List questions from cardinals

Published on 08 Apr 2026 - 4:30

394

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Cofinality of infinite cardinals

Published on 01 Jun 2012 - 11:23

1.1k

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Can we distinguish $\aleph_0$ from $\aleph_1$ in Nature?

Published on 05 Jun 2012 - 13:06

232

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Summation of cardinals is smaller than product of cardinals

Published on 06 Jun 2012 - 12:42

4.4k

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Do $\omega^\omega=2^{\aleph_0}=\aleph_1$?

Published on 04 Apr 2026 - 17:30

227

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problem of a cardinality of a union

Published on 07 Jun 2012 - 15:57

254

Views

Effective cardinality

Published on 09 Apr 2026 - 7:56

190

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Cardinality, $|x|=|y|$ implies $|A^x|=|A^y|$

Published on 13 Jun 2012 - 4:58

3.6k

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Number of elements vs cardinality vs size

Published on 15 Jun 2012 - 10:46

1.7k

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cardinality of the set of countable partitions of $\mathbb{R}$

Published on 24 Jun 2012 - 16:00

179

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cardinality of possible prime decompositions, countably infinite bijection

Published on 27 Jun 2012 - 21:04

1.7k

Views

Proving that there are infinite cardinal numbers >$\mathfrak{c}$

Published on 28 Jun 2012 - 13:25

2.4k

Views

cardinality: The cardinality of the set of all relations over the natural numbers.

Published on 30 Jun 2012 - 12:41

1.3k

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Number of well-ordering relations on a well-orderable infinite set $A$?

Published on 06 Apr 2026 - 18:18

171

Views

Question about cardinals without GCH

Published on 01 Jul 2012 - 20:24

List Question

What do the cosets of $\mathbb{R} / \mathbb{Q}$ look like?

Cofinality of infinite cardinals

Can we distinguish $\aleph_0$ from $\aleph_1$ in Nature?

Summation of cardinals is smaller than product of cardinals

Do $\omega^\omega=2^{\aleph_0}=\aleph_1$?

problem of a cardinality of a union

Effective cardinality

Cardinality, $|x|=|y|$ implies $|A^x|=|A^y|$

Number of elements vs cardinality vs size

cardinality of the set of countable partitions of $\mathbb{R}$

cardinality of possible prime decompositions, countably infinite bijection

Proving that there are infinite cardinal numbers >$\mathfrak{c}$

cardinality: The cardinality of the set of all relations over the natural numbers.

Number of well-ordering relations on a well-orderable infinite set $A$?

Question about cardinals without GCH

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