Question

Proving that a symmetric matrix is positive definite iff all eigenvalues are positive

score 69k · Answer 1 · 2015-09-13 22:09:11

69k

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Proving that a symmetric matrix is positive definite iff all eigenvalues are positive

Published on 13 Sep 2015 - 22:09

score 89 · Answer 2 · 2015-09-14 22:57:39

89

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Ways to diagonalize a diagonal matrix

Published on 14 Sep 2015 - 22:57

score 336 · Answer 3 · 2026-03-31 14:24:19

336

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Trace of matrix power

Published on 31 Mar 2026 - 14:24

score 97 · Answer 4 · 2015-09-26 00:37:15

97

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Diagonalizing a matrix perturbatively

Published on 26 Sep 2015 - 0:37

score 359 · Answer 5 · 2015-09-26 23:07:34

359

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Diagonalisation of a Matrix with Distinct Eigenvalues

Published on 26 Sep 2015 - 23:07

score 144 · Answer 6 · 2015-09-29 04:08:56

144

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Diagonalization of matrix and eigenvalues of $A+A^2+A^3$

Published on 29 Sep 2015 - 4:08

score 2.9k · Answer 7 · 2026-04-01 15:11:19

2.9k

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Diagonalization of a Matrix and $\lambda I -A$ Rank

Published on 01 Apr 2026 - 15:11

score 701 · Answer 8 · 2015-10-02 21:24:11

701

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Necessary and sufficient condition for a matrix to be diagonalizable

Published on 02 Oct 2015 - 21:24

score 92 · Answer 9 · 2015-10-04 03:15:39

92

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Why do we want the diagonalizing transformation matrix unitary?

Published on 04 Oct 2015 - 3:15

score 118 · Answer 10 · 2015-10-05 19:59:51

118

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$A$ is diagonalizable, find $B$ with different eigenvalues such that $B^2=A$

Published on 05 Oct 2015 - 19:59

score 46 · Answer 11 · 2015-10-06 03:27:58

46

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Need help on Linear algebra diagonalization

Published on 06 Oct 2015 - 3:27

score 1.2k · Answer 12 · 2015-10-06 07:53:37

1.2k

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If a diagonalizable matrix is equal to its cube, then its rank is equal to the trace of its square

Published on 06 Oct 2015 - 7:53

score 1k · Answer 13 · 2015-10-07 18:26:39

1k

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Diagonalizable matrix is similar to non-diagonal matrix???

Published on 07 Oct 2015 - 18:26

score 443 · Answer 14 · 2015-10-09 05:50:40

443

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Explain (without calculating the eigenvalues and eigenvectors) why the following matrix is NOT diagonalizable:

Published on 09 Oct 2015 - 5:50

score 92 · Answer 15 · 2026-03-29 22:09:19

92

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Simultaneously diagonalize the regular representation of C2 (+) C2 (+) C2.

Published on 29 Mar 2026 - 22:09

List Question

Proving that a symmetric matrix is positive definite iff all eigenvalues are positive

Ways to diagonalize a diagonal matrix

Trace of matrix power

Diagonalizing a matrix perturbatively

Diagonalisation of a Matrix with Distinct Eigenvalues

Diagonalization of matrix and eigenvalues of $A+A^2+A^3$

Diagonalization of a Matrix and $\lambda I -A$ Rank

Necessary and sufficient condition for a matrix to be diagonalizable

Why do we want the diagonalizing transformation matrix unitary?

$A$ is diagonalizable, find $B$ with different eigenvalues such that $B^2=A$

Need help on Linear algebra diagonalization

If a diagonalizable matrix is equal to its cube, then its rank is equal to the trace of its square

Diagonalizable matrix is similar to non-diagonal matrix???

Explain (without calculating the eigenvalues and eigenvectors) why the following matrix is NOT diagonalizable:

Simultaneously diagonalize the regular representation of C2 (+) C2 (+) C2.

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