Question

Are the Integers modulo 24 not a field or an integral domain?

score 251 · Answer 1 · 2026-04-15 14:42:10

251

Views

Are the Integers modulo 24 not a field or an integral domain?

Published on 15 Apr 2026 - 14:42

score 267 · Answer 2 · 2026-04-13 16:25:30

267

Views

How do you change a vector in a non-canonical base to another non-canonical base?

Published on 13 Apr 2026 - 16:25

score 1.1k · Answer 3 · 2026-04-13 15:25:32

1.1k

Views

Show that a matrix is not positive definite

Published on 13 Apr 2026 - 15:25

score 173 · Answer 4 · 2026-04-15 23:16:24

$A,B,C \in M_n$; $AXB=C$; if $A$ or $B$ singular, a solution $X$ exist iff $\text{rank}\{B^T\otimes A\}=\text{rank}\{B^T\otimes A\,\text{ vec}(C)\}$

score 126 · Answer 5 · 2026-04-13 05:19:11

126

Views

What does the notation $\operatorname{Mat}_{b'}^bf$ represent?

Published on 13 Apr 2026 - 5:19

score 289 · Answer 6 · 2026-04-14 08:13:33

289

Views

Let a,b,c real numbers. Show that the system of linear equations has only one solution

Published on 14 Apr 2026 - 8:13

score 199 · Answer 7 · 2026-04-13 06:23:04

199

Views

Uniqueness of Eigenspaces

Published on 13 Apr 2026 - 6:23

score 53 · Answer 8 · 2026-04-14 22:25:29

53

Views

Why do we have to take $0$ for sugar instead of $100$ in this mixture?

Published on 14 Apr 2026 - 22:25

score 47 · Answer 9 · 2026-04-13 09:27:45

47

Views

doesn't solving for linear independence require the use of linear algebra?

Published on 13 Apr 2026 - 9:27

score 81 · Answer 10 · 2026-04-16 15:35:22

81

Views

Show that $\lambda_n = (-1)^n, \lambda_{n-1} = (-1)^{n-1}$. $Trace(\phi)$ and $ \lambda_0 = det(\phi)$.

Published on 16 Apr 2026 - 15:35

score 530 · Answer 11 · 2026-04-12 14:51:35

530

Views

How do you represent constants in a spanning set of vectors?

Published on 12 Apr 2026 - 14:51

score 71 · Answer 12 · 2026-04-17 01:20:40

71

Views

Does $HOX = OX$ imply $HO^TX = O^TX$?

Published on 17 Apr 2026 - 1:20

score 91 · Answer 13 · 2026-04-13 21:40:41

91

Views

For $2\times 2$ matrices proof that: If row-vectors are linearly dependent, then $\det=0$

Published on 13 Apr 2026 - 21:40

score 230 · Answer 14 · 2026-04-14 00:05:38

230

Views

Do eigenvalues of a Hermitian matrix depend smoonthly on its entries?

Published on 14 Apr 2026 - 0:05

score 12.6k · Answer 15 · 2026-04-14 21:08:49

12.6k

Views

Do Real Symmetric Matrices have 'n' linearly independent eigenvectors?

Published on 14 Apr 2026 - 21:08

List Question

Are the Integers modulo 24 not a field or an integral domain?

How do you change a vector in a non-canonical base to another non-canonical base?

Show that a matrix is not positive definite

$A,B,C \in M_n$; $AXB=C$; if $A$ or $B$ singular, a solution $X$ exist iff $\text{rank}\{B^T\otimes A\}=\text{rank}\{B^T\otimes A\,\text{ vec}(C)\}$

What does the notation $\operatorname{Mat}_{b'}^bf$ represent?

Let a,b,c real numbers. Show that the system of linear equations has only one solution

Uniqueness of Eigenspaces

Why do we have to take $0$ for sugar instead of $100$ in this mixture?

doesn't solving for linear independence require the use of linear algebra?

Show that $\lambda_n = (-1)^n, \lambda_{n-1} = (-1)^{n-1}$. $Trace(\phi)$ and $ \lambda_0 = det(\phi)$.

How do you represent constants in a spanning set of vectors?

Does $HOX = OX$ imply $HO^TX = O^TX$?

For $2\times 2$ matrices proof that: If row-vectors are linearly dependent, then $\det=0$

Do eigenvalues of a Hermitian matrix depend smoonthly on its entries?

Do Real Symmetric Matrices have 'n' linearly independent eigenvectors?

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