Question

If $\overline{U \cap Z}$ is compact in $\bar U$, how does it follow that $\overline{U \cap Z}$ is compact in $Z$?

score 48 · Answer 1 · 2026-03-28 20:09:33

48

Views

If $\overline{U \cap Z}$ is compact in $\bar U$, how does it follow that $\overline{U \cap Z}$ is compact in $Z$?

Published on 28 Mar 2026 - 20:09

score 61 · Answer 2 · 2026-03-25 03:18:01

61

Views

How does $k!$ come out from the proof?

Published on 25 Mar 2026 - 3:18

score 79 · Answer 3 · 2026-03-25 03:19:22

79

Views

How is the product $c_I \alpha^I$ defined?

Published on 25 Mar 2026 - 3:19

score 132 · Answer 4 · 2026-03-25 13:53:19

132

Views

Proof Assistance / Verification: Distribution Theory

Published on 25 Mar 2026 - 13:53

score 37 · Answer 5 · 2026-03-25 19:02:03

37

Views

How is the triangle inequality being used here?

Published on 25 Mar 2026 - 19:02

score 1.8k · Answer 6 · 2018-07-07 01:04:06

1.8k

Views

Proof explanation of Hall's Marriage Theorem?

Published on 07 Jul 2018 - 1:04

score 94 · Answer 7 · 2018-07-07 02:12:40

94

Views

Formal Two-Column Proof of Kuratowski's Ordered Pair

Published on 07 Jul 2018 - 2:12

score 2.3k · Answer 8 · 2026-03-26 18:59:05

2.3k

Views

Graph: Does simple path mean no repeated vertices or edges?

Published on 26 Mar 2026 - 18:59

score 115 · Answer 9 · 2026-03-25 06:04:20

115

Views

Lang's proof of the uniqueness of multiplicities for semisimple modules

Published on 25 Mar 2026 - 6:04

score 628 · Answer 10 · 2018-07-08 18:46:22

628

Views

Doubt in the proof of Implicit function theorem by Rudin's PMA,(Theorem 9.28,p224-227)

Published on 08 Jul 2018 - 18:46

score 197 · Answer 11 · 2026-03-31 06:17:08

197

Views

Example 5.37 (Eigenspace) of Linear Algebra Done Right, by Sheldon Axler

Published on 31 Mar 2026 - 6:17

score 85 · Answer 12 · 2026-03-25 23:13:53

85

Views

Topology and groupoids, proof 7.2.5 lemma.

Published on 25 Mar 2026 - 23:13

score 670 · Answer 13 · 2026-03-25 15:47:23

670

Views

Understanding Schwartz Space / How to show a function is or is not in Schwartz Space

Published on 25 Mar 2026 - 15:47

score 299 · Answer 14 · 2026-03-25 13:54:10

299

Views

Applying the generalised Leibniz rule multi-index form

Published on 25 Mar 2026 - 13:54

score 156 · Answer 15 · 2018-07-09 20:44:12

156

Views

Cantor function $\sum (f_k-f_{k+1})$ converges uniformly on $[0,1]$

Published on 09 Jul 2018 - 20:44

List Question

If $\overline{U \cap Z}$ is compact in $\bar U$, how does it follow that $\overline{U \cap Z}$ is compact in $Z$?

How does $k!$ come out from the proof?

How is the product $c_I \alpha^I$ defined?

Proof Assistance / Verification: Distribution Theory

How is the triangle inequality being used here?

Proof explanation of Hall's Marriage Theorem?

Formal Two-Column Proof of Kuratowski's Ordered Pair

Graph: Does simple path mean no repeated vertices or edges?

Lang's proof of the uniqueness of multiplicities for semisimple modules

Doubt in the proof of Implicit function theorem by Rudin's PMA,(Theorem 9.28,p224-227)

Example 5.37 (Eigenspace) of Linear Algebra Done Right, by Sheldon Axler

Topology and groupoids, proof 7.2.5 lemma.

Understanding Schwartz Space / How to show a function is or is not in Schwartz Space

Applying the generalised Leibniz rule multi-index form

Cantor function $\sum (f_k-f_{k+1})$ converges uniformly on $[0,1]$

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