Re: How to do symbolic matrix manipulations

*To*: mathgroup at smc.vnet.net*Subject*: [mg92288] Re: [mg92276] How to do symbolic matrix manipulations*From*: "Adriano Pascoletti" <adriano.pascoletti at gmail.com>*Date*: Sat, 27 Sep 2008 06:46:44 -0400 (EDT)*References*: <200809261023.GAA09890@smc.vnet.net>

See http://reference.wolfram.com/mathematica/ref/NonCommutativeMultiply.html Adriano Pascoletti 2008/9/26 Peng Yu <pengyu.ut at gmail.com> > Hi, > > Suppose I have matrices a and b, which does not have any value yet. > > If I write b * a, mathematica would give me "a b". I'm wondering how to > make > it know that a and b are matrices, so that it would give me "b a" rather > than "a b". > > Thanks, > Peng > >

**References**:**How to do symbolic matrix manipulations***From:*"Peng Yu" <pengyu.ut@gmail.com>