Collection of sets with a given cardinality $\kappa$ is not set
132537
Class of sets of a given infinite cardinality
65768
What is the cardinality of the set of the empty set?
109054
Given an infinite set of cardinality $X$, is there a chain in $\mathcal P(X)$ of the same cardinalty of $\mathcal P(X)$?
153305
Adding subsets of regular cardinals (Jech p. 226)
79778
$\kappa\cdot\kappa= \kappa,$ for infinite cardinals
5840
divides, not divides and cardinalities
132025
Is there an alternative to Cantor's cardinalities that makes proper subsets smaller than their sets?
12436
The cardinality of the set of all finite subsets of an infinite set
89712
For every set $A$, the empty set is a subset of $A$. The empty set is a set. Therefore, the empty set has a cardinality $\geq 1\ldots$
89167
Cardinality of equivalence relations in $\mathbb{N}$
88099
Not $\sigma$-compact set without axiom of choice
146098
Number of nonempty subsets of a set with $n$ elements
106414
Classifying whether a collection of objects is a set
154474
Image of countable and uncountable sets
62687
Proving Cardinality of Cosets in Abstract Algebra
81509
The cardinality of a countable union of countable sets, without the axiom of choice
139826
arbitrary large finite sums of an uncountable set.