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From: Deane Yang (deane_yang_at_[hidden])
Date: 2004-07-06 06:51:50

Michael Stevens wrote:

> This is very odd. In linear algebra there is no such thing as a matrix of
> matrices.

Yes, there is. It's a linear transformation mapping
a space of matrices to another space of matrices.

But could Jeremy or David provide some examples of useful applications
of such an object? They are immensely useful in pure mathematics;
I would love to know how they arise in more practical areas.


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