Date: Jul 7, 2006 4:46 PM Author: Toni Lassila Subject: Re: How many real numbers are there? On 7 Jul 2006 13:30:05 -0700, "Nathan" <email@example.com> wrote:
>Mike Deeth wrote:
>> It's well-known that a countable union of finite sets is countable.
>Nope! You said you were working in ZF. This requires AC.
No it doesn't.