Question

Are those cardinals not weakly inaccessible?

score 351 · Answer 1 · 2017-08-24 20:34:08

351

Views

Are those cardinals not weakly inaccessible?

Published on 24 Aug 2017 - 20:34

score 68 · Answer 2 · 2017-08-25 18:38:14

68

Views

What is $\aleph_1$ in the context of this definition

Published on 25 Aug 2017 - 18:38

score 139 · Answer 3 · 2017-08-26 17:05:20

139

Views

Prove that a set of functions has the same cardinality as $\mathbb{N}$

Published on 26 Aug 2017 - 17:05

score 236 · Answer 4 · 2017-08-26 22:37:59

236

Views

What does $\aleph_{\aleph_{\aleph_0}}$ stand for?

Published on 26 Aug 2017 - 22:37

score 145 · Answer 5 · 2026-04-03 23:17:12

145

Views

Prove that $cf(\alpha)=cf(\beta)$

Published on 03 Apr 2026 - 23:17

score 89 · Answer 6 · 2017-08-30 02:26:34

89

Views

What are "cardinality considerations" an what does it mean to prove something by cardinality considerations?

Published on 30 Aug 2017 - 2:26

score 342 · Answer 7 · 2026-04-03 23:22:25

342

Views

Ordinal addition being closed in infinite initial ordinals

Published on 03 Apr 2026 - 23:22

score 95 · Answer 8 · 2017-09-01 03:43:51

Prove:If $(X,\tau)$ is a separable Hausdorff space ,then there are at most $c$ distinct continuous functions $f:(X,\tau)\to[0,1]$.

score 94 · Answer 9 · 2017-09-01 04:21:50

94

Views

The cardinal of functions space

Published on 01 Sep 2017 - 4:21

score 1.1k · Answer 10 · 2017-09-02 04:45:23

1.1k

Views

Prove that there is no injection from $\Bbb{R}$ to $\Bbb{N}$.

Published on 02 Sep 2017 - 4:45

score 143 · Answer 11 · 2026-04-03 23:18:31

143

Views

What does the notation $(\alpha^{+}\times \alpha^{+})\setminus \{(\alpha,\alpha)\}$ mean

Published on 03 Apr 2026 - 23:18

score 112 · Answer 12 · 2017-09-04 23:24:58

112

Views

Why is $\sum_{i\in \omega} \aleph_{i}\geq \aleph_{\omega}$

Published on 04 Sep 2017 - 23:24

score 331 · Answer 13 · 2026-04-06 15:40:30

331

Views

Dimension of a unit square

Published on 06 Apr 2026 - 15:40

score 1.2k · Answer 14 · 2017-09-06 21:40:19

1.2k

Views

Prove (0,1) is uncountable (any method)

Published on 06 Sep 2017 - 21:40

score 421 · Answer 15 · 2017-09-07 09:11:52

421

Views

What is the cofinality of $\kappa^{<\kappa}$?

Published on 07 Sep 2017 - 9:11

List Question

Are those cardinals not weakly inaccessible?

What is $\aleph_1$ in the context of this definition

Prove that a set of functions has the same cardinality as $\mathbb{N}$

What does $\aleph_{\aleph_{\aleph_0}}$ stand for?

Prove that $cf(\alpha)=cf(\beta)$

What are "cardinality considerations" an what does it mean to prove something by cardinality considerations?

Ordinal addition being closed in infinite initial ordinals

Prove:If $(X,\tau)$ is a separable Hausdorff space ,then there are at most $c$ distinct continuous functions $f:(X,\tau)\to[0,1]$.

The cardinal of functions space

Prove that there is no injection from $\Bbb{R}$ to $\Bbb{N}$.

What does the notation $(\alpha^{+}\times \alpha^{+})\setminus \{(\alpha,\alpha)\}$ mean

Why is $\sum_{i\in \omega} \aleph_{i}\geq \aleph_{\omega}$

Dimension of a unit square

Prove (0,1) is uncountable (any method)

What is the cofinality of $\kappa^{<\kappa}$?

Trending Questions

Popular # Hahtags

Popular Questions