Question

Tensor product $M\otimes_B Hom_B(M,B)$ equals $End_B(M)$, $M$ finitely generated over $B$ and projective

score 129 · Answer 1 · 2026-03-24 10:13:39

129

Views

Tensor product $M\otimes_B Hom_B(M,B)$ equals $End_B(M)$, $M$ finitely generated over $B$ and projective

Published on 24 Mar 2026 - 10:13

score 424 · Answer 2 · 2026-03-20 04:58:29

424

Views

Proving whether a matrix is invertible

Published on 20 Mar 2026 - 4:58

score 336 · Answer 3 · 2026-03-25 00:54:25

336

Views

Geometry of General Linear Group

Published on 25 Mar 2026 - 0:54

score 14.9k · Answer 4 · 2026-03-18 04:50:01

14.9k

Views

Gradient of transpose of a vector.

Published on 18 Mar 2026 - 4:50

score 289 · Answer 5 · 2026-03-25 04:18:44

289

Views

Do finitely generated torsion modules have a composition series?

Published on 25 Mar 2026 - 4:18

score 78 · Answer 6 · 2026-03-24 23:46:35

78

Views

linear algebra and vector spaces, proving w is an element of the span of a vector space

Published on 24 Mar 2026 - 23:46

score 17k · Answer 7 · 2026-03-24 20:32:08

17k

Views

How to determine if a point lies on the same side of the plane that origin does?

Published on 24 Mar 2026 - 20:32

score 11.9k · Answer 8 · 2026-03-24 22:08:48

11.9k

Views

How to quickly convert to the parametric form of equation of line?

Published on 24 Mar 2026 - 22:08

score 114 · Answer 9 · 2018-01-16 02:13:15

114

Views

Prove that $A^{-1} = \frac{1}{2}(A+I)$

Published on 16 Jan 2018 - 2:13

score 76 · Answer 10 · 2026-03-22 07:00:10

76

Views

Proof verification : Assume $A$ is a $n×m$ matrix, and $B$ is $m×n$. Prove that $AB$, an $n×n$ matrix is not invertible, if $n>m$.

Published on 22 Mar 2026 - 7:00

score 231 · Answer 11 · 2026-03-23 23:55:27

231

Views

Geometric intuition behind determinant properties

Published on 23 Mar 2026 - 23:55

score 61 · Answer 12 · 2018-01-16 05:54:44

61

Views

Determining if the subset of two vectors is a subspace in $\mathbb{R}^3$

Published on 16 Jan 2018 - 5:54

score 2.4k · Answer 13 · 2026-03-17 10:54:36

2.4k

Views

Directional derivative: what is the relation between definition by limit and definition as dot product?

Published on 17 Mar 2026 - 10:54

score 113 · Answer 14 · 2026-03-24 21:59:44

113

Views

Real orthonormal basis from complex ones

Published on 24 Mar 2026 - 21:59

score 824 · Answer 15 · 2026-03-21 22:14:53

824

Views

Decomposing an arbitrary rank tensor into components with symmetries

Published on 21 Mar 2026 - 22:14

List Question

Tensor product $M\otimes_B Hom_B(M,B)$ equals $End_B(M)$, $M$ finitely generated over $B$ and projective

Proving whether a matrix is invertible

Geometry of General Linear Group

Gradient of transpose of a vector.

Do finitely generated torsion modules have a composition series?

linear algebra and vector spaces, proving w is an element of the span of a vector space

How to determine if a point lies on the same side of the plane that origin does?

How to quickly convert to the parametric form of equation of line?

Prove that $A^{-1} = \frac{1}{2}(A+I)$

Proof verification : Assume $A$ is a $n×m$ matrix, and $B$ is $m×n$. Prove that $AB$, an $n×n$ matrix is not invertible, if $n>m$.

Geometric intuition behind determinant properties

Determining if the subset of two vectors is a subspace in $\mathbb{R}^3$

Directional derivative: what is the relation between definition by limit and definition as dot product?

Real orthonormal basis from complex ones

Decomposing an arbitrary rank tensor into components with symmetries

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