List questions from diagonalization

Published on 25 Mar 2026 - 16:02

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Diagonalize $\left(\begin{smallmatrix} 1 & 3 \\ 0 & 6 \end{smallmatrix}\right)$

Published on 16 Sep 2018 - 10:34

150

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Question about simultaneous diagonalization.

Published on 17 Sep 2018 - 22:26

241

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Proof on Diagonalizability

Published on 18 Sep 2018 - 15:43

148

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How to prove that the eigenvalue(s) appears on the diagonal matrix $D=[T]_\beta$ are all the eigenvalue(s) of $T$?

Published on 19 Sep 2018 - 9:24

856

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How to diagonalize the sum of outer products

Published on 22 Sep 2018 - 4:51

92

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Find a Jordan form of a non-diagonazable matrix

Published on 22 Sep 2018 - 18:26

1k

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Two eigenvalues with one eigenvector, is the matrix diagonalizable?

Published on 23 Sep 2018 - 0:34

406

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Unitary Diagonalization of Quadratic Form

Published on 25 Mar 2026 - 6:02

64

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Find all numbers a and b such that the matrix A is orthogonal

Published on 25 Sep 2018 - 5:13

1.1k

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Show that the matrix $A = \begin{bmatrix} 2 & 0 \\ -1 & 2 \end{bmatrix}$ is not diagonalizable.

Published on 24 Mar 2026 - 23:54

462

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Explicit formula for $(I+E)^{-1}$ for E is Idempotent Matrix

Published on 26 Sep 2018 - 10:07

131

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Positive matrices are diagonalizable in $\mathbb C$?

Published on 25 Mar 2026 - 1:15

134

Views

Do any even-order square non-diagonalizable matrices with strictly positive entries exist?

Published on 27 Sep 2018 - 12:40

449

Views

Is a $2x2$ real matrix with complex eigenvalues upper triangular?

Published on 27 Sep 2018 - 23:25

List Question

If $T\in L(V)$ is diagonalizable then show that $R(T)\cap N(T)=\{0\}$

Diagonalize $\left(\begin{smallmatrix} 1 & 3 \\ 0 & 6 \end{smallmatrix}\right)$

Question about simultaneous diagonalization.

Proof on Diagonalizability

How to prove that the eigenvalue(s) appears on the diagonal matrix $D=[T]_\beta$ are all the eigenvalue(s) of $T$?

How to diagonalize the sum of outer products

Find a Jordan form of a non-diagonazable matrix

Two eigenvalues with one eigenvector, is the matrix diagonalizable?

Unitary Diagonalization of Quadratic Form

Find all numbers a and b such that the matrix A is orthogonal

Show that the matrix $A = \begin{bmatrix} 2 & 0 \\ -1 & 2 \end{bmatrix}$ is not diagonalizable.

Explicit formula for $(I+E)^{-1}$ for E is Idempotent Matrix

Positive matrices are diagonalizable in $\mathbb C$?

Do any even-order square non-diagonalizable matrices with strictly positive entries exist?

Is a $2x2$ real matrix with complex eigenvalues upper triangular?

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