List questions from unitary-matrices

Published on 10 Sep 2011 - 20:52

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A unitary matrix taking a real matrix to another real matrix, is it an orthogonal matrix?

Published on 02 Aug 2012 - 19:06

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What's the interpretation of a unitary matrix?

Published on 28 Sep 2012 - 22:35

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How to prove that, for $U$ unitary, $|\det U| = 1$ but $\det U\neq \det U^H$?

Published on 17 Nov 2012 - 15:28

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Unitary matrix for image processing

Published on 26 Nov 2012 - 16:28

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Diagonalizable unitarily Schur factorization

Published on 25 Mar 2026 - 6:32

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Does $A^n$ is unitary imply that $A$ is unitary?

Published on 13 Jan 2013 - 15:04

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Prove that if $T$ is an unitary operator, then $T^n$ is unitary

Published on 20 Feb 2013 - 20:33

509

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Is unitary $T^2$ if $T$ is unitary?

Published on 22 Feb 2013 - 2:39

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Difference between orthogonal and orthonormal matrices

Published on 27 Feb 2013 - 20:04

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An exponent operator affiliated to a vN algebra.

Published on 24 Mar 2026 - 11:55

248

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Calculating cosine-sine decomposition of a $4 \times 4$ unitary matrix?

Published on 12 Aug 2020 - 6:21

123

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Is any full rank feature matrix unitary? If so, why?

Published on 13 Aug 2020 - 18:04

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Different presentations of $\mathfrak{su}(2)$ (Lie algebras)

Published on 14 Aug 2020 - 1:18

890

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Are all similar Hermitian matrices unitarily similar?

Published on 25 Mar 2026 - 17:38

List Question

Eigenvalues of unitary matrices

A unitary matrix taking a real matrix to another real matrix, is it an orthogonal matrix?

What's the interpretation of a unitary matrix?

How to prove that, for $U$ unitary, $|\det U| = 1$ but $\det U\neq \det U^H$?

Unitary matrix for image processing

Diagonalizable unitarily Schur factorization

Does $A^n$ is unitary imply that $A$ is unitary?

Prove that if $T$ is an unitary operator, then $T^n$ is unitary

Is unitary $T^2$ if $T$ is unitary?

Difference between orthogonal and orthonormal matrices

An exponent operator affiliated to a vN algebra.

Calculating cosine-sine decomposition of a $4 \times 4$ unitary matrix?

Is any full rank feature matrix unitary? If so, why?

Different presentations of $\mathfrak{su}(2)$ (Lie algebras)

Are all similar Hermitian matrices unitarily similar?

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