Are there cardinalities beyond Aleph 2?
37991
How many different sizes of infinity are there?
82947
Undecidable cardinality
150605
Existence of a regular uncountable $\aleph_{\alpha}$ without $\mathsf{AC}$
6427
how many infinite cardinals are smaller than $\aleph$?
79568
Cardinality of the set $D$
59459
Binary sequences and ${2}^{\mathbb{N}}$ have the same cardinality
58636
Do the real numbers and the complex numbers have the same cardinality?
132537
Class of sets of a given infinite cardinality
79349
The Aleph numbers and infinity in calculus.
9651
Cardinality of cartesian product of an infinite set with N
73850
Cardinality of set of functions
146436
Cardinality of the set of bijective functions on $\mathbb{N}$?
81509
The cardinality of a countable union of countable sets, without the axiom of choice
43598
Do $\omega^\omega=2^{\aleph_0}=\aleph_1$?
104744
Can sets of cardinality $\aleph_1$ have nonzero measure?
146432
If $2^{\aleph_0}=\aleph_2$, what is known about $2^{\aleph_1}$?
79974
The cardinality of Lebesgue sets