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From: "Alexandre E. Kopilovitch" <aek@VB1162.spb.edu>
Newsgroups: comp.lang.ada
Subject: Re: In-Out Parameters for functions
Date: Wed,  4 Feb 2004 06:01:00 +0300 (MSK)
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	from Hyman Rosen at Tue, 03 Feb 2004 09:06:52 -0500
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Date: 2004-02-04T06:01:00+03:00

Hyman Rosen wrote:

> > + is commutative
>
> Mathematics went beyond dogmatic statements like that many years ago.
Very interesting information. May I ask you for a couple of references? I mean
authoritative mathematical books where plus sign (+, without any modifications)
denotes some non-commutative operation.

And also, if the value of "pi" or "e" constant is somehow changed recently
(or if they are no longer constants) - in modern mathematics - then please
tell us that.



Alexander Kopilovitch                      aek@vib.usr.pu.ru
Saint-Petersburg
Russia