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Boaz Tsaban's user avatar
Boaz Tsaban's user avatar
Boaz Tsaban's user avatar
Boaz Tsaban
  • Member for 14 years, 7 months
  • Last seen more than a week ago
32 votes
1 answer
2k views

Bidi: A new cardinal characteristic of the continuum?

18 votes
0 answers
698 views

The cofinality of $(\mathbb{N}^\kappa,\le)$ for uncountable $\kappa$?

15 votes
2 answers
951 views

$\mathfrak{ufo}$: An unidentified combinatorial cardinal characteristic of the continuum?

15 votes
2 answers
3k views

Covering the space by disjoint unit circles

14 votes
2 answers
1k views

The Simultaneous Conjugacy Problem in the symmetric group $S_N$

13 votes
1 answer
660 views

Avoiding countable subgroups of a group homeomorphic to the Cantor space

11 votes
1 answer
423 views

A classic cardinal characteristic of the continuum in disguise?

9 votes
1 answer
600 views

How many closed measure zero sets are needed to cover the real line?

8 votes
2 answers
748 views

Avoiding countable subgroups of general uncountable groups

8 votes
1 answer
421 views

The cardinality of projections of subsets of the Hilbert cube by inner products

7 votes
1 answer
382 views

References for higher descriptive set theory surveys

7 votes
1 answer
427 views

How many closed measure zero sets are needed to cover the real line, really?

6 votes
1 answer
293 views

What is the height (or depth) of $[\mathbb{N}]^\infty$?

6 votes
1 answer
955 views

A property of the Frechet filter and every ultrafilter

6 votes
1 answer
761 views

A ridiculous combinatorial cardinal characteristic of the continuum?

6 votes
3 answers
647 views

When does the generalized Cantor space embed in a $\kappa$-compact space

6 votes
4 answers
2k views

A simpler proof that compact sets have cardinality continuum?

5 votes
0 answers
114 views

Computing centralizers of finite sets in right angled Artin groups (RAAGs) / partially commutative groups / graph groups

5 votes
1 answer
131 views

Is it consistent that the additivity of Lebesgue null sets is greater than $\frak h$?

5 votes
2 answers
2k views

A number theoretic conjecture by Chat GPT [closed]

5 votes
1 answer
483 views

Are semigroups with finite-to-one right multiplication "moving"?

5 votes
1 answer
885 views

Finding a basis for the (linear combinations) span of a matrix group, efficiently?

5 votes
1 answer
512 views

How many random matrices does it take to generate a matrix algebra?

5 votes
1 answer
416 views

When is there an unbounded tower in $[\mathbb{N}]^\infty$?

5 votes
0 answers
317 views

Unbounded towers and combinatorial cardinal characteristics of the continuum

5 votes
1 answer
579 views

When is the generalized Cantor space $\kappa$-compact?

4 votes
0 answers
192 views

What is the complexity of intersecting two matrix algebras over a finite field?

4 votes
1 answer
324 views

Almost compact sets

2 votes
1 answer
261 views

What is the cofinality of the positive measure sets of reals?

2 votes
1 answer
208 views

Reference request: The consistency of a tall tower in $\mathbb{N}^\mathbb{N}$