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Hey all,

I'm having trouble showing the following point:

if A is an invertible (n×n, real) matrix that commutes with ALL other invertible (n×n, real) matrices, then A is of the form cI, where c is any real number not equal to 0.

Anyone know how to show this?

I'm having trouble showing the following point:

if A is an invertible (n×n, real) matrix that commutes with ALL other invertible (n×n, real) matrices, then A is of the form cI, where c is any real number not equal to 0.

Anyone know how to show this?

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