Question

What was the original German word Cantor used for "countable" and/or "uncountable"

score 222 · Answer 1 · 2016-08-26 16:33:29

222

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What was the original German word Cantor used for "countable" and/or "uncountable"

Published on 26 Aug 2016 - 16:33

score 1.4k · Answer 2 · 2016-08-28 18:40:36

1.4k

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cardinality of cartesian product of the infinite set of natural numbers

Published on 28 Aug 2016 - 18:40

score 734 · Answer 3 · 2016-08-30 16:03:53

734

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A bogus proof of countable power set

Published on 30 Aug 2016 - 16:03

score 93 · Answer 4 · 2016-09-02 15:28:39

93

Views

finding an injective function between real numbers to prove equal cardinality

Published on 02 Sep 2016 - 15:28

score 284 · Answer 5 · 2016-09-03 16:25:49

284

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Verify the properties of the power set of a set

Published on 03 Sep 2016 - 16:25

score 49 · Answer 6 · 2016-09-05 10:16:57

49

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Writing "$B$ is the number of elements in set $A$ that are less than $0$" in symbols

Published on 05 Sep 2016 - 10:16

score 380 · Answer 7 · 2016-09-06 14:48:09

380

Views

Cardinality of Lebesgue measurable functions under a.e.-identification

Published on 06 Sep 2016 - 14:48

score 123 · Answer 8 · 2026-03-29 11:05:58

123

Views

Can there be a countable set with no computable counting function?

Published on 29 Mar 2026 - 11:05

score 1k · Answer 9 · 2026-03-25 20:35:37

1k

Views

Convex envelope of norm 0

Published on 25 Mar 2026 - 20:35

score 49 · Answer 10 · 2016-09-11 22:04:36

49

Views

How many distinct matrices are there of a given size, up to row equivalence?

Published on 11 Sep 2016 - 22:04

score 135 · Answer 11 · 2026-03-28 12:14:49

135

Views

If $k$ is not a limit cardinal, then the cardinality of a set $E$ with $\lim\limits_{\alpha\in E}\alpha=k$ is equal to the cardinality of $k.$

Published on 28 Mar 2026 - 12:14

score 99 · Answer 12 · 2016-09-13 03:00:13

$\mathcal P \left({\mathbb{R}}\right)$ has strictly greater cardinality than $\mathcal P \left({\mathbb{N}}\right)$

score 509 · Answer 13 · 2026-03-29 16:20:15

509

Views

What is wrong with this proof that the power set of natural numbers is countable?

Published on 29 Mar 2026 - 16:20

score 55 · Answer 14 · 2016-09-15 00:41:31

55

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How to find the cardinality of $A = \{ (a \rightarrow 2^{\omega}) : a < 2^{\omega} \}$ under CH?

Published on 15 Sep 2016 - 0:41

score 3.9k · Answer 15 · 2016-09-15 21:22:34

3.9k

Views

Cardinality of a set within a set

Published on 15 Sep 2016 - 21:22

List Question

What was the original German word Cantor used for "countable" and/or "uncountable"

cardinality of cartesian product of the infinite set of natural numbers

A bogus proof of countable power set

finding an injective function between real numbers to prove equal cardinality

Verify the properties of the power set of a set

Writing "$B$ is the number of elements in set $A$ that are less than $0$" in symbols

Cardinality of Lebesgue measurable functions under a.e.-identification

Can there be a countable set with no computable counting function?

Convex envelope of norm 0

How many distinct matrices are there of a given size, up to row equivalence?

If $k$ is not a limit cardinal, then the cardinality of a set $E$ with $\lim\limits_{\alpha\in E}\alpha=k$ is equal to the cardinality of $k.$

$\mathcal P \left({\mathbb{R}}\right)$ has strictly greater cardinality than $\mathcal P \left({\mathbb{N}}\right)$

What is wrong with this proof that the power set of natural numbers is countable?

How to find the cardinality of $A = \{ (a \rightarrow 2^{\omega}) : a < 2^{\omega} \}$ under CH?

Cardinality of a set within a set

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