加载中…
We prove that, in Zermelo–Fraenkel set theory with the axiom of Foundation removed, the statement that every vector space has a basis implies the Axiom of Choice, concluding that the classical equivalence between and the existence of bases does not require the Axiom of Foundation. More specifically, we prove that if every vector space over a field of characteristic zero has a basis, then holds. This result extends to set theory with atoms.

生成讲解博客的中文版本

生成AI智能校验的中文版本