Re: Zen: Dees - Redundant

From: Robert Owen (rowen@technologist.com)
Date: Mon Sep 20 1999 - 19:34:42 MDT


Joe E Dees wrote:

> Neither this, nor that, nor [neither this nor that], nor [both this and
> that].

Not required. The Boolean transform of nor [both this and that] which
is equivalent to not[this and that] is [not-this or not-that]. But this
is the inclusive OR, so it includes as a true case [not-this AND not-that].
But this readily transforms into not[this OR that] or neither this nor that,
which was explicitly stated.

=======================
Robert M. Owen
Director
The Orion Institute
57 W. Morgan Street
Brevard, NC 28712-3659 USA
=======================



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