1/ Short proof that complex normal matrics (A A* = A* A) are diagonalizable
A good proof of Schur is, of course, to find an eigenvector, work in a basis which includes it, and then to recurse...
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1/ Short proof that complex normal matrics (A A* = A* A) are diagonalizable
A good proof of Schur is, of course, to find an eigenvector, work in a basis which includes it, and then to recurse...