Question

Conceptual question on Cramer's law. What is wrong with my solution?

score 120 · Answer 1 · 2019-06-27 06:56:55

120

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Conceptual question on Cramer's law. What is wrong with my solution?

Published on 27 Jun 2019 - 6:56

score 141 · Answer 2 · 2026-03-25 11:16:29

141

Views

Do we have for all $M \in SL_n(\Bbb K)$, $\lVert M \rVert \geq 1$ when $\lVert \cdot \rVert$ is a matrix norm?

Published on 25 Mar 2026 - 11:16

score 95 · Answer 3 · 2026-03-29 10:27:47

95

Views

Evaluating a determinant with multiple variables and multiplicative inverses

Published on 29 Mar 2026 - 10:27

score 150 · Answer 4 · 2019-07-02 19:33:00

150

Views

Matrix Tree Theorem Proof Question

Published on 02 Jul 2019 - 19:33

score 114 · Answer 5 · 2019-07-03 07:41:17

114

Views

What are the implications of the fact that the determinant of this general matrix is 4?

Published on 03 Jul 2019 - 7:41

score 207 · Answer 6 · 2019-07-03 15:40:02

207

Views

If $A$ is a square matrix of order 3 with $\det(A)=1$ and $AA^\top=I$, prove that $\det(A-I)=0$.

Published on 03 Jul 2019 - 15:40

score 239 · Answer 7 · 2019-07-03 17:42:07

239

Views

If A and B are square matrices of same order such that AB=A+B then prove that AB=BA

Published on 03 Jul 2019 - 17:42

score 94 · Answer 8 · 2019-07-04 12:57:16

94

Views

Why do the determinants of the types $\det|f(i)+g(j)|$ and $\det|f(i)g(j)|$ vanish?

Published on 04 Jul 2019 - 12:57

score 163 · Answer 9 · 2026-03-25 03:18:58

163

Views

Determinant of a tridiagonal matrix using recurrence formula

Published on 25 Mar 2026 - 3:18

score 40 · Answer 10 · 2019-07-05 19:08:07

40

Views

Matrices / Determinants / Singular or Regular Matrix - Is my solution correct?

Published on 05 Jul 2019 - 19:08

score 335 · Answer 11 · 2026-03-29 23:42:47

335

Views

Cross Products and Determinants Geometrically

Published on 29 Mar 2026 - 23:42

score 3.1k · Answer 12 · 2026-03-29 23:40:46

3.1k

Views

Determinants through dot products

Published on 29 Mar 2026 - 23:40

score 1k · Answer 13 · 2026-03-28 15:36:49

1k

Views

Derivative of the log determinant of the covariance matrix

Published on 28 Mar 2026 - 15:36

score 67 · Answer 14 · 2019-07-08 10:34:01

67

Views

Computation of determinant to compute surface area of the $n$-sphere in terms of an $n-1$ ball

Published on 08 Jul 2019 - 10:34

score 2.1k · Answer 15 · 2026-03-25 17:18:28

2.1k

Views

if negative determinant -> not positive semidefinite

Published on 25 Mar 2026 - 17:18

List Question

Conceptual question on Cramer's law. What is wrong with my solution?

Do we have for all $M \in SL_n(\Bbb K)$, $\lVert M \rVert \geq 1$ when $\lVert \cdot \rVert$ is a matrix norm?

Evaluating a determinant with multiple variables and multiplicative inverses

Matrix Tree Theorem Proof Question

What are the implications of the fact that the determinant of this general matrix is 4?

If $A$ is a square matrix of order 3 with $\det(A)=1$ and $AA^\top=I$, prove that $\det(A-I)=0$.

If A and B are square matrices of same order such that AB=A+B then prove that AB=BA

Why do the determinants of the types $\det|f(i)+g(j)|$ and $\det|f(i)g(j)|$ vanish?

Determinant of a tridiagonal matrix using recurrence formula

Matrices / Determinants / Singular or Regular Matrix - Is my solution correct?

Cross Products and Determinants Geometrically

Determinants through dot products

Derivative of the log determinant of the covariance matrix

Computation of determinant to compute surface area of the $n$-sphere in terms of an $n-1$ ball

if negative determinant -> not positive semidefinite

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