Re: Transpose[A]*A wrong?
- To: mathgroup at smc.vnet.net
- Subject: [mg41160] Re: [mg41129] Transpose[A]*A wrong?
- From: Bobby Treat <drmajorbob+MathGroup3528 at mailblocks.com>
- Date: Tue, 6 May 2003 05:59:23 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Transpose[A].A Bobby -----Original Message----- From: Daniel Lidstrm <daniel.lidstrom at _DELETE_home.se> To: mathgroup at smc.vnet.net Subject: [mg41160] [mg41129] Transpose[A]*A wrong? Hi, why does Mathematica give the wrong result here? In[1]:= \!\(A\ = \ {{x\_11, x\_12, x\_13}, {x\_21, x\_22, x\_23}, {x\_31, x\_32, x\_33}}\) Out[1]= {{x , x , x }, {x , x , x }, {x , x , x }} 11 12 13 21 22 23 31 32 33 In[2]:= Transpose[A]*A 2 2 2 Out[2]= {{x , x x , x x }, {x x , x , x x }, {x x , x x , x }} 11 12 21 13 31 12 21 22 23 32 13 31 23 32 33 Look at the diagonal elements for example. Thanks! /Daniel -- Daniel Lidström 62 23' 25" N 17 15' 31" E