List questions from cardinals

Published on 24 Feb 2016 - 14:38

1.7k

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A Successor Cardinal is Regular

Published on 25 Feb 2016 - 1:23

136

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Does $|X|<|Y|$ imply $\mathcal{P}(X)<\mathcal{P}(Y)?$

Published on 27 Feb 2016 - 4:03

368

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Cardinal of a set of numbers: naturals, integers, rationals and irrationals

Published on 28 Feb 2016 - 0:02

733

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Cardinality: Set of all binary sequence equal c

Published on 02 Apr 2026 - 21:37

37

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Large ordered family of set inclusions complete?

Published on 30 Mar 2026 - 22:01

882

Views

Cardinality of a group of permutation

Published on 02 Mar 2016 - 8:55

566

Views

weight of a topological space

Published on 02 Mar 2016 - 9:07

64

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How to measure difference in size of infinite objects?

Published on 02 Mar 2016 - 11:32

100

Views

What is the cardinality of the following set

Published on 03 Mar 2016 - 23:30

58

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Are the numbers $\beth_n$ for $n > 0$ signed or unsigned?

Published on 05 Mar 2016 - 2:13

768

Views

Set Theory: Tree Property

Published on 26 Mar 2026 - 12:09

41

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The weight of $X$ is $\aleph_0$ iff $X$ is second countable

Published on 08 Mar 2016 - 10:10

126

Views

Is noetherianity really about cardinals or ordinals?

Published on 30 Mar 2026 - 22:03

256

Views

$\infty$ and $-\infty$ are to $\aleph_0$ / $\beth_0$ as "what" is to $\beth_1$?

Published on 04 Apr 2026 - 8:36

List Question

Problem on infinite cardinal number

A Successor Cardinal is Regular

Does $|X|<|Y|$ imply $\mathcal{P}(X)<\mathcal{P}(Y)?$

Cardinal of a set of numbers: naturals, integers, rationals and irrationals

Cardinality: Set of all binary sequence equal c

Large ordered family of set inclusions complete?

Cardinality of a group of permutation

weight of a topological space

How to measure difference in size of infinite objects?

What is the cardinality of the following set

Are the numbers $\beth_n$ for $n > 0$ signed or unsigned?

Set Theory: Tree Property

The weight of $X$ is $\aleph_0$ iff $X$ is second countable

Is noetherianity really about cardinals or ordinals?

$\infty$ and $-\infty$ are to $\aleph_0$ / $\beth_0$ as "what" is to $\beth_1$?

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