Question

How to factorize this determinant?

score 256 · Answer 1 · 2026-04-02 17:25:41

256

Views

How to factorize this determinant?

Published on 02 Apr 2026 - 17:25

score 290 · Answer 2 · 2026-03-25 19:04:31

290

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Why is this sum of Kronecker products singular?

Published on 25 Mar 2026 - 19:04

score 91 · Answer 3 · 2020-03-23 05:44:30

91

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If $M$ is $n$ by $n$ square matrix, and $\det(M+I) \ge 0$, show that $\det(M^5+I) \ge 0$

Published on 23 Mar 2020 - 5:44

score 42 · Answer 4 · 2020-03-23 08:20:43

42

Views

Maximal determinant of a matrix with $\| A \|_F = 1$

Published on 23 Mar 2020 - 8:20

score 92 · Answer 5 · 2020-03-23 15:56:38

92

Views

Do $A$ and $-A^t$ have a different characteristic polynomial if $A$ is traceless has size dimension than 2.

Published on 23 Mar 2020 - 15:56

score 291 · Answer 6 · 2020-03-24 17:57:23

291

Views

What is det(-B), If A is a 4x4 matrix with det(A)=3 and B can be obtained with the following row reduction operations

Published on 24 Mar 2020 - 17:57

score 58 · Answer 7 · 2020-03-25 18:08:53

58

Views

Calculate this determinant

Published on 25 Mar 2020 - 18:08

score 264 · Answer 8 · 2026-03-25 09:28:55

264

Views

Proof that characteristic polynomial of matrices in certain form is product of characteristic polynomials of sub-matrices

Published on 25 Mar 2026 - 9:28

score 1k · Answer 9 · 2020-03-26 17:30:11

1k

Views

How to solve the determinant without expanding?

Published on 26 Mar 2020 - 17:30

score 25 · Answer 10 · 2020-03-26 19:13:29

In a determinant prove that $a_2A_1 + b_2B_1 + c_2C_1 = 0$ where $A_1, B_1, C_1$ is the cofactors of $a_1, b_1, c_1.$?

score 100 · Answer 11 · 2026-04-01 10:00:18

100

Views

For which $a$ does it hold that $\det(A)=0$?

Published on 01 Apr 2026 - 10:00

score 396 · Answer 12 · 2020-03-27 16:46:14

396

Views

Determinant and Linearly Independent Vectors

Published on 27 Mar 2020 - 16:46

score 407 · Answer 13 · 2020-03-29 13:05:44

407

Views

How to find matrices $A$ and $B$ such that for all real $t$, the eigenvalues of matrix $A+tB$ are $\pm \sqrt{t}$?

Published on 29 Mar 2020 - 13:05

score 41 · Answer 14 · 2020-03-29 13:23:58

41

Views

Valid induction?

Published on 29 Mar 2020 - 13:23

score 64 · Answer 15 · 2026-03-28 07:41:30

64

Views

Sign of a quadratic form on a real vector plane is mainly controlled by the determinant

Published on 28 Mar 2026 - 7:41

List Question

How to factorize this determinant?

Why is this sum of Kronecker products singular?

If $M$ is $n$ by $n$ square matrix, and $\det(M+I) \ge 0$, show that $\det(M^5+I) \ge 0$

Maximal determinant of a matrix with $\| A \|_F = 1$

Do $A$ and $-A^t$ have a different characteristic polynomial if $A$ is traceless has size dimension than 2.

What is det(-B), If A is a 4x4 matrix with det(A)=3 and B can be obtained with the following row reduction operations

Calculate this determinant

Proof that characteristic polynomial of matrices in certain form is product of characteristic polynomials of sub-matrices

How to solve the determinant without expanding?

In a determinant prove that $a_2A_1 + b_2B_1 + c_2C_1 = 0$ where $A_1, B_1, C_1$ is the cofactors of $a_1, b_1, c_1.$?

For which $a$ does it hold that $\det(A)=0$?

Determinant and Linearly Independent Vectors

How to find matrices $A$ and $B$ such that for all real $t$, the eigenvalues of matrix $A+tB$ are $\pm \sqrt{t}$?

Valid induction?

Sign of a quadratic form on a real vector plane is mainly controlled by the determinant

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