User Dominic van der Zypen

1 vote

0 answers

58 views

Hadwiger number and minimal degree (II)

asked Nov 27, 2021 at 20:21

1 vote

0 answers

64 views

Can $\delta(G)$ get arbitrarily large in relation to $\eta(G)$?

asked Dec 2, 2021 at 13:40

1 vote

1 answer

122 views

Degeneracy vs minimal degree in critical graphs

asked Dec 14, 2021 at 15:02

1 vote

2 answers

126 views

Number of edges in $k$-uniform linear hypergraph

asked Dec 15, 2021 at 21:16

1 vote

2 answers

125 views

Distribution of pre-images of the divisor function $\sigma$

asked Oct 26, 2020 at 10:15

1 vote

1 answer

267 views

Does a subset of positive measure in $\mathbb{R}$ locally "almost" have density $1$? [closed]

asked Dec 1, 2020 at 9:53

1 vote

0 answers

78 views

Expected value of the difference of the Hadwiger number and the chromatic number

asked Dec 12, 2020 at 18:37

1 vote

1 answer

143 views

Is the Rudin-Keisler ordering a continuous relation?

asked Jan 10, 2021 at 16:43

1 vote

0 answers

114 views

Connected partition number of a graph

asked Jan 17, 2021 at 11:20

1 vote

1 answer

93 views

Minimizing the set of monochromatic edges

asked Jan 27, 2021 at 13:31

1 vote

2 answers

257 views

"Coloring" the greatest common divisor relation

asked May 24, 2021 at 12:46

1 vote

1 answer

281 views

Strictly descending sequences of sets, the Partition Principle, and the Boolean Prime Ideal Theorem

asked Jul 14, 2021 at 8:16

1 vote

1 answer

94 views

Large chromatic number in hypergraphs with large edges

asked Jun 20, 2021 at 7:25

1 vote

1 answer

233 views

Graph $G=(V,E)$ with $\chi(G)$ finite and $\text{Col}(G)$ infinite

asked Jun 20, 2021 at 15:22

1 vote

2 answers

186 views

Hamiltonian cycle in $S_n$ with transpositions

asked Jun 25, 2021 at 6:01

1 vote

1 answer

83 views

Finite graph not embeddable in $H(n,2)$

asked May 4, 2021 at 12:19

1 vote

1 answer

141 views

Expectation of maximum of all period lengths of functions $f:\{1,\ldots,n\}\to\{1,\ldots,n\}$

asked Apr 7, 2021 at 9:31

1 vote

1 answer

154 views

Fibonacci with seeds, modulo $n$

asked Apr 8, 2021 at 15:44

1 vote

1 answer

98 views

Fano-like planes on $\omega$

asked Mar 11, 2021 at 8:04

1 vote

1 answer

72 views

Uniform hypergraphs with small edge intersections and propery ${\bf B}$

asked Jan 27, 2023 at 9:21

1 vote

1 answer

164 views

Partitioning $\mathbb R$ into sets such that no mutual points have distance $1$ [closed]

asked Jan 3, 2023 at 17:15

1 vote

0 answers

72 views

Shuffling $\omega$ fairly for a fixed partition

asked Jan 7, 2023 at 21:00

1 vote

2 answers

107 views

Measurability of Brjuno numbers

asked Jan 18, 2023 at 9:37

1 vote

1 answer

64 views

Can $\omega$ be parity-separated with finitely many bijections?

asked Jan 14, 2023 at 17:55

1 vote

1 answer

130 views

Is the chromatic number of hypergraphs downward continuous?

asked May 20, 2023 at 19:11

1 vote

1 answer

55 views

Hamiltonian path in total graph

asked Apr 14, 2023 at 11:08

1 vote

1 answer

81 views

Is the class of rc-spaces closed under products?

asked Dec 2, 2022 at 20:34

1 vote

2 answers

143 views

Does $\{0,1\}^{<\omega}$ have a Hamiltonian path?

asked Nov 15, 2022 at 20:17

1 vote

0 answers

104 views

On a combinatorial design inspired by a football (soccer) tournament

asked Oct 22, 2022 at 20:41

1 vote

2 answers

135 views

Do graphs with identical degree matrix have the same chromatic number?

asked Aug 19, 2022 at 15:45

Stack Exchange Network

1,211 Questions

Hadwiger number and minimal degree (II)

Can $\delta(G)$ get arbitrarily large in relation to $\eta(G)$?

Degeneracy vs minimal degree in critical graphs

Number of edges in $k$-uniform linear hypergraph

Distribution of pre-images of the divisor function $\sigma$

Does a subset of positive measure in $\mathbb{R}$ locally "almost" have density $1$? [closed]

Expected value of the difference of the Hadwiger number and the chromatic number

Is the Rudin-Keisler ordering a continuous relation?

Connected partition number of a graph

Minimizing the set of monochromatic edges

"Coloring" the greatest common divisor relation

Strictly descending sequences of sets, the Partition Principle, and the Boolean Prime Ideal Theorem

Large chromatic number in hypergraphs with large edges

Graph $G=(V,E)$ with $\chi(G)$ finite and $\text{Col}(G)$ infinite

Hamiltonian cycle in $S_n$ with transpositions

Finite graph not embeddable in $H(n,2)$

Expectation of maximum of all period lengths of functions $f:\{1,\ldots,n\}\to\{1,\ldots,n\}$

Fibonacci with seeds, modulo $n$

Fano-like planes on $\omega$

Uniform hypergraphs with small edge intersections and propery ${\bf B}$

Partitioning $\mathbb R$ into sets such that no mutual points have distance $1$ [closed]

Shuffling $\omega$ fairly for a fixed partition

Measurability of Brjuno numbers

Can $\omega$ be parity-separated with finitely many bijections?

Is the chromatic number of hypergraphs downward continuous?

Hamiltonian path in total graph

Is the class of rc-spaces closed under products?

Does $\{0,1\}^{<\omega}$ have a Hamiltonian path?

On a combinatorial design inspired by a football (soccer) tournament

Do graphs with identical degree matrix have the same chromatic number?