Re: How to construct a matrix like this ?
- To: mathgroup at smc.vnet.net
- Subject: [mg50941] Re: How to construct a matrix like this ?
- From: Paul Abbott <paul at physics.uwa.edu.au>
- Date: Tue, 28 Sep 2004 00:59:24 -0400 (EDT)
- Organization: The University of Western Australia
- References: <cj63a6$qpr$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
In article <cj63a6$qpr$1 at smc.vnet.net>, zhoukm at hotmail.com wrote:
> With Array[a, {2,2}] I can get an array like:
> | a[1,1] a[1,2] |
> | a[2,1] a[2,2] |.
> But occasionally I want matrix like:
> | a11 a12 |
> | a21 a22 |
> I remember I once figured out a way to do it but now I forgot. Anyone
> can give me a hand?
Others have answered this question. Personally, I like
Array[Subscript[a, ##] &, {2, 2}]
or
Table[Subscript[a, i, j], {i,2}, {j,2}]
or
Outer[Subscript[a, ##] &, Range[2], Range[2]]
Cheers,
Paul
--
Paul Abbott Phone: +61 8 6488 2734
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