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Re: Matrix-Multiplication w NonCommutative Entries?


use Inner[] instead of Dot[] because:

Inner[f,list1,list2,g] is a generalization of Dot in which f plays the 
role of multiplication and g of addition.


Thomas wrote:
> Hi there, 
> I want to multiply matrices with quaternionic entries in Mathematica. Dot (.) uses normal multiplication (*) for the entries. I need to change this to NonCommutativeMultiply (**) Then this would work with the Quaternions package.
> Does anybody know, how to do this?
> Thanks a lot,
> Thomas

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