Question

how to show that sin(x) is not continuous with this topology

score 386 · Answer 1 · 2026-04-11 20:14:08

386

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how to show that sin(x) is not continuous with this topology

Published on 11 Apr 2026 - 20:14

score 1.2k · Answer 2 · 2026-04-11 01:06:29

1.2k

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Where to start learning topology?

Published on 11 Apr 2026 - 1:06

score 101 · Answer 3 · 2026-04-09 09:38:45

101

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What do opens in the product topology over $\mathbb{Z}_p$ look like?

Published on 09 Apr 2026 - 9:38

score 182 · Answer 4 · 2026-04-14 23:46:24

182

Views

Do dense topological subgroups always have the same finite quotients as their underlying bigger topological subgroup?

Published on 14 Apr 2026 - 23:46

score 546 · Answer 5 · 2026-04-09 12:37:50

546

Views

Understanding Pre-Measures and Extensions of Measures in Folland

Published on 09 Apr 2026 - 12:37

score 251 · Answer 6 · 2026-04-16 12:57:19

251

Views

Express set $[a,b] \cup [c,d]$ as the difference of two intervals

Published on 16 Apr 2026 - 12:57

score 509 · Answer 7 · 2026-04-14 17:36:59

509

Views

To prove that a given set is a topology

Published on 14 Apr 2026 - 17:36

score 522 · Answer 8 · 2026-04-14 04:12:40

522

Views

Show there exists a homeomorphism between Disjoint Union and Product

Published on 14 Apr 2026 - 4:12

score 64 · Answer 9 · 2026-04-16 22:34:26

64

Views

Checking whether a given space is indiscrete or not

Published on 16 Apr 2026 - 22:34

score 1.6k · Answer 10 · 2026-04-16 15:50:09

1.6k

Views

Prob. 2 (d), Sec. 27, in Munkres' TOPOLOGY, 2nd ed: If $A$ is compact and $U$ is an open set containing $A$, then . . .

Published on 16 Apr 2026 - 15:50

score 821 · Answer 11 · 2026-04-15 10:57:49

821

Views

Show that this topology on the sphere is Hausdorff

Published on 15 Apr 2026 - 10:57

score 88 · Answer 12 · 2026-04-12 15:17:07

88

Views

$z \rightarrow z^n$ is unbranched on $\mathbb{C}^*$

Published on 12 Apr 2026 - 15:17

score 2.9k · Answer 13 · 2026-04-15 10:03:38

2.9k

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Which of the following statement is True ?

Published on 15 Apr 2026 - 10:03

score 40 · Answer 14 · 2026-04-15 14:17:18

40

Views

Given two topologies on a set , prove that the set is finite.

Published on 15 Apr 2026 - 14:17

score 61 · Answer 15 · 2026-04-11 19:06:13

61

Views

$VV^{-1} \subseteq U$

Published on 11 Apr 2026 - 19:06

List Question

how to show that sin(x) is not continuous with this topology

Where to start learning topology?

What do opens in the product topology over $\mathbb{Z}_p$ look like?

Do dense topological subgroups always have the same finite quotients as their underlying bigger topological subgroup?

Understanding Pre-Measures and Extensions of Measures in Folland

Express set $[a,b] \cup [c,d]$ as the difference of two intervals

To prove that a given set is a topology

Show there exists a homeomorphism between Disjoint Union and Product

Checking whether a given space is indiscrete or not

Prob. 2 (d), Sec. 27, in Munkres' TOPOLOGY, 2nd ed: If $A$ is compact and $U$ is an open set containing $A$, then . . .

Show that this topology on the sphere is Hausdorff

$z \rightarrow z^n$ is unbranched on $\mathbb{C}^*$

Which of the following statement is True ?

Given two topologies on a set , prove that the set is finite.

$VV^{-1} \subseteq U$

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