Possibly uncountable subset of the power set of the naturals
73350
Geometric solution to find a Set of totally ordered Subsets of $ \mathbb{N} $ is uncountable
14972
Cardinality of Vitali sets: countably or uncountably infinite?
99064
Uncountable set with exactly one limit point
91485
Finding an uncountable chain of subsets the integers
81509
The cardinality of a countable union of countable sets, without the axiom of choice
156335
Proving Power Set of $\mathbb N$ is Uncountable
1318
What is wrong with this proof that the power set of the natural numbers is countable?
79974
The cardinality of Lebesgue sets
140799
Prove that there exist uncountable family of subsets of $\mathbb{N}$ which is linearly (totally) ordered by relation of inclusion.
29755
Power set equivalency of Axiom of Choice
19924
Uncountable ordinals without power set axiom
70143
Mutually exclusive countable subsets of a countable set
76597
Examples of provably${}^n$ unprovable statements
89749
Example of a not recursively enumerable set $A \subseteq \mathbb{N}$
114770
Proof that a perfect set is uncountable
13779
Canonical copies of sets
3465
Equivalence relations and power sets.