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MathGroup Archive 2001

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Re: diagonal matrix

  • To: mathgroup at smc.vnet.net
  • Subject: [mg29120] Re: [mg29095] diagonal matrix
  • From: Andrzej Kozlowski <andrzej at tuins.ac.jp>
  • Date: Wed, 30 May 2001 05:50:35 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

on 01.5.29 3:57 PM, Su Su Win at susuwin at post.kek.jp wrote:

> Hello,
> It's me again.
> How can I make diagonal matrix (1153x1153) with 1 at diagonal?
> Thank you very much in advance.
> Regards, Win
> 
> 
>
 The answer is simple, e.g:
In[1]:=
t=DiagonalMatrix[Array[1&,{1153}]];

However, I would not wish to find out what happens if one tries to display
this. You can however manipulate it without displaying it:

In[2]:=
Dimensions[t]

Out[2]=
{1153,1153}

In[4]:=
Tr[t]

Out[4]=
1153

In[5]:=
Det[t]

Out[5]=
1

Though of course you do not really need a computer for any of this...

-- 
Andrzej Kozlowski
Toyama International University
JAPAN

http://platon.c.u-tokyo.ac.jp/andrzej/
http://sigma.tuins.ac.jp/~andrzej/



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