Re: How to simplify transposed terms?

• To: mathgroup at smc.vnet.net
• Subject: [mg2758] Re: How to simplify transposed terms?
• From: rubin at msu.edu (Paul A. Rubin)
• Date: Wed, 13 Dec 1995 02:02:19 -0500
• Organization: Michigan State University

```In article <4a8qeb\$5l3 at dragonfly.wri.com>, that ignoramus
rubin at msu.edu (Paul A. Rubin) wrote:
[blather, blather, blather ...]
->  Unprotect[Transpose];
->  Transpose[ A_ B_ ] := Transpose[ B ] Transpose[ A ] /;
->    MatrixQ[ A ] && MatrixQ[ B ]
[etc.]
->  In[]:= A /: MatrixQ[ A ] := True
->  In[]:= B /: MatrixQ[ B ] := True
->  In[]:= Transpose[ A B ]
->  Out[]= Transpose[A]*Transpose[B]

It's been pointed out to me that distributing Transpose across Times isn't
the brightest of moves.  Mea culpa:  That should have been Dot, not Times.

Paul Rubin

**************************************************************************
* Paul A. Rubin                                  Phone: (517) 432-3509   *
* Department of Management                       Fax:   (517) 432-1111   *
* Eli Broad Graduate School of Management        Net:   RUBIN at MSU.EDU    *
* Michigan State University                                              *
* East Lansing, MI  48824-1122  (USA)                                    *
**************************************************************************
Mathematicians are like Frenchmen:  whenever you say something to them,
they translate it into their own language, and at once it is something
entirely different.                                    J. W. v. GOETHE

```

• Prev by Date: Re: Mathematica 2.2.3 on Windows 95
• Next by Date: Re: Mathematica 2.2.3 on Windows 95
• Previous by thread: Re: How to simplify transposed terms?
• Next by thread: Mathematica related Web sites