Question

Outline of Generic Separable Banach Spaces don't have a Schauder Basis

score 145 · Answer 1 · 2015-10-12 22:50:07

145

Views

Outline of Generic Separable Banach Spaces don't have a Schauder Basis

Published on 12 Oct 2015 - 22:50

score 403 · Answer 2 · 2015-10-13 14:36:27

403

Views

Vanishing Cantor-Bendixson derivative if and only if scattered

Published on 13 Oct 2015 - 14:36

score 989 · Answer 3 · 2026-03-14 13:38:51

989

Views

Is a bijective projection function measure preserving?

Published on 14 Mar 2026 - 13:38

score 735 · Answer 4 · 2015-10-15 19:57:35

735

Views

Why is the Dynkin system generated by open intervals in $\mathbb{R}$ the Borel $\sigma$-algebra?

Published on 15 Oct 2015 - 19:57

score 192 · Answer 5 · 2026-03-19 00:46:22

192

Views

Do (the restrictions of) continuous maps (to the rationals) form a Borel set?

Published on 19 Mar 2026 - 0:46

score 377 · Answer 6 · 2026-03-22 10:19:00

377

Views

$\mathbb{R}^3$ \ $\mathbb{Q}^3$ is union of disjoint lines. The lines are not in an axis diretion.

Published on 22 Mar 2026 - 10:19

score 88 · Answer 7 · 2015-10-21 23:45:58

88

Views

$\mathbb{R}^3$ \ $\mathbb{Q}^3$ is a union of disjoint lines, The lines are not in an axis direction.

Published on 21 Oct 2015 - 23:45

score 215 · Answer 8 · 2026-03-18 23:54:43

215

Views

$\Pi^1_1$ singletons and $\Delta^1_2$ wellorders on $\omega$ in $L$

Published on 18 Mar 2026 - 23:54

score 165 · Answer 9 · 2015-10-26 13:01:42

165

Views

For a Borel action of a locally compact second countable group G on a standard Borel space S, are the orbits always Borel?

Published on 26 Oct 2015 - 13:01

score 388 · Answer 10 · 2015-11-06 15:22:19

388

Views

Classification of Polish topologies on a countably infinite set

Published on 06 Nov 2015 - 15:22

score 878 · Answer 11 · 2015-11-11 13:39:18

878

Views

Existence of a section of non-zero measure

Published on 11 Nov 2015 - 13:39

score 98 · Answer 12 · 2015-11-12 09:41:20

98

Views

Not a small, not a big set

Published on 12 Nov 2015 - 9:41

score 443 · Answer 13 · 2015-11-12 20:54:12

443

Views

Finite union of Polish spaces is not Polish?

Published on 12 Nov 2015 - 20:54

score 148 · Answer 14 · 2015-11-13 08:18:17

148

Views

Measure zero on all Fat Cantor Sets

Published on 13 Nov 2015 - 8:18

score 68 · Answer 15 · 2015-11-15 01:54:27

68

Views

Show that there exist Borel sets $B_n$ such that $B=\bigcup B_n$

Published on 15 Nov 2015 - 1:54

List Question

Outline of Generic Separable Banach Spaces don't have a Schauder Basis

Vanishing Cantor-Bendixson derivative if and only if scattered

Is a bijective projection function measure preserving?

Why is the Dynkin system generated by open intervals in $\mathbb{R}$ the Borel $\sigma$-algebra?

Do (the restrictions of) continuous maps (to the rationals) form a Borel set?

$\mathbb{R}^3$ \ $\mathbb{Q}^3$ is union of disjoint lines. The lines are not in an axis diretion.

$\mathbb{R}^3$ \ $\mathbb{Q}^3$ is a union of disjoint lines, The lines are not in an axis direction.

$\Pi^1_1$ singletons and $\Delta^1_2$ wellorders on $\omega$ in $L$

For a Borel action of a locally compact second countable group G on a standard Borel space S, are the orbits always Borel?

Classification of Polish topologies on a countably infinite set

Existence of a section of non-zero measure

Not a small, not a big set

Finite union of Polish spaces is not Polish?

Measure zero on all Fat Cantor Sets

Show that there exist Borel sets $B_n$ such that $B=\bigcup B_n$

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