Infinite Collection of Sets with These Properties
107614
Partitioning an infinite set
47697
Russell's paradox: a set cannot contain its own powerset
66398
Union of a finite set and a countably infinite set is countably infinite
156006
Cardinality of set containing all infinite subsets of $\mathbb{Q}$
139078
Infinite partition of $\mathbb N$ by infinite subsets
94825
Open set as a finite union of closed sets
70940
Homework - set theory infinite union
99478
countably infinite union of countably infinite sets is countable
14972
Cardinality of Vitali sets: countably or uncountably infinite?
58471
Accumulation points of uncountable sets
48797
Proving Two Sets are Equal - Infinite Sets - Example
4213
The set that only contains itself
154474
Image of countable and uncountable sets
81509
The cardinality of a countable union of countable sets, without the axiom of choice
132868
Bijection between an infinite set and its union of a countably infinite set
30968
Is it possible that every set can be specified?
24372
Infinite Set is Disjoint Union of Two Infinite Sets