Question

About the Brouwer degree of a mapping between subsets of the real line.

score 153 · Answer 1 · 2026-04-10 02:48:28

153

Views

About the Brouwer degree of a mapping between subsets of the real line.

Published on 10 Apr 2026 - 2:48

score 127 · Answer 2 · 2026-04-14 06:08:57

127

Views

How to convince myself (imagine) that $\Bbb S^1$-action on $\Bbb S^3$ fixes a circle of sphere?

Published on 14 Apr 2026 - 6:08

score 356 · Answer 3 · 2026-04-10 02:36:39

356

Views

Motivation for defining tangent vectors with derivations and why they should act on $f\in C^\infty(M)$

Published on 10 Apr 2026 - 2:36

score 82 · Answer 4 · 2026-05-11 06:16:54

82

Views

Rigidity in the monoidal cobordism category

Published on 11 May 2026 - 6:16

score 113 · Answer 5 · 2026-04-14 14:50:27

113

Views

Commutativity of a diagram involving differential of a smooth map and a Jacobian matrix

Published on 14 Apr 2026 - 14:50

score 472 · Answer 6 · 2026-04-14 00:40:48

472

Views

Collars of a manifold

Published on 14 Apr 2026 - 0:40

score 240 · Answer 7 · 2026-05-10 19:27:42

240

Views

What is the zipper?

Published on 10 May 2026 - 19:27

score 1.5k · Answer 8 · 2026-04-08 18:36:22

1.5k

Views

inclusion map in smooth manifold

Published on 08 Apr 2026 - 18:36

score 188 · Answer 9 · 2026-04-10 15:04:06

188

Views

Is Gromov's conjecture about optimal Betti number estimate true for compact manifolds?

Published on 10 Apr 2026 - 15:04

score 128 · Answer 10 · 2026-04-12 07:49:38

128

Views

If $T_t$ is the flow generated by the autonomous velocity $v$ and $\left.v\right|_{\partial\Omega}=0$, then $T_t(\partial\Omega)=\partial\Omega$

Published on 12 Apr 2026 - 7:49

score 110 · Answer 11 · 2026-04-11 23:19:05

110

Views

Relationship between Euler characteristic of Manifold and Submanifold using Gauss-Bonnet Theorem with Boundary?

Published on 11 Apr 2026 - 23:19

score 191 · Answer 12 · 2026-05-14 19:03:08

191

Views

When does the Euler characteristic from Poincare-Hopf for a Complex Vector Field equal the Euler Characteristic from Gauss-Bonnet?

Published on 14 May 2026 - 19:03

score 503 · Answer 13 · 2026-04-12 20:06:26

503

Views

Bott Tu Exercise 6.14, integration along the fiber

Published on 12 Apr 2026 - 20:06

score 173 · Answer 14 · 2026-04-16 15:09:21

173

Views

Centers of exceptional Lie groups for Lie algebra $\mathfrak{g_2,f_4,e_6,e_7,e_8}$

Published on 16 Apr 2026 - 15:09

score 128 · Answer 15 · 2026-04-17 06:43:45

128

Views

Homotopy groups $\pi_d(G)$ of exceptional Lie groups $G$ for Lie algebra $\mathfrak{g_2,f_4,e_6,e_7,e_8}$

Published on 17 Apr 2026 - 6:43

List Question

About the Brouwer degree of a mapping between subsets of the real line.

How to convince myself (imagine) that $\Bbb S^1$-action on $\Bbb S^3$ fixes a circle of sphere?

Motivation for defining tangent vectors with derivations and why they should act on $f\in C^\infty(M)$

Rigidity in the monoidal cobordism category

Commutativity of a diagram involving differential of a smooth map and a Jacobian matrix

Collars of a manifold

What is the zipper?

inclusion map in smooth manifold

Is Gromov's conjecture about optimal Betti number estimate true for compact manifolds?

If $T_t$ is the flow generated by the autonomous velocity $v$ and $\left.v\right|_{\partial\Omega}=0$, then $T_t(\partial\Omega)=\partial\Omega$

Relationship between Euler characteristic of Manifold and Submanifold using Gauss-Bonnet Theorem with Boundary?

When does the Euler characteristic from Poincare-Hopf for a Complex Vector Field equal the Euler Characteristic from Gauss-Bonnet?

Bott Tu Exercise 6.14, integration along the fiber

Centers of exceptional Lie groups for Lie algebra $\mathfrak{g_2,f_4,e_6,e_7,e_8}$

Homotopy groups $\pi_d(G)$ of exceptional Lie groups $G$ for Lie algebra $\mathfrak{g_2,f_4,e_6,e_7,e_8}$

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