Friday, January 24
Date: Time: 4:00 pm–4:50 pm Location: Avery Hall
In 1974, Shelah proved that Whitehead’s problem (a proposed characterization of free abelian groups) was not decidable in ZFC (the usual axioms of set theory, together with the axiom of choice). With his proof, powerful set-theoretic methods …
This event originated in Math Colloquia.