Re: Antwort: [math-fun] Floor function question

floor(x) = -ceiling(-x) ? hartmut.holzwart@allianz.de wrote:

I forgot: Additionally, the field has to be order complete as well! Then the reals are unique. My math gets rusty.

Remark: ceiling can be extended to the surreal numbers in the obvious way and then is an ordinal. I can't see an easy definition of floor in this case, though!

Cheers, Hartmut _______________________________________________ math-fun mailing list math-fun@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/math-fun