Question

If d.c.c. holds for irreducible closed sets is the topological space Noetherian?

score 120 · Answer 1 · 2018-01-31 20:02:12

120

Views

If d.c.c. holds for irreducible closed sets is the topological space Noetherian?

Published on 31 Jan 2018 - 20:02

score 807 · Answer 2 · 2026-03-22 18:18:43

807

Views

The relation between $M$ is orientable and the normal bundle of $M$ in $\mathbb{R}^n$ is trivial?

Published on 22 Mar 2026 - 18:18

score 288 · Answer 3 · 2018-02-01 13:39:30

288

Views

Examples of CW-complex with finite homotopy groups

Published on 01 Feb 2018 - 13:39

score 106 · Answer 4 · 2026-03-20 03:16:46

106

Views

Persistence Homology on a grid Distance measure

Published on 20 Mar 2026 - 3:16

score 370 · Answer 5 · 2026-03-23 09:03:26

370

Views

Second Stiefel-Whitney class and first Pontryagin class of total spaces of linear $S^2$ bundles over $S^4$

Published on 23 Mar 2026 - 9:03

score 277 · Answer 6 · 2018-02-02 03:57:42

277

Views

Why $H_m(X\times Y)\simeq \bigoplus_{p+q=m} H_p(X;H_q(Y))$ for singular homology?

Published on 02 Feb 2018 - 3:57

score 146 · Answer 7 · 2018-02-02 17:37:31

146

Views

Condition for a function $\widetilde \phi:\mathbb{H}\rightarrow \mathbb{H}$ to descend to $S_g$

Published on 02 Feb 2018 - 17:37

score 275 · Answer 8 · 2026-03-12 05:48:05

275

Views

Inverse as a function of bijective paths are also homotopic

Published on 12 Mar 2026 - 5:48

score 2.2k · Answer 9 · 2026-03-20 18:25:47

2.2k

Views

The map $p : S^1 → S^1$ given by $p(z) = z^2$ is a covering map. Generalize to $p(z) = z^n$.

Published on 20 Mar 2026 - 18:25

score 808 · Answer 10 · 2026-03-25 12:33:05

808

Views

Visualising $\pi_2(S^2)$ and $\pi_2(\mathbb{R}P^2)$

Published on 25 Mar 2026 - 12:33

score 209 · Answer 11 · 2026-03-22 14:03:34

209

Views

A fibration $p : E \rightarrow X$ is trivial iff $p$ is a homotopy equivalence

Published on 22 Mar 2026 - 14:03

score 144 · Answer 12 · 2026-03-20 10:08:23

144

Views

Computing homology groups, algebra confusion

Published on 20 Mar 2026 - 10:08

score 168 · Answer 13 · 2026-03-25 11:15:55

168

Views

Induced maps in local homology and isotopies

Published on 25 Mar 2026 - 11:15

score 42 · Answer 14 · 2026-03-20 00:06:55

42

Views

If $H \le \pi_1(X,x)$ is conjugate to $P_(\pi_1(Y, y))$, then $H \cong P_(\pi_1(Y, y'))$ for some $y' \in P^{-1}(x)$

Published on 20 Mar 2026 - 0:06

score 415 · Answer 15 · 2026-03-22 04:00:55

415

Views

Calculating the fundamental group of $S^1$ with SvK

Published on 22 Mar 2026 - 4:00

List Question

If d.c.c. holds for irreducible closed sets is the topological space Noetherian?

The relation between $M$ is orientable and the normal bundle of $M$ in $\mathbb{R}^n$ is trivial?

Examples of CW-complex with finite homotopy groups

Persistence Homology on a grid Distance measure

Second Stiefel-Whitney class and first Pontryagin class of total spaces of linear $S^2$ bundles over $S^4$

Why $H_m(X\times Y)\simeq \bigoplus_{p+q=m} H_p(X;H_q(Y))$ for singular homology?

Condition for a function $\widetilde \phi:\mathbb{H}\rightarrow \mathbb{H}$ to descend to $S_g$

Inverse as a function of bijective paths are also homotopic

The map $p : S^1 → S^1$ given by $p(z) = z^2$ is a covering map. Generalize to $p(z) = z^n$.

Visualising $\pi_2(S^2)$ and $\pi_2(\mathbb{R}P^2)$

A fibration $p : E \rightarrow X$ is trivial iff $p$ is a homotopy equivalence

Computing homology groups, algebra confusion

Induced maps in local homology and isotopies

If $H \le \pi_1(X,x)$ is conjugate to $P_(\pi_1(Y, y))$, then $H \cong P_(\pi_1(Y, y'))$ for some $y' \in P^{-1}(x)$

Calculating the fundamental group of $S^1$ with SvK

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