Re: Recognize vector expression

*To*: mathgroup at smc.vnet.net*Subject*: [mg91010] Re: [mg90984] Recognize vector expression*From*: Oliver Ruebenkoenig <ruebenko at wolfram.com>*Date*: Sun, 3 Aug 2008 05:33:06 -0400 (EDT)*References*: <200808020724.DAA24854@smc.vnet.net>

Ciao Ramiro, On Sat, 2 Aug 2008, Ramiro dell'Erba wrote: > Dear Mathematica friends, > I have the following problem. Working in tensorial algebra I > wondering if exist a package of rules able to a "clever" managing of > the vector components. As example able to recognize that {-b3c2+b2c3, > b3c1+b1c3, -b2c1+b1c2} is Cross[b,c] and many others to a better > lecture of long expression. A simple rule, just for this, is not > enough, I need a package the contain all! > Thank you in advance, > Ramiro > > I am not sure this is what you are looking for, but xAct is a tensor algebra package for Mathematica. Have a look, maybe it helps you http://metric.iem.csic.es/Martin-Garcia/xAct/ Oliver

**References**:**Recognize vector expression***From:*"Ramiro dell'Erba" <dellerba@casaccia.enea.it>