Subject:
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Re: nits! (that is, Nits factorial) (was re contacting Lego Australia)
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Newsgroups:
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lugnet.off-topic.fun
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Date:
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Mon, 11 Mar 2002 10:33:16 GMT
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Viewed:
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2679 times
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In lugnet.off-topic.fun, Larry Pieniazek writes:
> In lugnet.off-topic.fun, Ross Crawford writes:
> > In lugnet.off-topic.fun, Larry Pieniazek writes:
>
> > > Sorry, no. The two articles you cite clearly show that the Gamma function is
> > > an EXTENSION of factorial to reals and complex numbers... NOT that factorial
> > > itself works with reals.
> >
> > Double factorial equation (8) clearly states "Similarly, the double factorial
> > can be extended to complex arguments as: [eqn image that I can't be bothered
> > linking to]", similarly Factorial eqn (7).
> >
> > Which by my book means these extensions *use* the gamma funtion, but *are*
> > valid extensions. YMMV.
>
> It does indeed vary.
>
> By my book it's clear as day that an extension of something means the
> original something *doesn't* apply in the extended area.
Fine, Lar, but the eqn I cited defines z!! for all complex z[1], so
3.141592654!! *is* a valid expression, whether you wanna call it double
factorial or not.
ROSCO
[1] In fact, it doesn't - it erroneously uses x on the right side of the
equation, and z on the left. I've already notified Eric about the error 8?)
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