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Re: The orde of product

• To: mathgroup at smc.vnet.net
• Subject: [mg123443] Re: The orde of product
• From: mathman <mstankus at gmail.com>
• Date: Wed, 7 Dec 2011 06:16:23 -0500 (EST)
• Delivered-to: l-mathgroup@mail-archive0.wolfram.com
• References: <201112051013.FAA04794@smc.vnet.net> <jbkj89$i4p$1@smc.vnet.net>

See http://www.math.ucsd.edu/~ncalg/

Mark

On Dec 6, 3:20 am, Bob Hanlon <hanlonr... at gmail.com> wrote:
> Use NonCommutativeMultiply ( ** )
>
> Bob Hanlon
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> On Mon, Dec 5, 2011 at 5:13 AM, =E9=81=93 =E5=8E=9A <shlwell1=
... at gmail.com> wrote:
> > How can I do that a*b is unequal to b*a in Mathematica 7?
> > Thank you.

• References:
  • The orde of product
    • From: é å <shlwell1988@gmail.com>