Question

What is the meaning of my partially solved PDE?

score 107 · Answer 1 · 2026-04-06 21:12:22

107

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What is the meaning of my partially solved PDE?

Published on 06 Apr 2026 - 21:12

score 261 · Answer 2 · 2026-03-29 07:19:39

261

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Cutting a polygon into 2 or 3 smaller, rationally-scaled copies of itself?

Published on 29 Mar 2026 - 7:19

score 126 · Answer 3 · 2026-04-08 16:29:44

126

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Do we need the axiom of choice for determining the chromatic number of the graph with vertex set $\mathbb{Q}^n$ with forbidden distance equal to $1$?

Published on 08 Apr 2026 - 16:29

score 126 · Answer 4 · 2026-03-29 07:31:25

126

Views

Enumerating a subset of rationals: a variation on the Calkin–Wilf tree

Published on 29 Mar 2026 - 7:31

score 39 · Answer 5 · 2021-09-12 04:37:55

39

Views

Given a nonempty interval $I$, the set of $n$ such that there exists a rational in $I$ with reduced denominator $n$ is cofinite

Published on 12 Sep 2021 - 4:37

score 69 · Answer 6 · 2021-09-12 14:40:57

69

Views

Order property on dedekind cuts

Published on 12 Sep 2021 - 14:40

score 44 · Answer 7 · 2026-04-02 11:35:36

44

Views

What functions with source and target the rational numbers satisfy the intermediate value theorem?

Published on 02 Apr 2026 - 11:35

score 55 · Answer 8 · 2021-09-17 13:03:22

55

Views

Existence of special enumeration of the rationals

Published on 17 Sep 2021 - 13:03

score 46 · Answer 9 · 2026-03-29 19:10:58

46

Views

Existence of closures of sets

Published on 29 Mar 2026 - 19:10

score 75 · Answer 10 · 2026-04-05 20:19:22

75

Views

How to formulate the whole number part of decimal number in equation

Published on 05 Apr 2026 - 20:19

score 116 · Answer 11 · 2021-10-03 14:11:02

116

Views

Find all possible values of $f(2018)$

Published on 03 Oct 2021 - 14:11

score 189 · Answer 12 · 2026-04-07 04:40:51

189

Views

Rational point inside a rational polygon

Published on 07 Apr 2026 - 4:40

score 70 · Answer 13 · 2021-10-07 12:07:25

70

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How do you call the space $\mathbb{Q}^{\mathbb{N}}$?

Published on 07 Oct 2021 - 12:07

score 49 · Answer 14 · 2021-10-07 23:12:40

49

Views

To prove a set is countable, is it enough to show it is a subset of a countable set?

Published on 07 Oct 2021 - 23:12

score 137 · Answer 15 · 2021-10-09 09:16:08

137

Views

Is $\mathbb{Q}^{\mathbb{N}}$ strongly zero-dimensional?

Published on 09 Oct 2021 - 9:16

List Question

What is the meaning of my partially solved PDE?

Cutting a polygon into 2 or 3 smaller, rationally-scaled copies of itself?

Do we need the axiom of choice for determining the chromatic number of the graph with vertex set $\mathbb{Q}^n$ with forbidden distance equal to $1$?

Enumerating a subset of rationals: a variation on the Calkin–Wilf tree

Given a nonempty interval $I$, the set of $n$ such that there exists a rational in $I$ with reduced denominator $n$ is cofinite

Order property on dedekind cuts

What functions with source and target the rational numbers satisfy the intermediate value theorem?

Existence of special enumeration of the rationals

Existence of closures of sets

How to formulate the whole number part of decimal number in equation

Find all possible values of $f(2018)$

Rational point inside a rational polygon

How do you call the space $\mathbb{Q}^{\mathbb{N}}$?

To prove a set is countable, is it enough to show it is a subset of a countable set?

Is $\mathbb{Q}^{\mathbb{N}}$ strongly zero-dimensional?

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