Re: Compression test on permutations

Willem <willem@xxxxxxxx> writes:
erpy wrote:
) Yes, I was reading that around. Still, sometimes the zero is treated as
) a number, while other times is treated as the meaning of "no number at
) all", as a placeholder to say "there is no number here, really"....which
) doesn't look..."consistent".

In the case of factorials it's completely consistent. The factorial
of 1 is the product of 1 number. The factorial of 5 is the product of 5
numbers. So logically, the factorial of 0 is the product of 0 numbers.

And the product of 0 numbers is 1. That's entirely consistent
with the rest of arithmetic. (a^0 = 1, for example.)

Phil
--
"Home taping is killing big business profits. We left this side blank
so you can help." -- Dead Kennedys, written upon the B-side of tapes of
/In God We Trust, Inc./.
.

Relevant Pages

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