Question

Theorem 2.34 Baby Rudin (Compact subsets of metric spaces are closed): How is his proof general enough?

score 227 · Answer 1 · 2026-03-30 21:03:46

227

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Theorem 2.34 Baby Rudin (Compact subsets of metric spaces are closed): How is his proof general enough?

Published on 30 Mar 2026 - 21:03

score 95 · Answer 2 · 2019-02-18 23:24:25

95

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Is this enough to prove linear independence?

Published on 18 Feb 2019 - 23:24

score 328 · Answer 3 · 2026-03-30 14:43:33

328

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The degree extension of $\mathbb{Q}(\sqrt{2},\sqrt{3})/\mathbb{Q}(\sqrt{2})$ is at most $2$ because $[\mathbb{Q}(\sqrt{3}),\mathbb{Q}] = 2$

Published on 30 Mar 2026 - 14:43

score 39 · Answer 4 · 2026-03-29 12:05:28

39

Views

Showing that $\Bbb E(\Bbb E(Z\mid X,Y)\mid X)=\Bbb E(Z\mid X)$ if $X,Y,Z$ are random variables with $\Bbb E(|Y|)+\Bbb E(|Z|)<\infty$

Published on 29 Mar 2026 - 12:05

score 47 · Answer 5 · 2026-03-26 14:33:54

47

Views

Constructing a sum of squares in $\mathbb R[x]$ with given complex valuation

Published on 26 Mar 2026 - 14:33

score 704 · Answer 6 · 2019-02-19 22:07:06

704

Views

"A Simple Proof of Zorn's Lemma" article. (explanation of a step)

Published on 19 Feb 2019 - 22:07

score 223 · Answer 7 · 2026-03-25 14:25:45

223

Views

Where is it used that the symmetry conserves the symplectic form in noether's theorem.

Published on 25 Mar 2026 - 14:25

score 244 · Answer 8 · 2019-02-19 23:29:12

244

Views

A Proof of Zorn's Lemma

Published on 19 Feb 2019 - 23:29

score 80 · Answer 9 · 2026-03-25 09:47:00

80

Views

On why categories with coseparating sets and intersections have initial objects [Proof Explanation]

Published on 25 Mar 2026 - 9:47

score 83 · Answer 10 · 2026-03-25 17:38:26

83

Views

Spectral theory: Operator compact implies existence of convergent subsequence

Published on 25 Mar 2026 - 17:38

score 134 · Answer 11 · 2026-03-26 10:56:19

134

Views

Rudin Functional Analysis Theorem 3.25

Published on 26 Mar 2026 - 10:56

score 116 · Answer 12 · 2026-03-25 10:52:53

116

Views

Lemma 4.3. Aluffi Algebra Chapter VIII.

Published on 25 Mar 2026 - 10:52

score 209 · Answer 13 · 2026-03-30 05:32:17

209

Views

How does this list of optimal values prove Farkas' lemma?

Published on 30 Mar 2026 - 5:32

score 157 · Answer 14 · 2026-03-30 13:57:34

157

Views

Understanding a proof by Gallian that $A_5$ has no subgroup of order $30$.

Published on 30 Mar 2026 - 13:57

score 162 · Answer 15 · 2019-02-20 17:38:29

162

Views

Munkres Section 18 Theorem 18.2(e)

Published on 20 Feb 2019 - 17:38

List Question

Theorem 2.34 Baby Rudin (Compact subsets of metric spaces are closed): How is his proof general enough?

Is this enough to prove linear independence?

The degree extension of $\mathbb{Q}(\sqrt{2},\sqrt{3})/\mathbb{Q}(\sqrt{2})$ is at most $2$ because $[\mathbb{Q}(\sqrt{3}),\mathbb{Q}] = 2$

Showing that $\Bbb E(\Bbb E(Z\mid X,Y)\mid X)=\Bbb E(Z\mid X)$ if $X,Y,Z$ are random variables with $\Bbb E(|Y|)+\Bbb E(|Z|)<\infty$

Constructing a sum of squares in $\mathbb R[x]$ with given complex valuation

"A Simple Proof of Zorn's Lemma" article. (explanation of a step)

Where is it used that the symmetry conserves the symplectic form in noether's theorem.

A Proof of Zorn's Lemma

On why categories with coseparating sets and intersections have initial objects [Proof Explanation]

Spectral theory: Operator compact implies existence of convergent subsequence

Rudin Functional Analysis Theorem 3.25

Lemma 4.3. Aluffi Algebra Chapter VIII.

How does this list of optimal values prove Farkas' lemma?

Understanding a proof by Gallian that $A_5$ has no subgroup of order $30$.

Munkres Section 18 Theorem 18.2(e)

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