Question

Similar matrices for matrix with first column zero

score 511 · Answer 1 · 2018-04-20 11:00:45

511

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Similar matrices for matrix with first column zero

Published on 20 Apr 2018 - 11:00

score 963 · Answer 2 · 2026-04-09 02:55:48

963

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Is it true that $X(X'X)^{-1}X'-J/n$ is idempotent, where $J$ is an $n$ by $n$ matrix of ones?

Published on 09 Apr 2026 - 2:55

score 1.9k · Answer 3 · 2026-03-27 09:03:48

1.9k

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Orthogonal projection on an eigenspace

Published on 27 Mar 2026 - 9:03

score 126 · Answer 4 · 2026-03-29 01:35:46

126

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Suppose A be a matrix with Diagonal entries are $\alpha+1$ then $\alpha $ is?

Published on 29 Mar 2026 - 1:35

score 65 · Answer 5 · 2026-03-25 07:42:59

65

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Proving numerically that the rank of a matrix has a certain value

Published on 25 Mar 2026 - 7:42

score 63 · Answer 6 · 2026-03-25 11:01:47

63

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Eigenvalues of Matrix Polynomials and transformations that leave them invariant

Published on 25 Mar 2026 - 11:01

score 1k · Answer 7 · 2026-03-29 01:35:50

1k

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A symmetric matrix $A$ has eigenvalues 1 and 2. Find A if $(1, 1, 1)^T$ spans $E_2$

Published on 29 Mar 2026 - 1:35

score 111 · Answer 8 · 2026-04-09 05:31:15

111

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Properties of matrix $T_\epsilon$ such that there exists a unique inverse for $\epsilon \in (-\delta,\delta)$

Published on 09 Apr 2026 - 5:31

score 160 · Answer 9 · 2026-03-25 01:18:15

160

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Determine whether the set $\{ k \in \mathbb R^{1 \times n} : \rho(A-bk^T) < 1 \}$ is convex

Published on 25 Mar 2026 - 1:18

score 120 · Answer 10 · 2018-04-20 20:01:10

120

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Derivative of a scalar function with respect to a matrix

Published on 20 Apr 2018 - 20:01

score 1.2k · Answer 11 · 2026-04-09 00:52:58

1.2k

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simplify_full() for sage matrices

Published on 09 Apr 2026 - 0:52

score 88 · Answer 12 · 2026-03-29 03:19:09

88

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find the eigenvalue of A ???

Published on 29 Mar 2026 - 3:19

score 539 · Answer 13 · 2018-04-20 23:03:11

539

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Matrices that Generate a Free Group

Published on 20 Apr 2018 - 23:03

score 1.3k · Answer 14 · 2026-03-29 03:20:21

1.3k

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Prove that the first eigenvector is an optimal solution to the optimization problem:

Published on 29 Mar 2026 - 3:20

score 754 · Answer 15 · 2026-03-25 05:59:54

754

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Linear Algebra Solution Types Proven with Rank

Published on 25 Mar 2026 - 5:59

List Question

Similar matrices for matrix with first column zero

Is it true that $X(X'X)^{-1}X'-J/n$ is idempotent, where $J$ is an $n$ by $n$ matrix of ones?

Orthogonal projection on an eigenspace

Suppose A be a matrix with Diagonal entries are $\alpha+1$ then $\alpha $ is?

Proving numerically that the rank of a matrix has a certain value

Eigenvalues of Matrix Polynomials and transformations that leave them invariant

A symmetric matrix $A$ has eigenvalues 1 and 2. Find A if $(1, 1, 1)^T$ spans $E_2$

Properties of matrix $T_\epsilon$ such that there exists a unique inverse for $\epsilon \in (-\delta,\delta)$

Determine whether the set $\{ k \in \mathbb R^{1 \times n} : \rho(A-bk^T) < 1 \}$ is convex

Derivative of a scalar function with respect to a matrix

simplify_full() for sage matrices

find the eigenvalue of A ???

Matrices that Generate a Free Group

Prove that the first eigenvector is an optimal solution to the optimization problem:

Linear Algebra Solution Types Proven with Rank

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