Question

Shape operator and path connected surface (global theory of surface)

score 144 · Answer 1 · 2026-04-09 09:02:47

144

Views

Shape operator and path connected surface (global theory of surface)

Published on 09 Apr 2026 - 9:02

score 459 · Answer 2 · 2026-04-10 12:50:32

459

Views

Advice on thinking as an algebraist or topologist to prove theorems in analysis

Published on 10 Apr 2026 - 12:50

score 1.6k · Answer 3 · 2026-04-11 12:38:34

1.6k

Views

Prove that an open interval (0,1) and a closed interval [0,1] are not homeomorphic.

Published on 11 Apr 2026 - 12:38

score 61 · Answer 4 · 2026-04-11 11:28:44

61

Views

Universal Covering Group of particular quotient space?

Published on 11 Apr 2026 - 11:28

score 299 · Answer 5 · 2026-04-11 21:03:34

299

Views

Decomposing surfaces into pairs of pants

Published on 11 Apr 2026 - 21:03

score 1.5k · Answer 6 · 2026-03-28 23:10:32

1.5k

Views

Does " All continuous functions are bounded " or " All continuous functions attain a maximum " or together imply the domain is compact?

Published on 28 Mar 2026 - 23:10

score 1.5k · Answer 7 · 2026-04-11 12:38:37

1.5k

Views

Does weakly sequentially closed imply weakly closed?

Published on 11 Apr 2026 - 12:38

score 683 · Answer 8 · 2026-03-25 23:39:11

683

Views

Confusion about elements of the stalk of the direct image sheaf

Published on 25 Mar 2026 - 23:39

score 288 · Answer 9 · 2026-04-10 05:18:39

288

Views

"2"-group cohomology

Published on 10 Apr 2026 - 5:18

score 76 · Answer 10 · 2018-07-25 22:44:07

76

Views

A linear transformation $T$ such that $(v_1, \dots, v_k, Tv_1, \dots, Tv_k)$ is a basis for $\mathbb F^{2k}$

Published on 25 Jul 2018 - 22:44

score 483 · Answer 11 · 2026-03-28 22:28:12

483

Views

Connected components of real matrices in $M_n(\mathbb R)$ with constant rank $k$

Published on 28 Mar 2026 - 22:28

score 237 · Answer 12 · 2026-04-12 01:29:02

237

Views

On Manifolds: TOP, PDIFF, DIFF, PL

Published on 12 Apr 2026 - 1:29

score 76 · Answer 13 · 2026-04-11 08:38:12

76

Views

Is taking adjunction space compatible with topological product?

Published on 11 Apr 2026 - 8:38

score 343 · Answer 14 · 2026-04-10 04:52:28

343

Views

How are "handles" described in point set topology?

Published on 10 Apr 2026 - 4:52

score 1.1k · Answer 15 · 2026-03-25 08:13:00

1.1k

Views

Show that $\mathbb{R}^2/∼$ is homeomorphic to $\mathbb{R}$

Published on 25 Mar 2026 - 8:13

List Question

Shape operator and path connected surface (global theory of surface)

Advice on thinking as an algebraist or topologist to prove theorems in analysis

Prove that an open interval (0,1) and a closed interval [0,1] are not homeomorphic.

Universal Covering Group of particular quotient space?

Decomposing surfaces into pairs of pants

Does " All continuous functions are bounded " or " All continuous functions attain a maximum " or together imply the domain is compact?

Does weakly sequentially closed imply weakly closed?

Confusion about elements of the stalk of the direct image sheaf

"2"-group cohomology

A linear transformation $T$ such that $(v_1, \dots, v_k, Tv_1, \dots, Tv_k)$ is a basis for $\mathbb F^{2k}$

Connected components of real matrices in $M_n(\mathbb R)$ with constant rank $k$

On Manifolds: TOP, PDIFF, DIFF, PL

Is taking adjunction space compatible with topological product?

How are "handles" described in point set topology?

Show that $\mathbb{R}^2/∼$ is homeomorphic to $\mathbb{R}$

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