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[MUG] Re: consistency
| [MUG] Re: consistency |
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Author: Maple Group
Posted: 04/02/2000 13:57:48 GMT
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>> From: Maple Group
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Date: Wed, 2 Feb 2000 15:39:26 +0000
From: "Dr Francis J. Wright"
To:
Subject: consistency
I think that treating functions like variables, which is essentially
what you are doing here, is generally a bad idea, partly because of the
kind of problems that you indicate above. I suggest an approach along
the following lines using "assume", which is more algebraic than your
approach and should be invariant under changes of Maple's choice of
variable ordering:
> signum(d-h);
-signum(-d + h)
> assume(d>h);
> signum(d-h);
1
(I used Maple V R5.1 here.)
Francis
--
Dr Francis J. Wright (Senior Tutor for Mathematics)
School of Mathematical Sciences | mailto:
Queen Mary & Westfield College | tel: (020) 7882 5453 (direct)
University of London | fax: (020) 8981 9587 (dept.)
Mile End Road, London E1 4NS, UK | http://www.maths.qmw.ac.uk/~fjw/
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Date: Wed, 2 Feb 2000 14:40:27 -0600
From: Herman Jaramillo
To:
Subject: consistency
Thank you all for your responses.
They were good help.
Herman.
--
Herman Jaramillo phone: 713-689-6503
Research Geophysicist fax : 713-689-6100
Baker Hughes (Western Geophysical) email:
3600 Briarpark Drive (77042-5275)
P.O. Box 2469
Houston, Texas 77252-2469
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