[Date Index] [Thread Index] [Author Index]

simplifying complex polynomials

• To: mathgroup at smc.vnet.net
• Subject: [mg13699] simplifying complex polynomials
• From: dhs6 at po.cwru.edu (Daniel H. Steinberg)
• Date: Sat, 15 Aug 1998 04:39:28 -0400
• Organization: Case Western Reserve University, Cleveland OH (USA)
• Sender: owner-wri-mathgroup at wolfram.com

A friend of mine is trying to simplify polynomials which are sums of
monomials each of which is the product of terms which are y_[] and z_[]
where the [] is a vector like [1,1,2,1,5].

Her simplification rules are fairly straightforward -- but how do you
get Mathematica to do it.

Rule 1: Each monomial must be quadratic in z (i.e. if it's not, replace
it by 0)

Rule 2: Each monomial's vector subscripts must sum (over all z's and
y's) to the vector [1,2,2,2,1]  (for example). If it doesn't the term
can be eliminated.

Any thoughts? She's trying to process it as a list but this seems to be
further complicated by multiplicities.

Thanks, Daniel