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Re: Unwanted Recursion

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ClearAll@p
SetAttributes[p, {Flat, OneIdentity}]
p[a_] := a
p[a]

a

Bobby

On Wed, 06 Jul 2011 04:39:33 -0500, Casorati <casorati@f-m.fm> wrote:

> I'm trying to define an anti-commutative algebra in Mathematica.
> Here I will show only a minimal example to demonstrate my point.
> The product of two elements a^b should be give by p[a,b] so I
> make p flat:
>
> SetAttributes[p, {Flat}]
>
> But now I want p[a] to reduce to a.
> Such a  rule would make other rules much simpler but when I define
>
> p[a_] := a
>
> the expression p[a] causes an infinite recursion. I get the message
>
> $IterationLimit::itlim: Iteration limit of 4096 exceeded.
>
> I have similar problems with p[]:=1 which makes mathematica puts
> ones into the p : p[a]=p[a,a]=p[1,1,...,a] .
>
> How can I solve this problem?
>
>


-- 
DrMajorBob@yahoo.com

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Re: Unwanted Recursion DrMajorBob <btreat1@austin.rr.com> - 2011-07-07 11:48 +0000
  Re: Unwanted Recursion Kambis Veschgini <k.veschgini@thphys.uni-heidelberg.de> - 2011-07-08 08:58 +0000

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