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Placeholders in matrix notation

• To: mathgroup at smc.vnet.net
• Subject: [mg29892] Placeholders in matrix notation
• From: dooglefish at aol.communicate (Douglas F.)
• Date: Tue, 17 Jul 2001 01:00:37 -0400 (EDT)
• Sender: owner-wri-mathgroup at wolfram.com

I want to use the partial differential operator in matrix algebra. The function
it operates on would be in another matrix. 

Here, I am using "d" to represent the partial operator
{esc}pd{esc}{ctrl-_}x{ctrl-space}

[d   0] . Transpose[  f[x]|   g[x]  ]

But Mathematica won't let me do the matrix multiplication. How do you do that?

-D

• Follow-Ups:
  • Re: Placeholders in matrix notation
    • From: "Hugh Philipp" <hph@com.dtu.dk>