Santi Spadaro's user avatar
Santi Spadaro's user avatar
Santi Spadaro's user avatar
Santi Spadaro
  • Member for 13 years, 3 months
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18 votes
1 answer
638 views

A large separable space of countable tightness

17 votes
1 answer
971 views

Does the generalized $\Delta$-system lemma imply some weak version of the GCH?

14 votes
0 answers
541 views

Small cardinals related to topological convergence

12 votes
0 answers
379 views

L-spaces without convergent sequences

10 votes
0 answers
342 views

Cellular-Lindelöf: a common generalization of the Lindelöf property and the CCC

10 votes
1 answer
408 views

A variant of the Moore-Mrowka problem

10 votes
0 answers
235 views

Arhangel'skii's problem revisited

9 votes
2 answers
431 views

Convergence properties in dense subsets of $\omega^*$

9 votes
0 answers
357 views

Well-founded families of sets and topological convergence

9 votes
1 answer
298 views

Strict unfriendly partitions

8 votes
1 answer
584 views

On the cardinality of perfect spaces with the countable chain condition

8 votes
1 answer
179 views

Are all monotonically normal manifolds of dimension at least two metrizable?

7 votes
1 answer
231 views

Sparse cofinal families

7 votes
1 answer
203 views

On the cardinality of ccc spaces with a $G_\delta$-diagonal

7 votes
1 answer
207 views

The square of a ccc topological group

7 votes
1 answer
252 views

What's the minimal weight of a maximal space?

6 votes
0 answers
141 views

Countably compact non-compact perfect spaces

6 votes
4 answers
468 views

Periodic point-free maps and free ultrafilters.

6 votes
0 answers
151 views

Is there a Lindelof $P$-space which is not discretely generated?

6 votes
0 answers
167 views

On the cellularity of the $G_\delta$-topology

6 votes
0 answers
161 views

Free sequences and the cardinality of a topological space

6 votes
1 answer
376 views

Thick Canadian trees

5 votes
0 answers
111 views

Is there a homogeneous compactum where non-empty $G_\delta$s have non-empty interior?

4 votes
0 answers
78 views

Is there an $L$-space whose square is selectively $d$-separable?

4 votes
0 answers
149 views

Two other variants of Arhangel'skii's Problem

3 votes
0 answers
121 views

A space with independent tightness

3 votes
1 answer
298 views

Is there a linearly Lindelof space which is not weakly Lindelof?

3 votes
0 answers
78 views

Is every weakly Lindelof Banach space a $D$-space?

3 votes
0 answers
132 views

Is there a normal space with a $G_\delta$ diagonal which is not submetrizable?

1 vote
0 answers
137 views

A variant of Brocard's Problem