Question

What is a regressive set?

score 84 · Answer 1 · 2026-04-11 11:37:23

84

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What is a regressive set?

Published on 11 Apr 2026 - 11:37

score 151 · Answer 2 · 2026-04-16 13:56:22

151

Views

$f$ is continuous on $[a,b]$, differentiable on $(a,b)$ , why does that imply that $g(x)=\frac {f(x)} x$?

Published on 16 Apr 2026 - 13:56

score 162 · Answer 3 · 2026-04-13 14:32:46

162

Views

Equivalence of two definitions of the derivative of a real function

Published on 13 Apr 2026 - 14:32

score 78 · Answer 4 · 2026-04-16 09:01:30

78

Views

Difference between talking about collection $\{G_\alpha\}$ of open sets and finite collection of $G_1,\dots,G_n$ of open sets

Published on 16 Apr 2026 - 9:01

score 101 · Answer 5 · 2026-04-11 14:20:13

101

Views

How to find out who firstly introduced a mathematical concept?

Published on 11 Apr 2026 - 14:20

score 18.4k · Answer 6 · 2026-04-11 12:28:02

18.4k

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How to find the degree of a field extension

Published on 11 Apr 2026 - 12:28

score 1.8k · Answer 7 · 2026-04-14 01:33:05

1.8k

Views

Categorical definition of subdomain

Published on 14 Apr 2026 - 1:33

score 116 · Answer 8 · 2026-04-13 02:51:08

116

Views

Definition of Dihedral group via semidirect product

Published on 13 Apr 2026 - 2:51

score 111 · Answer 9 · 2026-04-16 23:20:08

111

Views

Does this definition of the "roots" of an element of an arbitary $R$-algebra make sense? If so, where can I learn more?

Published on 16 Apr 2026 - 23:20

score 1.4k · Answer 10 · 2026-04-11 04:21:45

1.4k

Views

Example of H-set

Published on 11 Apr 2026 - 4:21

score 220 · Answer 11 · 2026-04-17 13:00:00

220

Views

About the function $f(x)=\sin x\ln x^2$ and derivative definition

Published on 17 Apr 2026 - 13:00

score 188 · Answer 12 · 2026-04-12 03:07:58

188

Views

A Question on a claim regarding the notion of "space" in "Indiscrete Thoughts"

Published on 12 Apr 2026 - 3:07

score 945 · Answer 13 · 2026-04-12 16:06:38

945

Views

Formal definition of forgetful functor

Published on 12 Apr 2026 - 16:06

score 158 · Answer 14 · 2026-04-14 17:50:34

158

Views

How to formalize that $\lim\limits_{x \to +\infty} \frac{f(x)}{g(x)} = 0 \implies$ $g$ "grows faster" than $f$?

Published on 14 Apr 2026 - 17:50

score 132 · Answer 15 · 2026-04-14 19:27:17

132

Views

$(+\infty,+\infty,\cdots,+\infty)$ exists in $\mathbb{R^{n}}$?

Published on 14 Apr 2026 - 19:27

List Question

What is a regressive set?

$f$ is continuous on $[a,b]$, differentiable on $(a,b)$ , why does that imply that $g(x)=\frac {f(x)} x$?

Equivalence of two definitions of the derivative of a real function

Difference between talking about collection $\{G_\alpha\}$ of open sets and finite collection of $G_1,\dots,G_n$ of open sets

How to find out who firstly introduced a mathematical concept?

How to find the degree of a field extension

Categorical definition of subdomain

Definition of Dihedral group via semidirect product

Does this definition of the "roots" of an element of an arbitary $R$-algebra make sense? If so, where can I learn more?

Example of H-set

About the function $f(x)=\sin x\ln x^2$ and derivative definition

A Question on a claim regarding the notion of "space" in "Indiscrete Thoughts"

Formal definition of forgetful functor

How to formalize that $\lim\limits_{x \to +\infty} \frac{f(x)}{g(x)} = 0 \implies$ $g$ "grows faster" than $f$?

$(+\infty,+\infty,\cdots,+\infty)$ exists in $\mathbb{R^{n}}$?

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