About Simplify

*To*: mathgroup at smc.vnet.net*Subject*: [mg2355] About Simplify*From*: Jesus ROJO <jesroj at wmatem.eis.uva.es>*Date*: Fri, 27 Oct 1995 01:49:31 -0400

Your message: > > Jesus: > > Group rules do not allow comparisons of systems like Maple vs. > Mathematica. Please remove the Maple paragraph below and I > will post your message. > > Thank you. > > Moderator > Hello, When you work with Mathematica in a non-trivial way, you frecuently use the function Simplify. But this function has a important problem. If Simplify finishes its work, the result is fine. If it doesn't finish, it paralyses the computer and the 'trace' of work shows that the computer doesn't work. The problem comes generally with very long variables (or expressions), which are the most interesting to simplify. Other symbolic manipulators solve better this problem; let be 'XXX' one of this. When I have a variable that I cannot simplify with Mathematica, then the XXX manipulator makes the simplification in a reasonable time (e.g. 10 or 15 minutes for a 100K variable). My question is double. First: is there another Simplify that I don't know ? Second: do there exist some previous operations that improve the work of Simplify ? In any circumstance I think that it is necessary that 'Mathematica' has in the future a better function than the actual one. I send also this message to technical support of Mathematica in the hope of getting any answer for my problem. Sincerely, Jesus ROJO --------------------------------------- | Jesus ROJO | | Dpto. de Matematica Aplicada | | E.T.S. de Ingenieros Industriales | | Paseo del Cauce s/n | | 47011 VALLADOLID, Spain | | Phone : 34 - 83 - 42 33 90 | | Fax : 34 - 83 - 42 34 06 | | e-mail: jesroj at wmatem.eis.uva.es | ---------------------------------------