Question

Relation between quadratic refinement and quadratic form

score 634 · Answer 1 · 2026-04-15 05:02:27

634

Views

Relation between quadratic refinement and quadratic form

Published on 15 Apr 2026 - 5:02

score 567 · Answer 2 · 2026-04-14 05:39:40

567

Views

Regarding orientation and orientation-reversing in local diffeomorphism

Published on 14 Apr 2026 - 5:39

score 100 · Answer 3 · 2026-04-14 23:47:23

100

Views

How is "index" at an Walrasian equilibrium proved? (in relation to Hopf-Poincare theorem)

Published on 14 Apr 2026 - 23:47

score 71 · Answer 4 · 2026-04-12 02:54:51

71

Views

Which is harder to compute: $\pi_{n+k}$ or $\Omega^{fr}_n$?

Published on 12 Apr 2026 - 2:54

score 278 · Answer 5 · 2026-04-16 18:00:04

278

Views

All 1-tensors are alternating

Published on 16 Apr 2026 - 18:00

score 1.4k · Answer 6 · 2026-04-14 08:08:16

1.4k

Views

wedge product and determinant

Published on 14 Apr 2026 - 8:08

score 156 · Answer 7 · 2026-04-08 19:34:13

156

Views

Rôle of smooth structure

Published on 08 Apr 2026 - 19:34

score 411 · Answer 8 · 2026-04-12 06:30:17

411

Views

The matrix specify an algernating $k$-tensor on $V$, and dim$\bigwedge^k(V^*)=1$

Published on 12 Apr 2026 - 6:30

score 2.1k · Answer 9 · 2026-04-11 22:21:17

2.1k

Views

Immersion is a diffeomorphism

Published on 11 Apr 2026 - 22:21

score 1.5k · Answer 10 · 2026-04-14 05:53:42

1.5k

Views

Showing Degree $1$ Maps Induce Surjections on $\pi_1$

Published on 14 Apr 2026 - 5:53

score 674 · Answer 11 · 2026-04-17 04:03:44

674

Views

GP 1.2.2 $T_x(U) = T_x(X) \text{ for } x \in U.$

Published on 17 Apr 2026 - 4:03

score 871 · Answer 12 · 2026-04-09 01:33:10

871

Views

Which compact (orientable) surfaces are parallelizable?

Published on 09 Apr 2026 - 1:33

score 676 · Answer 13 · 2026-04-16 19:17:18

676

Views

GP 1.2.10(b) The tangent space $T_{(x,x)}(\triangle)$ is the diagonal of $T_x(X) \times T_x(X).$

Published on 16 Apr 2026 - 19:17

score 543 · Answer 14 · 2026-04-16 15:08:10

543

Views

Can we smoothly embed $\mathbb{S}^2 \times \mathbb{S}^1$ or $\mathbb{RP}^2 \times \mathbb{R}$ in $\mathbb{R}^4$?

Published on 16 Apr 2026 - 15:08

score 469 · Answer 15 · 2026-04-12 12:58:15

469

Views

Groups of homotopy spheres II?

Published on 12 Apr 2026 - 12:58

List Question

Relation between quadratic refinement and quadratic form

Regarding orientation and orientation-reversing in local diffeomorphism

How is "index" at an Walrasian equilibrium proved? (in relation to Hopf-Poincare theorem)

Which is harder to compute: $\pi_{n+k}$ or $\Omega^{fr}_n$?

All 1-tensors are alternating

wedge product and determinant

Rôle of smooth structure

The matrix specify an algernating $k$-tensor on $V$, and dim$\bigwedge^k(V^*)=1$

Immersion is a diffeomorphism

Showing Degree $1$ Maps Induce Surjections on $\pi_1$

GP 1.2.2 $T_x(U) = T_x(X) \text{ for } x \in U.$

Which compact (orientable) surfaces are parallelizable?

GP 1.2.10(b) The tangent space $T_{(x,x)}(\triangle)$ is the diagonal of $T_x(X) \times T_x(X).$

Can we smoothly embed $\mathbb{S}^2 \times \mathbb{S}^1$ or $\mathbb{RP}^2 \times \mathbb{R}$ in $\mathbb{R}^4$?

Groups of homotopy spheres II?

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