Question

What's the definition of proper subspace of a vector space used in Rudin's Functional analysis

score 989 · Answer 1 · 2026-03-26 06:22:26

989

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What's the definition of proper subspace of a vector space used in Rudin's Functional analysis

Published on 26 Mar 2026 - 6:22

score 100 · Answer 2 · 2026-03-26 09:07:14

100

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Elementary Substructures vs. Structures

Published on 26 Mar 2026 - 9:07

score 93 · Answer 3 · 2018-12-01 10:14:44

93

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Complex measure of empty set.

Published on 01 Dec 2018 - 10:14

score 22 · Answer 4 · 2018-12-01 11:33:04

22

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Am I properly negating the definition of this set?

Published on 01 Dec 2018 - 11:33

score 82 · Answer 5 · 2018-12-01 12:42:50

82

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In the definition of partial derivative, why the function must be defined on an open set?

Published on 01 Dec 2018 - 12:42

score 119 · Answer 6 · 2026-03-26 21:19:08

119

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Definition of rational numbers

Published on 26 Mar 2026 - 21:19

score 2.1k · Answer 7 · 2026-03-26 04:16:13

2.1k

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Help in understanding why the arithmetic derivative is well-defined.

Published on 26 Mar 2026 - 4:16

score 489 · Answer 8 · 2018-12-02 19:02:21

489

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Definition of the Lebesgue number of a open cover

Published on 02 Dec 2018 - 19:02

score 39 · Answer 9 · 2018-12-03 15:34:55

39

Views

A concern on the definition of compactness in a metric space

Published on 03 Dec 2018 - 15:34

score 369 · Answer 10 · 2018-12-04 06:47:01

369

Views

Definition of weakly compact operator

Published on 04 Dec 2018 - 6:47

score 27 · Answer 11 · 2018-12-05 08:09:21

27

Views

$G$ is an $(x,y)$-graph if $x>C(G)$ and $y>I(G)$

Published on 05 Dec 2018 - 8:09

score 271 · Answer 12 · 2018-12-05 09:49:04

271

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Why is convex conjugate defined on functions taking values on extended real line?

Published on 05 Dec 2018 - 9:49

score 153 · Answer 13 · 2018-12-06 00:57:05

153

Views

When I'm given $\sin(x)$, what goes inside of the $x$?

Published on 06 Dec 2018 - 0:57

score 39 · Answer 14 · 2018-12-06 05:03:07

39

Views

Generalization of lower semicontinuous functions to Banach space-valued functions

Published on 06 Dec 2018 - 5:03

score 174 · Answer 15 · 2026-03-25 16:03:42

174

Views

Confusion over the word "ratio" in the definition of $\pi$

Published on 25 Mar 2026 - 16:03

List Question

What's the definition of proper subspace of a vector space used in Rudin's Functional analysis

Elementary Substructures vs. Structures

Complex measure of empty set.

Am I properly negating the definition of this set?

In the definition of partial derivative, why the function must be defined on an open set?

Definition of rational numbers

Help in understanding why the arithmetic derivative is well-defined.

Definition of the Lebesgue number of a open cover

A concern on the definition of compactness in a metric space

Definition of weakly compact operator

$G$ is an $(x,y)$-graph if $x>C(G)$ and $y>I(G)$

Why is convex conjugate defined on functions taking values on extended real line?

When I'm given $\sin(x)$, what goes inside of the $x$?

Generalization of lower semicontinuous functions to Banach space-valued functions

Confusion over the word "ratio" in the definition of $\pi$

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