Question

Existence of a nilpotent subgroup $N \leq G$ of step $\leq n$ such that a finite $A$ is in $K^{O_n(1)}$ left cosets of $N$

score 32 · Answer 1 · 2026-03-30 20:38:26

32

Views

Existence of a nilpotent subgroup $N \leq G$ of step $\leq n$ such that a finite $A$ is in $K^{O_n(1)}$ left cosets of $N$

Published on 30 Mar 2026 - 20:38

score 98 · Answer 2 · 2026-02-23 00:51:10

98

Views

Rewriting a set of integers to get rid of repetition but keeping subset sum ordering

Published on 23 Feb 2026 - 0:51

score 121 · Answer 3 · 2026-02-23 00:50:45

121

Views

What is the probability that $\exists N \in \mathbb{N}$ such that $\forall n > N$, $2n \in C + C$?

Published on 23 Feb 2026 - 0:50

score 54 · Answer 4 · 2026-02-23 00:49:22

54

Views

Does there exist such a non-trivial semigroup $S$ ($|S| > 1$), that $S \cong Add(S)$?

Published on 23 Feb 2026 - 0:49

score 3.7k · Answer 5 · 2026-03-17 09:09:59

3.7k

Views

Prove that $Sup(A + B) = Sup(A) + Sup(B)$

Published on 17 Mar 2026 - 9:09

score 196 · Answer 6 · 2026-03-17 19:49:22

196

Views

Following up with a previous question on $\sup(A)+\sup(B) = \sup(A + B)$

Published on 17 Mar 2026 - 19:49

score 123 · Answer 7 · 2026-02-23 00:50:35

123

Views

Minimum number of integers $a_1,....,a_m$ needed to express $2,...,n$ as $a_i + a_j$

Published on 23 Feb 2026 - 0:50

score 96 · Answer 8 · 2026-03-17 07:45:16

96

Views

How small can "spanning sumsets" of $[n]$ be?

Published on 17 Mar 2026 - 7:45

score 1.1k · Answer 9 · 2026-02-23 00:47:06

1.1k

Views

How do we know that $\mathbb{Z} + \sqrt{2}\mathbb{Z}$ isn't closed?

Published on 23 Feb 2026 - 0:47

score 474 · Answer 10 · 2026-02-23 00:49:33

474

Views

Showing the sum of two sets contains an interval - Baire's Theorem?

Published on 23 Feb 2026 - 0:49

score 105 · Answer 11 · 2026-03-17 16:13:52

105

Views

Maximal size of bounded “sparse” sets of natural numbers

Published on 17 Mar 2026 - 16:13

score 134 · Answer 12 · 2026-04-01 09:37:27

134

Views

Sidon sets in finite groups

Published on 01 Apr 2026 - 9:37

score 182 · Answer 13 · 2026-02-23 00:47:56

182

Views

Two uncountable subsets of real numbers without any interval and two relations

Published on 23 Feb 2026 - 0:47

score 218 · Answer 14 · 2026-04-01 11:32:40

218

Views

Sum-free sets in finite groups

Published on 01 Apr 2026 - 11:32

score 116 · Answer 15 · 2026-03-17 14:34:06

116

Views

Set $A$ with $|2A| \geq 100|A|$ but $|3A| < 1000|A|$

Published on 17 Mar 2026 - 14:34

List Question

Existence of a nilpotent subgroup $N \leq G$ of step $\leq n$ such that a finite $A$ is in $K^{O_n(1)}$ left cosets of $N$

Rewriting a set of integers to get rid of repetition but keeping subset sum ordering

What is the probability that $\exists N \in \mathbb{N}$ such that $\forall n > N$, $2n \in C + C$?

Does there exist such a non-trivial semigroup $S$ ($|S| > 1$), that $S \cong Add(S)$?

Prove that $Sup(A + B) = Sup(A) + Sup(B)$

Following up with a previous question on $\sup(A)+\sup(B) = \sup(A + B)$

Minimum number of integers $a_1,....,a_m$ needed to express $2,...,n$ as $a_i + a_j$

How small can "spanning sumsets" of $[n]$ be?

How do we know that $\mathbb{Z} + \sqrt{2}\mathbb{Z}$ isn't closed?

Showing the sum of two sets contains an interval - Baire's Theorem?

Maximal size of bounded “sparse” sets of natural numbers

Sidon sets in finite groups

Two uncountable subsets of real numbers without any interval and two relations

Sum-free sets in finite groups

Set $A$ with $|2A| \geq 100|A|$ but $|3A| < 1000|A|$

Trending Questions

Popular # Hahtags

Popular Questions