Title: Accounts of Set Size and the Axiom of Choice
Speaker: 申国桢（中山大学）
Time: Friday, May 22, 2026, 15:00-16:00
Venue：Mingde Building B201-1
Abstract:
We compare two accounts of set size in set theory without the axiom of choice: the first based on injections and the second on surjections. We then propose a new account of set size that has better properties than the previous two in choice-free settings.
