# New Science Discovery: Perl Idiots Remain Idiots After A Decade!New Science Discovery: Per... - Page 2

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## Re: New Science Discovery: Perl Detractors Remain Idiots After A Decade

No, s/h/it is just an acephalic troll with delusions of adequacy.

Don't confuse the google pest with facts.

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Shmuel (Seymour J.) Metz, SysProg and JOAT  <http://patriot.net/~shmuel

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## Re: New Science Discovery: Perl Detractors Remain Idiots After A Decade

Another way to put it is to say that Xah is a legend in his
own mind.

## Re: New Science Discovery: Perl Idiots Remain Idiots After A Decade!New Science Discovery: Perl Idiots Remain Idiots After A Decade!

On 3/12/2012 12:27, Albert van der Horst wrote:

You may see it this way:
Def1. An operator +:SxS->S is left-associative iff
a+b+c = (a+b)+c for all a,b,c in S.
Def2. An operator +:SxS->S is right-associative iff
a+b+c = a+(b+c) for all a,b,c in S.
Def3. An operator +:SxS->S is associative iff it is both left and
right-associative.

Kiuhnm

## Re: New Science Discovery: Perl Idiots Remain Idiots After A Decade!New Science Discovery: Perl Idiots Remain Idiots After A Decade!

Kiuhnm  <kiuhnm03.4t.yahoo.it> wrote:

I know, but what the mathematicians do make so much more sense:
(a+b)+c = a+(b+c)    definition of associative.
Henceforth we may leave out the brackets.

Don't leave out the brackets if the operators if the operators is
not associative.

P.S. There is no need for the operators to be SxS->S.
For example a b c may be m by n, n by l, l by k matrices respectively.

Groetjes Albert

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Albert van der Horst, UTRECHT,THE NETHERLANDS
Economic growth -- being exponential -- ultimately falters.
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## Re: New Science Discovery: Perl Idiots Remain Idiots After A Decade!New Science Discovery: Perl Idiots Remain Idiots Af

Not really; Mathematical notation is a matter of convention, and the
conventions owe as much to History as they do to logical necessity.
The conventions aren't even the same from author to author, e.g.,
whether "field" implies Abelian.

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Shmuel (Seymour J.) Metz, SysProg and JOAT  <http://patriot.net/~shmuel

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