Is it possible to prove the non-completeness of the Borel-Lebesgue measure on $\mathbb{R}$ (restricted to the Borel $\sigma$-algebra) without the full axiom of choice, but still with Countable Choice ? It seems to be the case when I read Non-Borel sets without axiom of choiceNon-Borel sets without axiom of choice, but I was unable to really prove it.
Ed Dean
- 2.3k
- 2
- 18
- 32