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Re: [mizar] How to search for a lemma?
On Tue, 18 Mar 2003, Freek Wiedijk wrote:
> where < is the order of the ordered field F. There are many
> non-Archimedean ordered fields, but I think that the field of
> the real numbers is the unique Archimedean complete ordered
> field.
It's also true that every complete ordered field is Archimedian.
{If not, the set of integers has an upper bound, hence a least upper
bound, say x. But then, easily, x -1 is also an upper bound of Int,
contradicting leastness.}
--Bob Solovay