User Dominic van der Zypen

3 votes

1 answer

1k views

Tournaments with exactly one directed Hamiltonian path

asked Jan 9, 2018 at 15:01

3 votes

1 answer

146 views

Maximal elements in the partially ordered set of image spaces

asked Jan 2, 2018 at 10:17

3 votes

0 answers

189 views

Conjecture on connected hypergraphs

asked Apr 7, 2022 at 19:46

3 votes

1 answer

492 views

Does the partition principle imply (DC)?

asked Apr 13, 2022 at 13:37

3 votes

2 answers

254 views

MAD family with the choosability property

asked Jun 7, 2022 at 11:09

3 votes

2 answers

264 views

Probability of picking neighbors in $\{1,\ldots, n\}$

asked Apr 25, 2022 at 13:55

3 votes

2 answers

299 views

Conflict-free coloring of $\mathbb{R}$ with the Euclidean topology

asked Feb 22, 2022 at 20:43

3 votes

1 answer

207 views

Is normalcy preserved under the swapping operation?

asked Jan 29, 2022 at 21:42

3 votes

1 answer

368 views

Behavior of biggest prime divisor of $n$ as $n$ grows large

asked Aug 13, 2021 at 11:32

3 votes

5 answers

380 views

Graph $G$ such that removing an edge leaves $G$ "unchanged"

asked Jul 27, 2021 at 20:45

3 votes

1 answer

175 views

Representing graphs by sets of small symmetric difference

asked Aug 7, 2021 at 20:07

3 votes

2 answers

504 views

"Pseudo-Boolean" lattice (almost every element has several complements)

asked Aug 23, 2021 at 10:44

3 votes

1 answer

193 views

Injections without fixed-points and the Axiom of Choice

asked Jan 4, 2022 at 10:50

3 votes

0 answers

227 views

A form of Hadwiger's conjecture for hypergraphs

asked Jan 5, 2022 at 17:05

3 votes

2 answers

142 views

Is $(\omega+1)^\omega/{\cal U}$ complete for ${\cal U}$ free ultrafilter?

asked Dec 12, 2021 at 14:12

3 votes

1 answer

118 views

Can every number be realised as the chromatic number of a countable hypergraph?

asked Sep 23, 2020 at 16:10

3 votes

2 answers

249 views

"Completion property" in $(\beta\omega,+)$

asked Nov 13, 2020 at 21:51

3 votes

1 answer

110 views

Shrinkable homogeneous compact and connected $T_2$-space

asked Nov 17, 2020 at 7:51

3 votes

1 answer

75 views

Injective choice function for finite Fano planes

asked Oct 24, 2020 at 6:30

3 votes

1 answer

188 views

A sequence of cardinal characteristics constructed with hypergraph coloring

asked Jan 3, 2021 at 6:02

3 votes

1 answer

193 views

${\frak b}$ and ${\frak d}$ in the Rudin-Keisler preordering

asked Feb 19, 2021 at 20:16

3 votes

1 answer

173 views

Celebrity vertices in graphs

asked Feb 24, 2021 at 14:00

3 votes

1 answer

278 views

Chromatic number of maximal linear $k$-regular hypergraphs on $\omega$

asked Mar 13, 2021 at 20:49

3 votes

0 answers

131 views

On a connectivity property of set systems

asked Apr 29, 2021 at 11:43

3 votes

1 answer

166 views

Coloring the uncountable Lebesgue-measurable sets of $\mathbb{R}$

asked Apr 21, 2021 at 11:35

3 votes

0 answers

262 views

"Matryoshka" sets and the Axiom of Choice

asked Jul 9, 2021 at 12:01

3 votes

1 answer

570 views

Magic circle (instead of magic square)

asked Jul 10, 2021 at 13:41

3 votes

0 answers

210 views

Weak Power Hypothesis with injections instead of bijections

asked Dec 17, 2022 at 12:56

3 votes

2 answers

209 views

Posets such that the collection of principal down-sets does not have property ${\bf B}$

asked Jul 21, 2023 at 13:21

3 votes

0 answers

58 views

Hamming representation number of a graph

asked Mar 6, 2023 at 16:13

Stack Exchange Network

1,209 Questions

Tournaments with exactly one directed Hamiltonian path

Maximal elements in the partially ordered set of image spaces

Conjecture on connected hypergraphs

Does the partition principle imply (DC)?

MAD family with the choosability property

Probability of picking neighbors in $\{1,\ldots, n\}$

Conflict-free coloring of $\mathbb{R}$ with the Euclidean topology

Is normalcy preserved under the swapping operation?

Behavior of biggest prime divisor of $n$ as $n$ grows large

Graph $G$ such that removing an edge leaves $G$ "unchanged"

Representing graphs by sets of small symmetric difference

"Pseudo-Boolean" lattice (almost every element has several complements)

Injections without fixed-points and the Axiom of Choice

A form of Hadwiger's conjecture for hypergraphs

Is $(\omega+1)^\omega/{\cal U}$ complete for ${\cal U}$ free ultrafilter?

Can every number be realised as the chromatic number of a countable hypergraph?

"Completion property" in $(\beta\omega,+)$

Shrinkable homogeneous compact and connected $T_2$-space

Injective choice function for finite Fano planes

A sequence of cardinal characteristics constructed with hypergraph coloring

${\frak b}$ and ${\frak d}$ in the Rudin-Keisler preordering

Celebrity vertices in graphs

Chromatic number of maximal linear $k$-regular hypergraphs on $\omega$

On a connectivity property of set systems

Coloring the uncountable Lebesgue-measurable sets of $\mathbb{R}$

"Matryoshka" sets and the Axiom of Choice

Magic circle (instead of magic square)

Weak Power Hypothesis with injections instead of bijections

Posets such that the collection of principal down-sets does not have property ${\bf B}$

Hamming representation number of a graph