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Set theory

Aleph number
Infinite cardinal number
Binary relation
Relationship between two sets, defined by a set of ordered pairs
Cantor's diagonal argument
Proof in set theory
Cantor's theorem
Theorem in set theory
Cardinality
Size of a set in mathematics
Cardinality of the continuum
Cardinality of the set of real numbers
Cartesian product
Mathematical set formed from two given sets
Class (set theory)
Collection of sets in mathematics that can be defined based on a property of its members
Complement (set theory)
Set theory concept
Continuum hypothesis
Proposition in mathematical logic
Element (mathematics)
Any one of the distinct objects that make up a set in set theory
Empty set
Mathematical set containing no elements
Equivalence relation
Mathematical concept for comparing objects
Forcing (mathematics)
Technique invented by Paul Cohen for proving consistency and independence results
Indexed family
Collection of objects, each associated with an element from some index set
Intersection (set theory)
Concept in mathematics specific to the field of set theory
Multiset
Mathematical set with repetitions allowed
Naive set theory
Informal set theories
Ordered pair
Pair of mathematical objects
Ordinal number
Order type of a well-ordered set
Partition of a set
Mathematical ways to group elements of a set
Pointed set
A set equipped with a choice of a specific element
Power set
Mathematical set containing all subsets of a given set
Reflexive relation
A binary relation over a set in which every element is related to itself
Russell's paradox
Paradox in the foundations of mathematics
Set (mathematics)
Collection of mathematical objects
Set theory
Branch of mathematics that studies sets
Subset
Mathematical set contained in another set
Symmetric relation
Type of binary relation
Transfinite induction
Mathematical concept
Transitive relation
Type of binary relation
Tuple
Finite ordered list of elements
Union (set theory)
Mathematical operation where sets combine or relate
Universe (mathematics)
Collection that contains all the entities one wishes to consider in a given situation in mathematics
Venn diagram
Diagram that shows all possible logical relations between a collection of sets
Von Neumann universe
Set theory concept