Question

If $\beth_1$ is weakly inaccessible, are any of the cardinal characteristics of continuum provably strictly less than $\beth_1$?

score 134 · Answer 1 · 2014-09-01 14:48:12

134

Views

If $\beth_1$ is weakly inaccessible, are any of the cardinal characteristics of continuum provably strictly less than $\beth_1$?

Published on 01 Sep 2014 - 14:48

score 568 · Answer 2 · 2014-09-02 13:24:55

568

Views

Every analytic subset of $\Bbb{R}$ is the projection of a $G_\delta$ set $G \subset \Bbb{R} \times \Bbb{R}$

Published on 02 Sep 2014 - 13:24

score 335 · Answer 3 · 2014-09-05 02:43:47

335

Views

Lightface Pointclasses

Published on 05 Sep 2014 - 2:43

score 51 · Answer 4 · 2014-09-17 21:15:49

51

Views

Is there a model of set theory in which $2^{2^{\omega_1}}$ is separable?

Published on 17 Sep 2014 - 21:15

score 129 · Answer 5 · 2014-10-21 14:48:26

129

Views

Continuity of a mapping $C\to C^2$, $C$ being the Cantor set

Published on 21 Oct 2014 - 14:48

score 96 · Answer 6 · 2014-10-23 05:29:54

96

Views

Question about topological properties of $\Bbb{C}_p$

Published on 23 Oct 2014 - 5:29

score 460 · Answer 7 · 2014-10-23 11:51:12

460

Views

Is a function with everywhere discontinuities of the second kind always measurable?

Published on 23 Oct 2014 - 11:51

score 224 · Answer 8 · 2014-11-03 14:37:29

224

Views

Space of Borel measurable maps

Published on 03 Nov 2014 - 14:37

score 940 · Answer 9 · 2014-11-11 19:28:22

940

Views

Cardinality of non-Borel sets

Published on 11 Nov 2014 - 19:28

score 1.1k · Answer 10 · 2014-11-15 10:23:25

1.1k

Views

Open set of Polish space is again a Polish space?

Published on 15 Nov 2014 - 10:23

score 531 · Answer 11 · 2014-11-29 06:54:27

531

Views

Continuum Hypothesis for closed sets

Published on 29 Nov 2014 - 6:54

score 1.3k · Answer 12 · 2014-11-29 19:11:42

1.3k

Views

Intuitive way to understand the Smith–Volterra–Cantor set

Published on 29 Nov 2014 - 19:11

score 670 · Answer 13 · 2014-12-02 19:18:23

670

Views

Borel subset in Polish Spaces

Published on 02 Dec 2014 - 19:18

score 192 · Answer 14 · 2014-12-03 00:55:48

192

Views

Countable metric space and space of all rational numbers.

Published on 03 Dec 2014 - 0:55

score 71 · Answer 15 · 2014-12-04 11:36:39

71

Views

No-where dense sets in the reals

Published on 04 Dec 2014 - 11:36

List Question

If $\beth_1$ is weakly inaccessible, are any of the cardinal characteristics of continuum provably strictly less than $\beth_1$?

Every analytic subset of $\Bbb{R}$ is the projection of a $G_\delta$ set $G \subset \Bbb{R} \times \Bbb{R}$

Lightface Pointclasses

Is there a model of set theory in which $2^{2^{\omega_1}}$ is separable?

Continuity of a mapping $C\to C^2$, $C$ being the Cantor set

Question about topological properties of $\Bbb{C}_p$

Is a function with everywhere discontinuities of the second kind always measurable?

Space of Borel measurable maps

Cardinality of non-Borel sets

Open set of Polish space is again a Polish space?

Continuum Hypothesis for closed sets

Intuitive way to understand the Smith–Volterra–Cantor set

Borel subset in Polish Spaces

Countable metric space and space of all rational numbers.

No-where dense sets in the reals

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