Question

Conjecture about boundary commuting with union

score 46 · Answer 1 · 2026-03-28 13:59:57

46

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Conjecture about boundary commuting with union

Published on 28 Mar 2026 - 13:59

score 2.8k · Answer 2 · 2023-12-26 04:13:22

2.8k

Views

Conjectures for finite groups that fail with large counterexamples

Published on 26 Dec 2023 - 4:13

score 561 · Answer 3 · 2026-04-06 14:37:06

561

Views

When can products of linear terms differ by a constant?

Published on 06 Apr 2026 - 14:37

score 38 · Answer 4 · 2023-12-28 13:04:16

38

Views

Does the relative complement behave like the complement?

Published on 28 Dec 2023 - 13:04

score 140 · Answer 5 · 2026-04-01 15:23:26

140

Views

Examples of PDEs that found application after discovery

Published on 01 Apr 2026 - 15:23

score 75 · Answer 6 · 2023-12-29 10:06:06

75

Views

Trying to find a counterexample about distance in topology

Published on 29 Dec 2023 - 10:06

score 187 · Answer 7 · 2023-12-30 00:10:17

187

Views

Revealing $e$ in real integrals without $e$ or $e^x$ in the integrand

Published on 30 Dec 2023 - 0:10

score 152 · Answer 8 · 2026-02-23 05:39:34

152

Views

Examples of "unexpected" characteristic subgroups

Published on 23 Feb 2026 - 5:39

score 132 · Answer 9 · 2026-04-02 21:14:32

132

Views

Reference request : The smallest integer solution to $313(x^3+y^3)=z^3$ has more than $1000$ digits!

Published on 02 Apr 2026 - 21:14

score 497 · Answer 10 · 2026-04-02 15:53:21

497

Views

Let $A\subset\mathbb{R}$ be an uncountable set of irrational numbers. Does there exist a finite $B\subset A$ such that $\sum_{x\in B} x\in\mathbb{Q}?$

Published on 02 Apr 2026 - 15:53

score 14 · Answer 11 · 2026-02-23 13:28:37

14

Views

Regularity conditions needed for divergence to equal "flux density"? (I.e. for "coordinate-free definition" to be valid?)

Published on 23 Feb 2026 - 13:28

score 46 · Answer 12 · 2026-04-02 15:53:11

46

Views

For an uncountable set of irrationals whose countable subsets sums all converge, is there one such countable subset which sums to a rational?

Published on 02 Apr 2026 - 15:53

score 112 · Answer 13 · 2026-03-28 10:41:25

112

Views

If $f$ and $g$ are functions with the same stationary points satisfying the PL Inequality does it hold for f + g?

Published on 28 Mar 2026 - 10:41

score 69 · Answer 14 · 2024-01-05 09:43:15

69

Views

Are there two morphisms f and g between complexes which induce the same morphisms of cohomology but are not equivalent in the derived category?

Published on 05 Jan 2024 - 9:43

score 89 · Answer 15 · 2026-02-23 23:51:52

89

Views

For a differentiable function $f$ , does this mean value theorem iteration method converge to the root of $f?$

Published on 23 Feb 2026 - 23:51

List Question

Conjecture about boundary commuting with union

Conjectures for finite groups that fail with large counterexamples

When can products of linear terms differ by a constant?

Does the relative complement behave like the complement?

Examples of PDEs that found application after discovery

Trying to find a counterexample about distance in topology

Revealing $e$ in real integrals without $e$ or $e^x$ in the integrand

Examples of "unexpected" characteristic subgroups

Reference request : The smallest integer solution to $313(x^3+y^3)=z^3$ has more than $1000$ digits!

Let $A\subset\mathbb{R}$ be an uncountable set of irrational numbers. Does there exist a finite $B\subset A$ such that $\sum_{x\in B} x\in\mathbb{Q}?$

Regularity conditions needed for divergence to equal "flux density"? (I.e. for "coordinate-free definition" to be valid?)

For an uncountable set of irrationals whose countable subsets sums all converge, is there one such countable subset which sums to a rational?

If $f$ and $g$ are functions with the same stationary points satisfying the PL Inequality does it hold for f + g?

Are there two morphisms f and g between complexes which induce the same morphisms of cohomology but are not equivalent in the derived category?

For a differentiable function $f$ , does this mean value theorem iteration method converge to the root of $f?$

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