*To*: mathgroup@smc.vnet.net*Subject*: [mg11846] RE: [mg11828] fractional simplification*From*: "jmt" <jmthomas@cybercable.tm.fr>*Date*: Wed, 1 Apr 1998 00:35:50 -0500

If you evaluate: FullForm[a.b/a] you will get Times[Power[a,-1],Dot[a,b]] Dot (see help for Dot) is related to matrix or vector product. Since neither a nor b have been defined as vector (and I suspect in your mind a and b refer to numbers), the operation a.b has no special meaning for a and b, therefore if b is a vector (like Dot suggests it should be), b/b has no special meaning again. Ordinary product is enter either by a space like "a b" or by a star "a*b" Hope this helps, **************************************** Jean-Marie THOMAS Conseil et Audit en Inginierie de Calcul Strasbourg, France **************************************** -----Original Message----- From: Pierre MARTINEU [mailto:gro@mail.club-internet.fr] To: mathgroup@smc.vnet.net Subject: [mg11846] [mg11828] fractional simplification We didn't manage to simplify the symbolic expression : "a . b/a" under Mathematica 2.2. We've tried using different functions like 'simplify' ...without success ! Is it normal ? Do you have any solutions to solve this problem ? Thanks Could you send your answer to the following e-mail : benet@gro.creditlyonnais .fr