Uncountable choice set
70409
Rational Equivalence Relation and Measure
3217
Construction of uncountably many non-isomorphic linear (total) orderings of natural numbers
81509
The cardinality of a countable union of countable sets, without the axiom of choice
57644
Lower bounds for ${{2n} \choose {n}}$
132537
Class of sets of a given infinite cardinality
131592
Finite choice without AC
111954
Computing the cardinality of a combinatorial set
146055
Proving a set of functions is uncountable
2935
Completness and Set of Result of One Set ?!?
20252
The Axiom of Choice and the Cartesian Product.
75019
Infinite Cartesian product of countable sets is uncountable
19414
Uncountable subset with uncountable complement, without the Axiom of Choice
136106
Is every open subset of $ \mathbb{R} $ uncountable?
70143
Mutually exclusive countable subsets of a countable set
127778
Unboundedness in linear programming
97111
Weighted choice short and simple
98355
Is the set of all possible binary strings countable?