[Haskell-cafe] 0/0 > 1 == False

Benja Fallenstein benja.fallenstein at gmail.com
Thu Jan 10 03:48:51 EST 2008


Hi Mitar,

On Jan 10, 2008 9:22 AM, Mitar <mmitar at gmail.com> wrote:
> I understand that proper mathematical behavior would be that as 0/0 is
> mathematically undefined that 0/0 cannot be even compared to 1.

My understanding is that common mathematical practice is that
comparing an undefined value to anything (including itself) always
yields false; "x /= x" is sometimes used to formalize "x is
undefined."

If you have access to JSTOR, this article contains an overview of
different fields' perspectives on dealing with undefinedness:

http://links.jstor.org/sici?sici=0022-4812(199009)55%3A3%3C1269%3AAPFVOC%3E2.0.CO%3B2-T

- Benja


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