List questions from cardinals

Published on 26 Jul 2019 - 17:53

153

Views

A question about the cardinality of $\theta$-closed hull of a set

Published on 25 Mar 2026 - 4:41

446

Views

On Ways to Show that the Cardinalities of $(0,1)$ and $\mathbb{R}$ are the Same?

Published on 27 Jul 2019 - 3:18

51

Views

Under which conditions does the non-computable infinite sequences have a computable subsequences?

Published on 26 Mar 2026 - 17:51

171

Views

Proof checking about cardinality of all Real numbers

Published on 27 Jul 2019 - 6:18

58

Views

It is true that the criterio of comparation of sets is equivalent to Axiom choice?

Published on 26 Mar 2026 - 23:10

114

Views

Do I understand the continuum hypothesis correctly?

Published on 27 Jul 2019 - 20:36

100

Views

Given a set $X$ and a cardinal $\kappa$ such that $\kappa<|X|$, can I always find a subset of $X$ which has cardinality $\kappa$?

Published on 28 Jul 2019 - 4:17

320

Views

Is cardinality continuous?

Published on 28 Jul 2019 - 20:55

150

Views

Ordinal and cardinal arithmetic

Published on 26 Mar 2026 - 19:35

104

Views

True cofinality tcf

Published on 30 Jul 2019 - 12:43

132

Views

Prove that set is stationary.

Published on 30 Jul 2019 - 17:56

42

Views

ideal $\check I(\lambda)$: the definition is missing

Published on 31 Jul 2019 - 13:16

67

Views

Prove $\mid\mathbb{N}\mid \leq \, \mid \mathbb{N}^{\mathbb{N}} \mid$

Published on 01 Aug 2019 - 21:25

95

Views

filter notation

Published on 02 Aug 2019 - 12:56

List Question

A question about $2^{\aleph_0}$

A question about the cardinality of $\theta$-closed hull of a set

On Ways to Show that the Cardinalities of $(0,1)$ and $\mathbb{R}$ are the Same?

Under which conditions does the non-computable infinite sequences have a computable subsequences?

Proof checking about cardinality of all Real numbers

It is true that the criterio of comparation of sets is equivalent to Axiom choice?

Do I understand the continuum hypothesis correctly?

Given a set $X$ and a cardinal $\kappa$ such that $\kappa<|X|$, can I always find a subset of $X$ which has cardinality $\kappa$?

Is cardinality continuous?

Ordinal and cardinal arithmetic

True cofinality tcf

Prove that set is stationary.

ideal $\check I(\lambda)$: the definition is missing

Prove $\mid\mathbb{N}\mid \leq \, \mid \mathbb{N}^{\mathbb{N}} \mid$

filter notation

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