Question

Cardinality of the difference of two sets

score 1k · Answer 1 · 2017-11-19 18:28:51

1k

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Cardinality of the difference of two sets

Published on 19 Nov 2017 - 18:28

score 95 · Answer 2 · 2017-11-20 15:15:59

95

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Are the following sets countable or uncountable?

Published on 20 Nov 2017 - 15:15

score 233 · Answer 3 · 2017-11-21 17:23:13

233

Views

If the index set of an infinite class of countable sets is of cardinality m, then is the union of all sets in the class also of cardinality m?

Published on 21 Nov 2017 - 17:23

score 134 · Answer 4 · 2026-04-07 20:21:22

134

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Measure of invertibility of functions

Published on 07 Apr 2026 - 20:21

score 527 · Answer 5 · 2017-11-24 19:00:44

527

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The statement "$\alpha$ is a cardinal" is not absolute

Published on 24 Nov 2017 - 19:00

score 182 · Answer 6 · 2017-11-25 01:37:39

182

Views

What is the cardinal of all discrete probability distributions (discrete and continous)

Published on 25 Nov 2017 - 1:37

score 112 · Answer 7 · 2017-11-25 22:28:48

112

Views

Proof of a countable set

Published on 25 Nov 2017 - 22:28

score 129 · Answer 8 · 2017-11-27 00:36:24

129

Views

Set Theory. Power Set Cardinality

Published on 27 Nov 2017 - 0:36

score 1.7k · Answer 9 · 2026-03-28 08:42:05

1.7k

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Proof that the cardinality of the Cantor Set is c

Published on 28 Mar 2026 - 8:42

score 1.8k · Answer 10 · 2017-11-27 21:45:28

1.8k

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Find an infinite set $S$ and a function $g : S \to S$ that is surjective but not injective.

Published on 27 Nov 2017 - 21:45

score 52 · Answer 11 · 2017-11-27 23:25:59

52

Views

Is $A$ \ $B$ ~ $A$ true?

Published on 27 Nov 2017 - 23:25

score 100 · Answer 12 · 2017-11-28 22:35:31

100

Views

Is there cardinal number $\kappa$, such that $\kappa$ is not inaccessible and $2^{<\kappa}<\kappa^{<\kappa}$?

Published on 28 Nov 2017 - 22:35

score 72 · Answer 13 · 2026-03-27 13:41:05

72

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Is $\infty - \infty$ still indeterminate when the infinities are of different cardinality?

Published on 27 Mar 2026 - 13:41

score 290 · Answer 14 · 2017-11-29 02:19:41

290

Views

Question regarding exponentiation of cardinal numbers

Published on 29 Nov 2017 - 2:19

score 38 · Answer 15 · 2017-11-29 09:40:17

38

Views

How to Find cardinality of $|\{f|f:A \to P(A) \}|$ if $|A|=a$ (A infinite set)

Published on 29 Nov 2017 - 9:40

List Question

Cardinality of the difference of two sets

Are the following sets countable or uncountable?

If the index set of an infinite class of countable sets is of cardinality m, then is the union of all sets in the class also of cardinality m?

Measure of invertibility of functions

The statement "$\alpha$ is a cardinal" is not absolute

What is the cardinal of all discrete probability distributions (discrete and continous)

Proof of a countable set

Set Theory. Power Set Cardinality

Proof that the cardinality of the Cantor Set is c

Find an infinite set $S$ and a function $g : S \to S$ that is surjective but not injective.

Is $A$ \ $B$ ~ $A$ true?

Is there cardinal number $\kappa$, such that $\kappa$ is not inaccessible and $2^{<\kappa}<\kappa^{<\kappa}$?

Is $\infty - \infty$ still indeterminate when the infinities are of different cardinality?

Question regarding exponentiation of cardinal numbers

How to Find cardinality of $|\{f|f:A \to P(A) \}|$ if $|A|=a$ (A infinite set)

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