subset
set whose elements are all contained in another set
basis
subset of a vector space that allows defining coordinates
complement
unary operation on sets: the set of non-elements of the argument set
attractor
set of numerical values toward which a system tends to evolve, for a wide variety of starting conditions of the system
kernel
algebraic concept
basis
basis of a module in algebra
edge cover
a set of edges that touches every vertex of a graph
stationary set
in set theory, a subset of a cardinal that intersects every club set
hyperbolic triangle
triangle in the hyperbolic plane, possibly having ideal vertices
arc
closed segment of a differentiable curve
intersection
concept in set theory (for the term in geometry, see Q1364910)
hyperplane
geometric object
sample
set of data collected and/or selected from a statistical population by a defined procedure
region of interest
samples within a data set identified for a particular purpose
irreducible component
concept, used to make formal the idea that a set such as defined by the equation XY=0 is the union of the two lines X=0 and Y=0
polar set
set at which a nonconstant superharmonic function diverges
bounded set
set in a topological vector space is called bounded or von Neumann bounded, if every neighborhood of the zero vector can be inflated to include the set
sublanguage
subset of a language, e.g human language or programming language
generating set of a module
concept in mathematics
non-measurable set
set which cannot be assigned a meaningful "size"
Gaussian prime
prime elements of the ring of Gaussian integers
negligible set
Subset of a null set
homogeneous subset
with respect to a function, a subset of the domain, within whose finite subsets the function is constant
event
in statistics and probability theory, set of outcomes to which a probability is assigned
chain
totally ordered subset of some partially ordered set
availability zone
set of facilities that share no single point of failure with any other availability zone
projective set
in descriptive set theory, a subset of a Polish space constructible by taking complements and projections of an analytic set
generating set of a group
subset of a group such that all group elements can be expressed by finitely many group operations on its elements
coset
the set arising from multiplying every element in a subgroup by an element in the ambient group
neighborhood
set in a topological space that contains an open superset of a given point or subset
upper set
subset of a preordered set that includes all successors of its elements
projective frame
in an 𝑛-dimensional projective space, an (𝑛+2)-tuple of points such that no hyperplane contains 𝑛+1 of them
region
construct in mathematical analysis
system of parameters
in an n-dimensional Noetherian local ring R, a set of elements r₁,r₂, …, rₙ, such that the radical of the ideal generated by them equals the maximal ideal
circle of a sphere
mathematical expression of circle like slices of sphere
separated sets
type of relation for subsets of a topological space
cone
in linear algebra
recursive set
Set where an algorithm can take a number as an input and can decide whether the number belongs to the set
configuration space
in classical mechanics, configuration of a system consisting of the set of positions taken by all components subject to kinematical constraints
null set
subset of a measure space that is contained in a measurable set of measure zero
reduced residue system
set of φ(n) integers such that each integer is relatively prime to n and no two are congruent modulo n
unit disk
set of points at distance less than one from a given point
constructible set
in a topological space, a subset expressible as a finite union of locally closed subsets
sigma-algebra
algebraic structure closed under numerable union, intersection, and complement.
derived set
set of all limit points of a set
subsequence
binary relation between sequences (strings)