Question

If the square matrix A is positive definite, and I is the conformable identity matrix, then I − A is also positive definite.

score 170 · Answer 1 · 2026-05-10 15:52:45

170

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If the square matrix A is positive definite, and I is the conformable identity matrix, then I − A is also positive definite.

Published on 10 May 2026 - 15:52

score 207 · Answer 2 · 2026-03-27 01:44:29

207

Views

Power inequality of the numerical range

Published on 27 Mar 2026 - 1:44

score 70 · Answer 3 · 2026-03-27 03:49:11

70

Views

Can one construct a linear system of equations whose solution values are extremely close to each other?

Published on 27 Mar 2026 - 3:49

score 4.2k · Answer 4 · 2026-05-11 18:25:15

4.2k

Views

Why is the square root of Cholesky decomposition equal to the lower triangular matrix?

Published on 11 May 2026 - 18:25

score 73 · Answer 5 · 2026-05-11 07:50:11

73

Views

Can I solve a system of massive linear equations faster if I know the solution to a system with the same matrix $A$.

Published on 11 May 2026 - 7:50

score 1.4k · Answer 6 · 2026-05-10 19:14:44

1.4k

Views

Cost of Gaussian Elimination

Published on 10 May 2026 - 19:14

score 146 · Answer 7 · 2026-03-27 01:47:47

146

Views

Show that $F(A+B)$ is a proper subset of $F(A) + F(B)$.

Published on 27 Mar 2026 - 1:47

score 59 · Answer 8 · 2026-04-26 23:09:38

59

Views

NMF factorization to get the desired matrix

Published on 26 Apr 2026 - 23:09

score 267 · Answer 9 · 2026-03-27 01:42:27

267

Views

From Euler forward method in to Euler backward.

Published on 27 Mar 2026 - 1:42

score 115 · Answer 10 · 2026-03-27 03:41:00

115

Views

Generalization of Multiplicity for System of Non Linear Equations

Published on 27 Mar 2026 - 3:41

score 435 · Answer 11 · 2026-03-27 01:47:01

435

Views

Prove the equivalence of the matrix $2$-norm and $\infty$-norm.

Published on 27 Mar 2026 - 1:47

score 45 · Answer 12 · 2026-04-16 03:58:07

45

Views

Rank of a matrix in a matrix product

Published on 16 Apr 2026 - 3:58

score 1.5k · Answer 13 · 2026-03-27 01:44:01

1.5k

Views

Solving a nonlinear system of two equations with two unknowns using Newton's method

Published on 27 Mar 2026 - 1:44

score 64 · Answer 14 · 2026-03-27 01:47:43

64

Views

Questions about non-full rank matrix, eigenvectors of the 0 eigenvalues and correct choise of them to support a different matrix

Published on 27 Mar 2026 - 1:47

score 119 · Answer 15 · 2026-05-10 18:29:18

119

Views

Describe the set of all possible real projector matrices in $\mathbb{R}^{2 \times 2}$

Published on 10 May 2026 - 18:29

List Question

If the square matrix A is positive definite, and I is the conformable identity matrix, then I − A is also positive definite.

Power inequality of the numerical range

Can one construct a linear system of equations whose solution values are extremely close to each other?

Why is the square root of Cholesky decomposition equal to the lower triangular matrix?

Can I solve a system of massive linear equations faster if I know the solution to a system with the same matrix $A$.

Cost of Gaussian Elimination

Show that $F(A+B)$ is a proper subset of $F(A) + F(B)$.

NMF factorization to get the desired matrix

From Euler forward method in to Euler backward.

Generalization of Multiplicity for System of Non Linear Equations

Prove the equivalence of the matrix $2$-norm and $\infty$-norm.

Rank of a matrix in a matrix product

Solving a nonlinear system of two equations with two unknowns using Newton's method

Questions about non-full rank matrix, eigenvectors of the 0 eigenvalues and correct choise of them to support a different matrix

Describe the set of all possible real projector matrices in $\mathbb{R}^{2 \times 2}$

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