User Dominic van der Zypen

8 votes

2 answers

705 views

Induced subgraphs of any given smaller chromatic number

asked Jul 30, 2021 at 8:25

8 votes

3 answers

844 views

Sunflowers in maximal almost disjoint families

asked Jun 7, 2021 at 9:35

8 votes

2 answers

168 views

Neighborhood fingerprint of a graph

asked Mar 22, 2018 at 8:15

8 votes

2 answers

205 views

Spaces without maximal homogeneous subspaces

asked May 3, 2018 at 10:35

8 votes

1 answer

368 views

Model ${\sf ZF}$ that "spreads" members of ${\cal P}(X)$

asked Oct 30, 2017 at 13:43

8 votes

1 answer

609 views

Hausdorff distance and Cauchy sequences

asked Jul 4, 2017 at 6:33

8 votes

1 answer

182 views

Unbeatable clique covers

asked Dec 13, 2016 at 6:57

8 votes

2 answers

415 views

Space $X$ such that $X^\lambda\cong X$ for some $\lambda$

asked Jun 11, 2015 at 6:41

8 votes

3 answers

507 views

Binary relations as the topological closure of the diagonal

asked Sep 2, 2014 at 12:08

8 votes

3 answers

584 views

"All retracts are closed" as separation axiom

asked Dec 18, 2014 at 8:35

8 votes

2 answers

944 views

Co-Hausdorffification

asked Jan 30, 2015 at 8:12

8 votes

1 answer

695 views

Edge chromatic number of hypergraphs

asked Jan 11, 2016 at 16:33

8 votes

2 answers

439 views

Coarsest admissible topology on $\text{Cont}(X,Y)$

asked Jul 6, 2015 at 7:11

7 votes

2 answers

998 views

Upper density of the set of $n$'s such that $p(n)$ is prime, where $p$ is polynomial

asked Jul 14, 2015 at 12:01

7 votes

2 answers

241 views

Critical with respect to chromatic, but not Hadwiger number

asked Oct 13, 2015 at 6:50

7 votes

3 answers

322 views

Numerical and topological density

asked Feb 9, 2016 at 8:08

7 votes

2 answers

320 views

Bounding and dominating numbers ${\frak b}, {\frak d}$ via ultrafilters

asked Feb 12, 2016 at 7:41

7 votes

2 answers

264 views

Reconstructibility of topological spaces

asked Mar 20, 2016 at 9:17

7 votes

1 answer

254 views

Universal graph homomorphisms

asked Dec 11, 2014 at 15:35

7 votes

0 answers

204 views

Is $(\omega+1)^\omega$ with the box topology ultraparacompact?

asked Jan 19, 2015 at 16:36

7 votes

1 answer

924 views

Infinite graphs isomorphic to their line graph

asked Jan 23, 2015 at 7:05

7 votes

1 answer

798 views

Intersection of connected components in $\mathbb{R}^n$

asked May 31, 2015 at 10:00

7 votes

1 answer

323 views

Notions of infinity in $\mathsf{ZF}$ without choice

asked Mar 30, 2015 at 7:02

7 votes

3 answers

528 views

Images of $\{0,1\}^\kappa$

asked Mar 18, 2015 at 11:56

7 votes

1 answer

448 views

Fixed points of cardinal logarithm

asked Mar 13, 2017 at 7:48

7 votes

1 answer

393 views

Sets of sets: near-pencils and projective planes

asked Apr 6, 2017 at 7:00

7 votes

2 answers

355 views

Dense and co-dense subsets in connected $T_2$-spaces

asked Jul 14, 2017 at 13:12

7 votes

0 answers

124 views

Does Rota's basis conjecture over some fixed field imply Rota's basis conjecture?

asked Mar 27, 2017 at 14:12

7 votes

3 answers

492 views

Minimal covering sets in families of sets intersecting in at most $1$ point

asked Aug 3, 2017 at 8:07

7 votes

1 answer

215 views

Are free ultrafilters as posets product-irreducible?

asked Aug 5, 2017 at 14:33

Stack Exchange Network

1,209 Questions

Induced subgraphs of any given smaller chromatic number

Sunflowers in maximal almost disjoint families

Neighborhood fingerprint of a graph

Spaces without maximal homogeneous subspaces

Model ${\sf ZF}$ that "spreads" members of ${\cal P}(X)$

Hausdorff distance and Cauchy sequences

Unbeatable clique covers

Space $X$ such that $X^\lambda\cong X$ for some $\lambda$

Binary relations as the topological closure of the diagonal

"All retracts are closed" as separation axiom

Co-Hausdorffification

Edge chromatic number of hypergraphs

Coarsest admissible topology on $\text{Cont}(X,Y)$

Upper density of the set of $n$'s such that $p(n)$ is prime, where $p$ is polynomial

Critical with respect to chromatic, but not Hadwiger number

Numerical and topological density

Bounding and dominating numbers ${\frak b}, {\frak d}$ via ultrafilters

Reconstructibility of topological spaces

Universal graph homomorphisms

Is $(\omega+1)^\omega$ with the box topology ultraparacompact?

Infinite graphs isomorphic to their line graph

Intersection of connected components in $\mathbb{R}^n$

Notions of infinity in $\mathsf{ZF}$ without choice

Images of $\{0,1\}^\kappa$

Fixed points of cardinal logarithm

Sets of sets: near-pencils and projective planes

Dense and co-dense subsets in connected $T_2$-spaces

Does Rota's basis conjecture over some fixed field imply Rota's basis conjecture?

Minimal covering sets in families of sets intersecting in at most $1$ point

Are free ultrafilters as posets product-irreducible?