Negative =/= Not ?

Ian Goddard (igoddard@netkonnect.net)
Fri, 19 Jun 1998 04:25:42 -0400


At 10:35 AM 6/19/98 Gerhard Kessell-Haak wrote:

>At 03:07 AM 6/18/98 -0400, Daniel Fabulich wrote:
>
>>-A is zero, or should be. But if A = -A, then A + -A = A + A = 0.

>
>...you are making the error of equating the operator '-' with 'not'.

IAN: It's an interesting area of inquiry:
does the "-" negative notion equate 100%
with the "-" logical not notion? What's
your case that "negative =/= not"?

On another topic... in my last
post I stated (and typeoed):

> A B
> A 0 -
> B - 0
>
>
> A B
> A + 0
> B 0 +

The second matrix should read:

> A B
> A 0 +
> B + 0

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