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Improved readability of results. No sunstantivre change.

edited Aug 14, 2016 at 15:20

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Here is a counterexample.

I will use MATLAB notation for matrices, so ; ends each row of the matrix.

Let M be the 2 by 3 matrix M = [1 2 3;4 5 6]. Then A = [ 1.25 0 0.25;0 0 0;0.25 0 1.25].

MM' = MAM'= [14 32;32 77].

answered Aug 14, 2016 at 15:05

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