Re: [FWP] Factorial Elegance

[abigail@foad.org]

On Fri, Sep 15, 2000 at 11:37:52AM -0500, Tim Ayers wrote:
> 
> You lost me here. I am not a mathematician. I learned enough math so
> they would give me my diploma and got the hell out of there. But I
> thought factorials are not defined for N < 0. So I thought that
> returning 'undef' if $x < 0 would be okay. I'm definitely curious.


Yeah, you are right. The factorial function can be generalized to all
complex numbers, except for negative integers (z! = infinity for negative
integers z).

Ref: http://mathworld.wolfram.com/Factorial.html


Abigail

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