Question

If $A \in C^{nxn}$ , $A \ge 0 $ and A is sing., there exists a sequence of matrices $C_k$, that $C_k \ge 0$,$|C_k| = 1$ and trace $AC_k \le 1/k$

score 54 · Answer 1 · 2026-03-26 08:02:25

54

Views

If $A \in C^{nxn}$ , $A \ge 0 $ and A is sing., there exists a sequence of matrices $C_k$, that $C_k \ge 0$,$|C_k| = 1$ and trace $AC_k \le 1/k$

Published on 26 Mar 2026 - 8:02

score 572 · Answer 2 · 2019-04-24 11:51:10

572

Views

Determinants - adding one row to another

Published on 24 Apr 2019 - 11:51

score 326 · Answer 3 · 2019-04-24 17:09:49

326

Views

Determinant as sum of cofactors

Published on 24 Apr 2019 - 17:09

score 20 · Answer 4 · 2019-04-25 08:31:57

20

Views

Is it possible to find the Eigenvalues of a square matrix by reducing it into echelon form then finding what values lead to a 0 in the diagonal?

Published on 25 Apr 2019 - 8:31

score 101 · Answer 5 · 2019-04-25 16:13:48

101

Views

If $\det\left(\begin{smallmatrix}a & 1 & 1\\1 & b & 1\\1 & 1 & c\end{smallmatrix}\right) > 0 $ then prove that $abc> -8$

Published on 25 Apr 2019 - 16:13

score 177 · Answer 6 · 2026-03-25 03:02:09

177

Views

Stuck on the Proof on Fisher's Inequality

Published on 25 Mar 2026 - 3:02

score 492 · Answer 7 · 2019-04-27 15:04:36

492

Views

Largest value of determinant

Published on 27 Apr 2019 - 15:04

score 200 · Answer 8 · 2019-04-27 17:12:53

200

Views

Gram determinant and linearly independence

Published on 27 Apr 2019 - 17:12

score 1.8k · Answer 9 · 2019-04-29 11:24:31

1.8k

Views

Why is the scale factor of a matrix the determinant squared?

Published on 29 Apr 2019 - 11:24

score 53 · Answer 10 · 2019-04-30 17:40:49

53

Views

Distinctness of solutions to a determinant equation.

Published on 30 Apr 2019 - 17:40

score 88 · Answer 11 · 2026-03-29 22:13:47

88

Views

If $x = 2$ is a root of $\det\left[\begin{smallmatrix}x&-6&-1\\2&-3x&x-3\\-3&2x&x+2\end{smallmatrix}\right]=0$, find other two roots

Published on 29 Mar 2026 - 22:13

score 63 · Answer 12 · 2019-05-01 11:36:56

63

Views

Linear dependence of determinants over $\operatorname{Mat}^{\mathbb{C}}_{ n}$

Published on 01 May 2019 - 11:36

score 138 · Answer 13 · 2019-05-02 23:06:25

138

Views

Proof Question: Determinant of Block Lower Triangular Matrix

Published on 02 May 2019 - 23:06

score 32 · Answer 14 · 2019-05-03 14:04:14

32

Views

Solution verification for a determinant computation

Published on 03 May 2019 - 14:04

score 147 · Answer 15 · 2026-03-25 15:57:36

147

Views

Determinant of Lower Triangular Block Matrix (Proof Question: Decomposition)

Published on 25 Mar 2026 - 15:57

List Question

If $A \in C^{nxn}$ , $A \ge 0 $ and A is sing., there exists a sequence of matrices $C_k$, that $C_k \ge 0$,$|C_k| = 1$ and trace $AC_k \le 1/k$

Determinants - adding one row to another

Determinant as sum of cofactors

Is it possible to find the Eigenvalues of a square matrix by reducing it into echelon form then finding what values lead to a 0 in the diagonal?

If $\det\left(\begin{smallmatrix}a & 1 & 1\\1 & b & 1\\1 & 1 & c\end{smallmatrix}\right) > 0 $ then prove that $abc> -8$

Stuck on the Proof on Fisher's Inequality

Largest value of determinant

Gram determinant and linearly independence

Why is the scale factor of a matrix the determinant squared?

Distinctness of solutions to a determinant equation.

If $x = 2$ is a root of $\det\left[\begin{smallmatrix}x&-6&-1\\2&-3x&x-3\\-3&2x&x+2\end{smallmatrix}\right]=0$, find other two roots

Linear dependence of determinants over $\operatorname{Mat}^{\mathbb{C}}_{ n}$

Proof Question: Determinant of Block Lower Triangular Matrix

Solution verification for a determinant computation

Determinant of Lower Triangular Block Matrix (Proof Question: Decomposition)

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