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From: John Fuller (jfuller_at_[hidden])
Date: 2004-07-06 07:58:55

An example use of a block diagonal matrix is when you apply
to model decentralized planning.
Each of the independent subsystems can be represented as a matrix on
the diagonal...

On Jul 6, 2004, at 6:51 AM, Deane Yang wrote:

> 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.
> Deane
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