Cardinality of equivalence relations on N
89167
Cardinality of equivalence relations in $\mathbb{N}$
122947
What is the cardinality of the set of infinite cardinalities?
89506
Union of disjoint sets : Equivalence relations
82947
Undecidable cardinality
96845
Question: Compare the cardinality between the sets $\Bbb R$ and $\Bbb N^{\Bbb N}$
156006
Cardinality of set containing all infinite subsets of $\mathbb{Q}$
85852
How many total order relations on a set $A$?
62455
Prove Equivalence Relation in G
1396
cardinality of all real sequences
96025
Showing there is only one isomorphism between well ordered sets using transfinite induction
81509
The cardinality of a countable union of countable sets, without the axiom of choice
93330
Cardinality of all cardinalities
74015
Number of relations that are both symmetric and reflexive
69043
The equivalence relation generated by a relation
3217
Construction of uncountably many non-isomorphic linear (total) orderings of natural numbers
3465
Equivalence relations and power sets.
45216
Cardinality of $[0,1]$