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 School of Physics, M013 Fax: +61 8 6488 1014 The University of Western Australia (CRICOS Provider No 00126G) 35 Stirling Highway Crawley WA 6009 mailto:paul at physics.uwa.edu.au AUSTRALIA http://physics.uwa.edu.au/~paul