User Dominic van der Zypen

10 votes

3 answers

250 views

Continuous self-maps on $\mathbb{Q}$

asked Aug 11, 2016 at 6:14

9 votes

3 answers

623 views

Does every homogeneous space allow a group structure?

asked Oct 22, 2014 at 9:48

8 votes

1 answer

1k views

Automorphism group of a topological space

asked Nov 25, 2014 at 7:53

7 votes

1 answer

1k views

Totally disconnected space that is not $T_2$

asked Apr 18, 2015 at 14:23

6 votes

4 answers

632 views

Is $2^{\frak{c}}$ separable?

asked Oct 26, 2016 at 5:02

6 votes

1 answer

368 views

Can every finite group be embedded in $\text{Homeo}(\mathbb{R})$?

asked Sep 19, 2018 at 10:45

6 votes

3 answers

287 views

Totally disconnected topologies on countable set.

asked Nov 28, 2014 at 8:10

5 votes

0 answers

91 views

Connected space such that (almost) no subspace is connected [duplicate]

asked Nov 10, 2014 at 10:01

5 votes

1 answer

170 views

Zero-dimensional but not Hausdorff

asked Apr 21, 2015 at 6:43

5 votes

2 answers

70 views

What does $\text{cl}(\text{im}(e_\mathbb{N}))\subseteq 2^{2^{\mathbb{N}}}$ look like?

asked Oct 26, 2016 at 13:52

5 votes

1 answer

233 views

Surjective measures

asked Apr 19, 2018 at 12:50

5 votes

1 answer

3k views

Commutative rings of characteristic 2

asked Aug 6, 2015 at 13:27

4 votes

3 answers

402 views

Totally separated, but the clopen sets do not form a basis

asked Apr 20, 2015 at 7:10

4 votes

1 answer

185 views

3-set-lemma in (naive) set theory

asked Apr 19, 2020 at 20:27

4 votes

1 answer

95 views

Between metacompactness and infinite Lebesgue covering dimension

asked Apr 21, 2015 at 8:34

4 votes

1 answer

92 views

Does "equalisers always closed" imply $T_2$?

asked Apr 15, 2015 at 7:22

4 votes

1 answer

372 views

Graph with only the identity as endomorphism

asked Nov 25, 2014 at 8:41

4 votes

1 answer

62 views

Universality with respect to quotients

asked Oct 23, 2014 at 7:54

4 votes

1 answer

67 views

Infinite graph $G=(\omega, E)$ with $\delta(G) = \aleph_0$ and no perfect matching

asked Aug 14, 2020 at 7:36

3 votes

0 answers

91 views

Implications of the Principle of continuous induction

asked Dec 18, 2020 at 10:40

3 votes

2 answers

96 views

Minimal $T_0$-topologies

asked Oct 22, 2014 at 10:12

3 votes

0 answers

55 views

Retracts of $\mathbb{Q}$

asked Dec 9, 2014 at 13:46

3 votes

1 answer

67 views

Discrete subspace of $\mathbb{N}^\mathbb{N}$

asked Dec 18, 2014 at 13:44

3 votes

2 answers

2k views

Pushout of a subgroup

asked Apr 16, 2015 at 8:26

3 votes

0 answers

173 views

Infinite connected graph such that every vertex has finite degree

asked Jan 23, 2015 at 12:46

3 votes

2 answers

74 views

Is $\underline{2}^\mathbb{N} \cong \prod_{n\in\mathbb{N}}\underline{n}$?

asked Feb 23, 2015 at 8:16

3 votes

1 answer

487 views

Infinite graph without infinite clique or infinite independent set

asked Mar 2, 2015 at 16:04

3 votes

1 answer

167 views

Embedding $(\mathbb{R},+)$ into $(\text{Sym}(\omega),\circ)$

asked Jun 6, 2018 at 13:20

3 votes

1 answer

1k views

Meets and joins in the lattice of partitions

asked Dec 19, 2016 at 16:25

3 votes

1 answer

409 views

Linear ordering with predecessor and successor

asked Dec 30, 2016 at 14:38

Stack Exchange Network

77 Questions

Continuous self-maps on $\mathbb{Q}$

Does every homogeneous space allow a group structure?

Automorphism group of a topological space

Totally disconnected space that is not $T_2$

Is $2^{\frak{c}}$ separable?

Can every finite group be embedded in $\text{Homeo}(\mathbb{R})$?

Totally disconnected topologies on countable set.

Connected space such that (almost) no subspace is connected [duplicate]

Zero-dimensional but not Hausdorff

What does $\text{cl}(\text{im}(e_\mathbb{N}))\subseteq 2^{2^{\mathbb{N}}}$ look like?

Surjective measures

Commutative rings of characteristic 2

Totally separated, but the clopen sets do not form a basis

3-set-lemma in (naive) set theory

Between metacompactness and infinite Lebesgue covering dimension

Does "equalisers always closed" imply $T_2$?

Graph with only the identity as endomorphism

Universality with respect to quotients

Infinite graph $G=(\omega, E)$ with $\delta(G) = \aleph_0$ and no perfect matching

Implications of the Principle of continuous induction

Minimal $T_0$-topologies

Retracts of $\mathbb{Q}$

Discrete subspace of $\mathbb{N}^\mathbb{N}$

Pushout of a subgroup

Infinite connected graph such that every vertex has finite degree

Is $\underline{2}^\mathbb{N} \cong \prod_{n\in\mathbb{N}}\underline{n}$?

Infinite graph without infinite clique or infinite independent set

Embedding $(\mathbb{R},+)$ into $(\text{Sym}(\omega),\circ)$

Meets and joins in the lattice of partitions

Linear ordering with predecessor and successor