User Dominic van der Zypen

3 votes

1 answer

315 views

Product of sequences "slowly" converging to $0$

asked May 8, 2017 at 7:08

3 votes

1 answer

280 views

Connected Hausdorff space that is stable under collapsing two points

asked May 15, 2017 at 7:33

3 votes

1 answer

165 views

Bounded gaps between powers

asked May 16, 2017 at 6:03

3 votes

2 answers

176 views

Coloring hypergraphs with no singleton intersections

asked Jul 11, 2017 at 8:37

3 votes

0 answers

78 views

Nowhere dense covering number of a connected $T_2$ space

asked Jul 15, 2017 at 14:04

3 votes

2 answers

133 views

$T_2$-spaces with order-isomorphic topologies

asked Jul 19, 2017 at 4:51

3 votes

1 answer

71 views

Minimal subcoverings of a cover with finite intersection

asked Aug 12, 2017 at 13:33

3 votes

4 answers

653 views

Picking a real for every non-empty open set in $\mathbb{R}$

asked Jul 22, 2017 at 14:34

3 votes

2 answers

128 views

Connected weakly initial graph on $\kappa$ points

asked Sep 9, 2017 at 10:02

3 votes

1 answer

116 views

Hausdorff interval topology on distributive lattices

asked Sep 22, 2017 at 5:58

3 votes

2 answers

358 views

Order-preserving surjection ${\mathbb N}^{\mathbb N}\to [0,\infty)$

asked Sep 19, 2017 at 12:48

3 votes

1 answer

265 views

Antichains of maximum cardinality: posets vs lattices

asked Oct 4, 2017 at 15:18

3 votes

1 answer

238 views

Is the category of convergence spaces cartesian-closed?

asked Sep 25, 2017 at 8:42

3 votes

2 answers

312 views

Infinite Fano planes

asked Oct 26, 2017 at 5:54

3 votes

1 answer

276 views

Adjoints for the functor ${\bf Top}\to {\bf Conv}$

asked Oct 13, 2017 at 7:03

3 votes

1 answer

134 views

Unboundedness number and domination number of a poset $(P,\leq)$

asked Oct 16, 2017 at 6:32

3 votes

1 answer

260 views

Choice sets from above and below

asked Nov 7, 2017 at 6:43

3 votes

1 answer

184 views

Order-preserving surjective map $f: {\cal P}(\omega)/(fin) \to [0,1]$

asked Nov 3, 2017 at 13:41

3 votes

3 answers

341 views

Countably infinite posets isomorphic to its intervals

asked Nov 9, 2017 at 9:24

3 votes

1 answer

648 views

Subcovers without a choice set

asked Nov 10, 2017 at 6:11

3 votes

1 answer

446 views

Choice sets and the axiom of choice

asked Nov 13, 2017 at 7:54

3 votes

1 answer

143 views

The Wallman and interval topologies on non-principal ultrafilters with the Rudin-Keisler preorder

asked Nov 15, 2017 at 10:31

3 votes

1 answer

143 views

Ascending chain of vertex-transitive graphs

asked May 7, 2018 at 7:08

3 votes

1 answer

120 views

Connected $T_2$-space such that the open sets are closed under countable intersection

asked May 18, 2018 at 10:40

3 votes

1 answer

190 views

Is there a connected $T_2$-topology on $\mathbb{Q}$ that is coarser than the Euclidean one?

asked May 19, 2018 at 13:30

3 votes

2 answers

153 views

Vertex-covering number of $L(K_n)$

asked May 13, 2018 at 19:02

3 votes

1 answer

437 views

Is $\Box_{n\in\omega}[0,1]$ connected?

asked Apr 7, 2018 at 12:05

3 votes

1 answer

180 views

Non-trivial parity maps in graphs

asked Mar 2, 2018 at 8:12

3 votes

1 answer

118 views

Non-homogenizable topological spaces

asked Feb 25, 2018 at 14:19

3 votes

2 answers

332 views

Graph of functions sharing a point

asked Feb 22, 2018 at 16:17

Stack Exchange Network

1,209 Questions

Product of sequences "slowly" converging to $0$

Connected Hausdorff space that is stable under collapsing two points

Bounded gaps between powers

Coloring hypergraphs with no singleton intersections

Nowhere dense covering number of a connected $T_2$ space

$T_2$-spaces with order-isomorphic topologies

Minimal subcoverings of a cover with finite intersection

Picking a real for every non-empty open set in $\mathbb{R}$

Connected weakly initial graph on $\kappa$ points

Hausdorff interval topology on distributive lattices

Order-preserving surjection ${\mathbb N}^{\mathbb N}\to [0,\infty)$

Antichains of maximum cardinality: posets vs lattices

Is the category of convergence spaces cartesian-closed?

Infinite Fano planes

Adjoints for the functor ${\bf Top}\to {\bf Conv}$

Unboundedness number and domination number of a poset $(P,\leq)$

Choice sets from above and below

Order-preserving surjective map $f: {\cal P}(\omega)/(fin) \to [0,1]$

Countably infinite posets isomorphic to its intervals

Subcovers without a choice set

Choice sets and the axiom of choice

The Wallman and interval topologies on non-principal ultrafilters with the Rudin-Keisler preorder

Ascending chain of vertex-transitive graphs

Connected $T_2$-space such that the open sets are closed under countable intersection

Is there a connected $T_2$-topology on $\mathbb{Q}$ that is coarser than the Euclidean one?

Vertex-covering number of $L(K_n)$

Is $\Box_{n\in\omega}[0,1]$ connected?

Non-trivial parity maps in graphs

Non-homogenizable topological spaces

Graph of functions sharing a point