admit a Borel uniformiz…
math.LO2025
Definable expansions on countable groups and countable Borel equivalence relations
Michael Wolman
We define and study expansion problems on countable structures in the setting of descriptive combinatorics. We consider both expansions on countable Borel equivalence relations and…