Re: Re: Algebraic substitutions. HOW?
- To: mathgroup at smc.vnet.net
- Subject: [mg17712] Re: [mg17673] Re: Algebraic substitutions. HOW?
- From: "Andrzej Kozlowski" <andrzej at tuins.ac.jp>
- Date: Sun, 23 May 1999 02:25:28 -0400
- Sender: owner-wri-mathgroup at wolfram.com
AlgebraicRules is considered obsolete since version 3 and is no longer documented in the Mathematica book or online help (it works for reasons of compatibility). PolynomialReduce and GroebnerBasis should be used instead. Andrzej -- Andrzej Kozlowski Toyama International University JAPAN http://sigma.tuins.ac.jp http://eri2.tuins.ac.jp ---------- >From: hidekazu at aqua.biwako.ne.jp (Hidekazu Takahashi) To: mathgroup at smc.vnet.net >To: mathgroup at smc.vnet.net >Subject: [mg17712] [mg17673] Re: Algebraic substitutions. HOW? >Date: Sat, May 22, 1999, 12:58 PM > > > Hi Alessio, > > AlgebraicRules may help you. Please try > > a^2/b^2/.AlgebraicRules[a/b==c,{a,b,c}] > > h^3/t^2/.AlgebraicRules[h^2/t^2==z,{h,t,z}] > > Hidekazu Takahashi > <Mail> hidekazu at pop.biwako.ne.jp > <URL> http://www.biwako.ne.jp/~hidekazu/ > >> Hi, >> >> say I have an expression like (a^2)/(b^2) and I want to change it by >> introducing c:=a/b in order to obtain c^2. >> >> Euivalent exaple: h^3/t^2 -> (z:=h^2/t^2) -> z*h >> >> How do I get Mathematica to perform this kind of algebraic >> substitutions (on complex formulas)? >> >> Thanks >> Alessio >> >> ------------------------------ >> Alessio Massaro >> IT/ASD/DB Off. 31-3-013 >> CERN >> 1211 Geneva 23 >> Switzerland >> ------------------------------