Unwanted Recursion
- To: mathgroup at smc.vnet.net
- Subject: [mg120021] Unwanted Recursion
- From: Casorati <casorati at f-m.fm>
- Date: Wed, 6 Jul 2011 05:39:33 -0400 (EDT)
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?
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