RE : probleme with rule




> -----Message d'origine-----
> De : maxima-bounces at math.utexas.edu 
> [mailto:maxima-bounces at math.utexas.edu] De la part de Richard Fateman
> Envoy? : dimanche 8 octobre 2006 17:40
> ? : 'laurent couraud'; maxima at math.utexas.edu
> Objet : Re: [Maxima] probleme with rule
> 
> 
> It seems to me that since "a" is not binary, a^2 is 
> transformed to a^2. Then tellsimp is called again on a^2, 
> indefinitely.
> 
> Maybe tellsimpafter would be better than tellsimp.
> 
> I think though that you should not do it this way, but 
> introduce a function, say, binpower, and use it instead of 
> "^" for binary variables.  
> 
Thank.
But if I do that i can't use solve or algsys to solve my system of equation.


> > -----Original Message-----
> > From: maxima-bounces at math.utexas.edu
> > [mailto:maxima-bounces at math.utexas.edu] On Behalf Of laurent couraud
> > Sent: Sunday, October 08, 2006 8:14 AM
> > To: maxima at math.utexas.edu
> > Subject: probleme with rule
> > 
> > Hello with all,
> > 
> > I try to solve a system of equations including binary
> > variables and non binary variables. To this end I wish to say 
> > to Maxima that:  
> > For all binary variable b and for any integer n > 0 b^n = b I 
> > test this following but that causes the Bind stack overflow error.
> >  
> > put(a, Binary, true);
> > matchdeclare(b, atom, n, integerp);
> > BinaryPowerRule(b, n):=if ((n > 0) and get(b, Binary)) then b
> > else b^n; tellsimp(b^n, BinaryPowerRule(b, n));
> >  
> > a^2 => Bind stack overflow
> >  
> > Is it possible to circumvent the problem?
> >  
> > PS: i noticed that the documentation for the function "get"
> > is under "list" subject while the one for function "put" is 
> > under "Miscellaneous Options" subject.
> > 
> > Laurent.
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> > 
> 
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