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MathGroup Archive 1993

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substitution pattern

  • To: mathgroup at yoda.physics.unc.edu
  • Subject: substitution pattern
  • From: leboeuf at ere.umontreal.ca (Leboeuf Martin)
  • Date: Tue, 30 Nov 1993 15:03:22 -0500 (EST)

Dear mathgroupers,

I am currently working with polynomials which are made up of
terms of the form:

              p     q
          ZETA  ZETB                             
        ---------------  * S[something]
                      r
         (ZETA + ZETB)

and I want to substitute the part in ZETx with A[p,q,r]. In order
to do that, I use the following substitution command:

(ZETA^p_. *ZETB^q_. *S[something])*(ZETA + ZETB)^r_. -> A[p,q,-r]

but this does not work in cases where p,q or r = 0. Section 2.3.1 of
the mma book by Wolfram says to look in section 2.3.9, which I did,
but I still could not figure out how to achieve this goal.

Does anyone out there knows how ??  thanks in advance, martin
-- 

       Martin Leboeuf
       CERCA - CEntre de Recherche en Calcul Applique
       Universite de Montreal
       Montreal Quebec
       leboeuf at ERE.UMontreal.CA








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