List questions from cardinals

Published on 16 Jun 2016 - 2:58

63

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Determine the cardinality of $\{B\subseteq A \colon \vert B \vert \leq \kappa \}$

Published on 17 Jun 2016 - 19:25

178

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Listing real numbers as countable like listing rational numbers

Published on 18 Jun 2016 - 3:45

1k

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$\aleph_1$ and $\omega_1$, what are they?

Published on 02 Apr 2026 - 15:13

1k

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Finding number of subsets of set S that have r elements in common with set T

Published on 19 Jun 2016 - 11:33

108

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Convergence of real numbers along an ultrafilter

Published on 20 Jun 2016 - 5:26

474

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Properties of the power set of $A$

Published on 20 Jun 2016 - 7:17

233

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Existence of model of ZF in which every uncountable cardinal is the cardinality of some power set?

Published on 04 Apr 2026 - 0:19

58

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Paths in a connected subset of $\mathbb R^n$

Published on 28 Mar 2026 - 1:13

90

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A 'bad' definition for the cardinality of a set

Published on 02 Apr 2026 - 15:13

85

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Proving the Cardinality of a set in R

Published on 21 Jun 2016 - 20:59

44

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Prove equinumerosity between $2^\mathbb{N}$ and R total orderings

Published on 23 Jun 2016 - 13:31

86

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Cardinality of subsets with finite intersections

Published on 23 Jun 2016 - 20:15

145

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The cardinality of all the infinite binary sequences that don't contain 010

Published on 24 Jun 2016 - 14:23

97

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Cantor's diagonal argument: Prove that $|A|<|A^{\Bbb N}|$

Published on 25 Jun 2016 - 16:39

List Question

Good introduction to cardinals?

Determine the cardinality of $\{B\subseteq A \colon \vert B \vert \leq \kappa \}$

Listing real numbers as countable like listing rational numbers

$\aleph_1$ and $\omega_1$, what are they?

Finding number of subsets of set S that have r elements in common with set T

Convergence of real numbers along an ultrafilter

Properties of the power set of $A$

Existence of model of ZF in which every uncountable cardinal is the cardinality of some power set?

Paths in a connected subset of $\mathbb R^n$

A 'bad' definition for the cardinality of a set

Proving the Cardinality of a set in R

Prove equinumerosity between $2^\mathbb{N}$ and R total orderings

Cardinality of subsets with finite intersections

The cardinality of all the infinite binary sequences that don't contain 010

Cantor's diagonal argument: Prove that $|A|<|A^{\Bbb N}|$

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