User Dominic van der Zypen

2 votes

1 answer

86 views

Hadwiger critical graphs of arbitrarily high chromatic number

asked Jan 6, 2018 at 16:54

2 votes

0 answers

105 views

Expected value of maximal accumulation of functions $f:\{1,\ldots,n\} \to \{1,\ldots,n\}$

asked Feb 23, 2018 at 7:19

2 votes

0 answers

90 views

Representable integer matrices

asked Mar 20, 2018 at 15:46

2 votes

0 answers

210 views

Countable non-commutative groups such that all proper subgroups are commutative

asked Mar 28, 2018 at 14:59

2 votes

1 answer

126 views

Strongly rigid connected $k$-regular graphs

asked Mar 29, 2018 at 8:15

2 votes

1 answer

314 views

Boolean completion of a partially ordered set

asked Apr 1, 2018 at 7:56

2 votes

1 answer

366 views

Punching a hole into $\mathbb{R}^\omega$

asked Jun 3, 2018 at 12:57

2 votes

1 answer

82 views

Minimal cutting sets in connected graphs

asked Jun 14, 2018 at 20:23

2 votes

1 answer

151 views

Homeomorphic open sets and total disconnectedness

asked May 31, 2018 at 14:12

2 votes

2 answers

122 views

Thick refinements of covers

asked May 25, 2018 at 13:47

2 votes

2 answers

182 views

Injective, but no bijective neighborhood map

asked May 28, 2018 at 7:11

2 votes

1 answer

139 views

Neighborhood maps for graphs $G$ with $\delta(G) \geq 2$

asked May 16, 2018 at 19:00

2 votes

1 answer

257 views

A stronger version of the Erdös-Faber-Lovasz conjecture?

asked Apr 28, 2018 at 13:04

2 votes

1 answer

94 views

Connected box products of Hausdorff spaces

asked Apr 11, 2018 at 7:16

2 votes

1 answer

109 views

Edge covers in infinite graphs

asked Nov 16, 2017 at 14:12

2 votes

3 answers

186 views

Infinite strongly rigid graphs

asked Nov 17, 2017 at 8:08

2 votes

1 answer

156 views

Continuous self-maps in the Golomb space that are neither increasing nor decreasing

asked Nov 13, 2017 at 9:58

2 votes

1 answer

102 views

Connected $T_2$ space with essentially no connected subspaces

asked Nov 14, 2017 at 7:17

2 votes

1 answer

258 views

Number of countable torsion-free groups

asked Nov 12, 2017 at 12:42

2 votes

1 answer

401 views

Perfect matchings in infinite graphs

asked Nov 30, 2017 at 10:56

2 votes

2 answers

484 views

Is $\text{Cont}(\mathbb{R},\mathbb{R})$ dense in $\mathbb{R}^\mathbb{R}$? [closed]

asked Nov 23, 2017 at 9:33

2 votes

1 answer

138 views

Is $({\cal P}(\omega), \leq_{\text{inj}})$ a distributive lattice?

asked Oct 25, 2017 at 5:22

2 votes

1 answer

256 views

Chains of maximum cardinality in distributive lattices

asked Oct 5, 2017 at 16:39

2 votes

2 answers

169 views

Decidability of matrix problem in ${\mathbb Z}/p{\mathbb Z}$

asked Oct 30, 2017 at 10:00

2 votes

1 answer

282 views

Infima in the Rudin-Keisler ordering

asked Oct 9, 2017 at 8:20

2 votes

1 answer

627 views

Sphere packing in $\{0,1\}^n$ with Hamming distance

asked Oct 10, 2017 at 13:10

2 votes

2 answers

134 views

Small dense subsets in "Hausdorff" hypergraphs

asked Sep 20, 2017 at 14:01

2 votes

1 answer

161 views

Adjoints of the interval topology functor

asked Sep 24, 2017 at 14:33

2 votes

3 answers

758 views

Mutually non-isomorphic connected graphs on $\kappa$ points

asked Sep 13, 2017 at 8:04

2 votes

1 answer

752 views

$\mathbb{R}^n\setminus \mathbb{Q}^n$ vs $(\mathbb{R}\setminus\mathbb{Q})^n$

asked Sep 4, 2017 at 7:03

Stack Exchange Network

1,209 Questions

Hadwiger critical graphs of arbitrarily high chromatic number

Expected value of maximal accumulation of functions $f:\{1,\ldots,n\} \to \{1,\ldots,n\}$

Representable integer matrices

Countable non-commutative groups such that all proper subgroups are commutative

Strongly rigid connected $k$-regular graphs

Boolean completion of a partially ordered set

Punching a hole into $\mathbb{R}^\omega$

Minimal cutting sets in connected graphs

Homeomorphic open sets and total disconnectedness

Thick refinements of covers

Injective, but no bijective neighborhood map

Neighborhood maps for graphs $G$ with $\delta(G) \geq 2$

A stronger version of the Erdös-Faber-Lovasz conjecture?

Connected box products of Hausdorff spaces

Edge covers in infinite graphs

Infinite strongly rigid graphs

Continuous self-maps in the Golomb space that are neither increasing nor decreasing

Connected $T_2$ space with essentially no connected subspaces

Number of countable torsion-free groups

Perfect matchings in infinite graphs

Is $\text{Cont}(\mathbb{R},\mathbb{R})$ dense in $\mathbb{R}^\mathbb{R}$? [closed]

Is $({\cal P}(\omega), \leq_{\text{inj}})$ a distributive lattice?

Chains of maximum cardinality in distributive lattices

Decidability of matrix problem in ${\mathbb Z}/p{\mathbb Z}$

Infima in the Rudin-Keisler ordering

Sphere packing in $\{0,1\}^n$ with Hamming distance

Small dense subsets in "Hausdorff" hypergraphs

Adjoints of the interval topology functor

Mutually non-isomorphic connected graphs on $\kappa$ points

$\mathbb{R}^n\setminus \mathbb{Q}^n$ vs $(\mathbb{R}\setminus\mathbb{Q})^n$