User Dominic van der Zypen

4 votes

3 answers

593 views

Infinite topological spaces such that every subset is a retract

asked Dec 9, 2014 at 15:59

4 votes

1 answer

269 views

Does "Every infinite set is splittable" imply $\mathsf{AC}$? [duplicate]

asked Apr 19, 2016 at 8:43

4 votes

2 answers

329 views

Is injectivity of $2^{(\ldots)}$ weaker than $\mathsf{GCH}$? [duplicate]

asked Apr 20, 2016 at 12:54

4 votes

1 answer

416 views

"Lexicographic" ordering on ${\cal P}(\omega)$

asked Apr 13, 2016 at 13:23

4 votes

1 answer

290 views

Stronger form of connectedness than path-connectedness

asked Mar 31, 2016 at 11:55

4 votes

1 answer

349 views

Coefficients of factors of $x^n-1\in\mathbb{Q}[x]$

asked Jul 15, 2016 at 7:31

4 votes

0 answers

184 views

Hadwiger's conjecture in the language of graph homomorphisms

asked Sep 18, 2016 at 12:54

4 votes

1 answer

118 views

"Discrete jumps" in the collection of all topologies on a set $X$

asked Apr 24, 2016 at 13:37

4 votes

1 answer

218 views

Minimal zero-dimensional Hausdorff spaces

asked May 2, 2016 at 13:44

4 votes

1 answer

276 views

Is it consistent that the gaps between cardinals $\kappa$ and $2^\kappa$ "get larger and larger"?

asked May 10, 2016 at 7:13

4 votes

2 answers

658 views

Admissible and proper topologies on $C(X,Y)$

asked Jun 17, 2016 at 9:12

4 votes

3 answers

514 views

Non-principal prime ideals in infinite distributive lattices

asked Oct 6, 2015 at 6:30

4 votes

1 answer

755 views

Surjectivity of self-isometries as property of metric spaces

asked Jul 29, 2015 at 11:27

3 votes

1 answer

284 views

Cardinalities of maximal towers in ${\cal P}(\omega)$

asked Dec 22, 2015 at 20:19

3 votes

1 answer

248 views

Does this version of Hadwiger's conjecture hold for graphs with infinite chromatic number?

asked Oct 23, 2015 at 7:11

3 votes

1 answer

796 views

Intersection of compact sets in the compact-open topology

asked Sep 4, 2015 at 13:36

3 votes

1 answer

318 views

Properties of the interval topology of the lattice of functions

asked Aug 26, 2015 at 6:54

3 votes

1 answer

133 views

Path-connected interval topologies

asked Aug 26, 2015 at 12:20

3 votes

2 answers

375 views

Embedding finite lattices into the lattice of partitions of a finite set

asked Jul 7, 2015 at 8:48

3 votes

1 answer

294 views

Implications between different covering properties of spaces

asked Jun 23, 2015 at 7:48

3 votes

1 answer

138 views

Incomplete lattice homomorphisms between complete lattices (2)

asked Jul 9, 2015 at 8:43

3 votes

0 answers

104 views

Hausdorff spaces with lattice isomorphism between the topologies [closed]

asked Aug 5, 2015 at 7:08

3 votes

0 answers

240 views

Density of set of unique sums

asked Jun 1, 2016 at 12:42

3 votes

1 answer

107 views

Topology with no direct lower neighbor

asked Apr 28, 2016 at 6:45

3 votes

2 answers

117 views

Does the collection of coverings on a set $X$ form a lattice when ordered by refinement?

asked Jul 5, 2016 at 19:14

3 votes

1 answer

135 views

Discrepancy of elements in minimal members of a union-closed set

asked Feb 4, 2016 at 10:44

3 votes

1 answer

130 views

Minimal number of vertices in a graph with special Hadwiger partitions

asked Jan 2, 2016 at 16:02

3 votes

1 answer

998 views

"Universal maps" as a universal property

asked Dec 10, 2014 at 13:00

3 votes

2 answers

719 views

Topological retraction vs categorical retraction

asked Dec 8, 2014 at 9:50

3 votes

1 answer

93 views

Minor ordering for finite graphs

asked Dec 4, 2014 at 16:03

Stack Exchange Network

1,209 Questions

Infinite topological spaces such that every subset is a retract

Does "Every infinite set is splittable" imply $\mathsf{AC}$? [duplicate]

Is injectivity of $2^{(\ldots)}$ weaker than $\mathsf{GCH}$? [duplicate]

"Lexicographic" ordering on ${\cal P}(\omega)$

Stronger form of connectedness than path-connectedness

Coefficients of factors of $x^n-1\in\mathbb{Q}[x]$

Hadwiger's conjecture in the language of graph homomorphisms

"Discrete jumps" in the collection of all topologies on a set $X$

Minimal zero-dimensional Hausdorff spaces

Is it consistent that the gaps between cardinals $\kappa$ and $2^\kappa$ "get larger and larger"?

Admissible and proper topologies on $C(X,Y)$

Non-principal prime ideals in infinite distributive lattices

Surjectivity of self-isometries as property of metric spaces

Cardinalities of maximal towers in ${\cal P}(\omega)$

Does this version of Hadwiger's conjecture hold for graphs with infinite chromatic number?

Intersection of compact sets in the compact-open topology

Properties of the interval topology of the lattice of functions

Path-connected interval topologies

Embedding finite lattices into the lattice of partitions of a finite set

Implications between different covering properties of spaces

Incomplete lattice homomorphisms between complete lattices (2)

Hausdorff spaces with lattice isomorphism between the topologies [closed]

Density of set of unique sums

Topology with no direct lower neighbor

Does the collection of coverings on a set $X$ form a lattice when ordered by refinement?

Discrepancy of elements in minimal members of a union-closed set

Minimal number of vertices in a graph with special Hadwiger partitions

"Universal maps" as a universal property

Topological retraction vs categorical retraction

Minor ordering for finite graphs