Matrix Dot Product
- To: mathgroup at smc.vnet.net
- Subject: [mg52159] Matrix Dot Product
- From: "MacDonald, Calum \(MAT\)" <C.A.MacDonald at gcal.ac.uk>
- Date: Sat, 13 Nov 2004 04:40:07 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
Hi I was wondering if someone could please help me with a command for calculating the dot product of two (NxN) matrices. For example, for two (2x2) matrices, A and B, we define the dot product as: A(1,1)*B(1,1) + A(2,1)*B(2,1) + A(1,2)*B(1,2) + A(2,2)*B(2,2) i.e. we multiply corresponding entries of the matrices and sum these values. It is easy to write this in a loop but for large matrices the calculation is rather slow. Is there a Mathematica function that I can call that will allow me to do this faster? Thanks Calum
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