Is it always possible to compare the cardinality of two sets in ZF
48615
Does the assertion that every two cardinalities are comparable imply the axiom of choice?
122814
Finite Sets, Equal Cardinality, Injective $\iff$ Surjective.
141227
How to show the integers have same cardinality as the natural numbers?
15438
do all uncountable sets have same cardinality as real numbers?
111720
Is "have the same cardinality" a equivalence relation?
85099
How many subsets of $\mathbb{N}$ have the same cardinality as $\mathbb{N}$?
10839
Problem in Cardinality and Order
135760
Can proper classes also have cardinality?
96845
Question: Compare the cardinality between the sets $\Bbb R$ and $\Bbb N^{\Bbb N}$
154230
In $\mathsf{ZF}$, for each set $A$ exists an ordinal $\alpha$ such that no surjection $A\to \alpha$ exists
65768
What is the cardinality of the set of the empty set?
144735
Possible cardinality of power sets
79725
Fields of arbitrary cardinality
101669
Cardinality of the Set of all finite subset of $\mathbb{R}$
82628
Cardinality of a set of closed intervals
121366
Intervals and cardinality
68230
The cardinality of a countable union of sets with less than continuum cardinality