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Function whose values are sets (mathematics)
A set-valued function, also called a correspondence or set-valued relation, is a mathematical function that maps elements from one set, the domain of the
Set-valued_function
Generalized mathematical function
It is a set-valued function with additional properties depending on context; though some authors do not distinguish between set-valued functions and multifunctions
Multivalued_function
Mathematical function that outputs real values
member of its domain. Real-valued functions of a real variable (commonly called real functions) and real-valued functions of several real variables are
Real-valued_function
Function valued in a vector space; typically a real or complex one
A vector-valued function, also referred to as a vector function, is a mathematical function of one or more variables whose range is a set of multidimensional
Vector-valued_function
Association of one output to each input
a function from a set X to a set Y assigns to each element of X exactly one element of Y. The set X is called the domain of the function and the set Y
Function_(mathematics)
Semicontinuity for set-valued functions
of upper and lower semicontinuity of single-valued functions to set-valued functions. A set-valued function that is both upper and lower hemicontinuous
Hemicontinuity
Mathematical method
theorem that guarantees the existence of a single-valued selection function from a given set-valued map. There are various selection theorems, and they
Selection_theorem
Function from sets to numbers
with vector measures, complex measures, and projection-valued measures. The domain of a set function may have any number properties; the commonly encountered
Set_function
Fixed-point theorem for set-valued functions
for all x ∈ S. Then φ has a fixed point. Set-valued function A set-valued function φ from the set X to the set Y is some rule that associates one or more
Kakutani_fixed-point_theorem
Property of functions which is weaker than continuity
semi-continuity) is a property of extended real-valued functions that is weaker than continuity. An extended real-valued function f {\displaystyle f} is upper (respectively
Semi-continuity
of set-valued functions is commonly defined in terms of lower- and upper-hemicontinuity popularized by Berge. In this sense, a set-valued function is
Kuratowski_convergence
Function that outputs either true or false
A Boolean-valued function (sometimes called a predicate or a proposition) is a function of the type f : X → B, where X is an arbitrary set and where B
Boolean-valued_function
Subset of a function's domain on which its value is equal
mathematics, a level set of a real-valued function f of n real variables is a set where the function takes on a given constant value c, that is: L c ( f
Level_set
Property of functions in topology
identified with the set-valued function F : X → 2Y defined by F(x) := { f(x)} for every x ∈ X, where F is called the canonical set-valued function induced by (or
Closed_graph_property
Theorem relating continuity to graphs
Closed graph theorem for set-valued functions—For a Hausdorff compact range space Y {\displaystyle Y} , a set-valued function F : X → 2 Y {\displaystyle
Closed_graph_theorem
Fractal sets in complex dynamics of mathematics
of values with the property that all nearby values behave similarly under repeated iteration of the function, and the Julia set consists of values such
Julia_set
Indicator function of positive numbers
function, or the unit step function, usually denoted by H or θ (but sometimes u, 1 or 𝟙), is a step function named after Oliver Heaviside, the value
Heaviside_step_function
Type of function in mathematics
for single-valued functions consist of arbitrary (connected) open sets. In several complex variables, however, only some connected open sets are domains
Analytic_function
Point where function's value is zero
sometimes called a root) of a real-, complex-, or generally vector-valued function f {\displaystyle f} , is a member x {\displaystyle x} of the domain
Zero_of_a_function
In mathematics, an integer-valued function is a function whose values are integers. In other words, it is a function that assigns an integer to each member
Integer-valued_function
is a set. Set-valued function: whose values are sets. Choice function called also selector or uniformizing function: assigns to each set one of its elements
List_of_types_of_functions
friction force as a function of position and velocity leads to a set-valued function. In differential inclusion, we not only take a set-valued map at the right
Differential_inclusion
Maximized objective function of an optimization problem
utility function. In a problem of optimal control, the value function is defined as the supremum of the objective function taken over the set of admissible
Value_function
Branch of mathematics studying functions of a complex variable
real-valued. In other words, a complex function f : C → C {\displaystyle f:\mathbb {C} \to \mathbb {C} } may be decomposed into two real-valued functions (
Complex_analysis
Mapping function
an additive set function is a function μ \mu mapping sets to numbers, with the property that its value on a union of two disjoint sets equals the sum
Sigma-additive_set_function
Type of mathematical function
mathematics, a constant function is a function whose (output) value is the same for every input value. As a real-valued function of a real-valued argument, a constant
Constant_function
Angle of complex number about real axis
single-valued, typically chosen to be the unique value of the argument that lies within the interval (−π, π]. In this article the multi-valued function will
Argument_(complex_analysis)
Function that is continuous everywhere but differentiable nowhere
mathematics, the Weierstrass function, named after its discoverer, Karl Weierstrass, is an example of a real-valued function that is continuous everywhere
Weierstrass_function
Representation of a mathematical function
This is a subset of three-dimensional space; for a continuous real-valued function of two real variables, its graph forms a surface, which can be visualized
Graph_of_a_function
Sets with no element in common
sets, with some sets repeated. An indexed family of sets ( A i ) i ∈ I , {\displaystyle \left(A_{i}\right)_{i\in I},} is by definition a set-valued function
Disjoint_sets
Type of function in linear algebra
sublinear function (or functional as is more often used in functional analysis), also called a quasi-seminorm, on a vector space is a real-valued function with
Sublinear_function
Real function with secant line between points above the graph itself
mathematics, a real-valued function is called convex if the line segment between any two distinct points on the graph of the function lies above or on the
Convex_function
Mathematical function with convex lower level sets
quasiconvex function is a real-valued function defined on a convex subset of a real vector space, such that for any real number y, the set of points on
Quasiconvex_function
Set-to-real map with diminishing returns
submodular set function (also known as a submodular function) is a set function that, informally, describes the relationship between a set of inputs and
Submodular_set_function
Mathematical function with no sudden changes
a continuous function is a function such that a small variation of the argument induces a small variation of the value of the function. This implies
Continuous_function
Mathematical function
the real functions, which are the real-valued functions of a real variable, that is, the functions of a real variable whose codomain is the set of real
Function_of_a_real_variable
Description of continuous random distribution
probability density function (PDF), density function, or simply density of an absolutely continuous random variable, is a function whose value at any given point
Probability_density_function
Set of the values of a function
the set of all elements of X {\displaystyle X} that map to a member of B . {\displaystyle B.} The image of the function f {\displaystyle f} is the set of
Image_(mathematics)
Fourier transform of the probability density function
In probability theory and statistics, the characteristic function of any real-valued random variable completely defines its probability distribution.
Characteristic function (probability theory)
Characteristic_function_(probability_theory)
On the existence of a continuous selection of a multivalued map from a paracompact space
{\displaystyle F\colon X\to Y} be a lower hemicontinuous set-valued function with nonempty convex closed values. Then there exists a continuous selection f : X
Michael_selection_theorem
Mapping arbitrary data to fixed-size values
A hash function is any function that can be used to map data of arbitrary size to fixed-size values, though there are some hash functions that support
Hash_function
Method of mathematical integration
Lebesgue's theory defines integrals for a class of functions called measurable functions. A real-valued function f on E is measurable if the pre-image of every
Lebesgue_integral
Function returning one of only two values
In mathematics, a Boolean function is a function whose arguments and result assume values from a two-element set (usually {true, false}, {0,1} or {−1,1})
Boolean_function
theory that gives a sufficient condition for a set-valued function to have a measurable selection function. It is named after the Polish mathematicians
Kuratowski and Ryll-Nardzewski measurable selection theorem
Kuratowski_and_Ryll-Nardzewski_measurable_selection_theorem
System including an indeterminate value
A three-valued logic (also trinary logic, trivalent, ternary, or trilean, sometimes abbreviated 3VL) is any of several many-valued logic systems in which
Three-valued_logic
of the function applied to each of the sets separately. This definition is analogous to the notion of superadditivity for real-valued functions. It is
Superadditive_set_function
Complex-differentiable (mathematical) function
In mathematics, a holomorphic function is a complex-valued function of one or more complex variables that is complex differentiable in a neighbourhood
Holomorphic_function
Mathematical function whose set of values is bounded
mathematics, a function f {\displaystyle f} defined on some set X {\displaystyle X} with real or complex values is called bounded if the set of its values (its
Bounded_function
domains for functions is that a nondeterministic function may be described as a deterministic set-valued function, where the set contains all values the nondeterministic
Power_domains
Mathematical function with multiple real-number arguments
complex-valued functions may be easily reduced to the study of the real-valued functions, by considering the real and imaginary parts of the complex function;
Function of several real variables
Function_of_several_real_variables
Set of all things that may be the input of a mathematical function
In mathematics, the domain of a function is the set of inputs accepted by the function. It is sometimes denoted by dom ( f ) {\displaystyle \operatorname
Domain_of_a_function
Functional analysis theorem
integral of a set-valued function (or correspondence) via Debreu's integral. This has applications, for example, in the theory of random compact sets. Minimal
Rådström's_embedding_theorem
Operation on mathematical functions
relations are true of composition of functions, such as associativity. Composition of functions on a finite set: If f = {(1, 1), (2, 3), (3, 1), (4, 2)}
Function_composition
Theorem in mathematics
doesn't hold. The theorem is false if a differentiable function is complex-valued instead of real-valued. For example, if f ( x ) = e x i {\displaystyle f(x)=e^{xi}}
Mean_value_theorem
Largest and smallest value taken by a function at a given point
real-valued function f defined on a domain X has a global (or absolute) maximum point at x∗, if f(x∗) ≥ f(x) for all x in X. Similarly, the function has
Maximum_and_minimum
Mathematical concept
example, consider the real-valued function of a real variable given by f(x) = 5x − 7. One can think of f as the function which multiplies its input by
Inverse_function
Number with a real and an imaginary part
numbers are often used to compute certain real-valued improper integrals, by means of complex-valued functions. Several methods exist to do this; see methods
Complex_number
Study of mathematical algorithms for optimization problems
extreme value theorem of Karl Weierstrass states that a continuous real-valued function on a compact set attains its maximum and minimum value. More generally
Mathematical_optimization
Kind of mathematical function
sets) is a common choice. Some authors define measurable functions as exclusively real-valued ones with respect to the Borel algebra. If the values of
Measurable_function
Ratio of polynomial functions
polynomial functions of x {\displaystyle x} and Q {\displaystyle Q} is not the zero function. The domain of f {\displaystyle f} is the set of all values of x
Rational_function
Mathematical function characterizing set membership
In mathematics, an indicator function or a characteristic function of a subset of a set is a function that maps elements of the subset to one, and all
Indicator_function
Differentiable function whose derivative is not Riemann integrable
In mathematics, Volterra's function, named for Vito Volterra, is a real-valued function V defined on the real line R with the following curious combination
Volterra's_function
Distance from a point to the boundary of a set
the signed distance function or signed distance field (SDF) is the orthogonal distance of a given point x to the boundary of a set Ω in a metric space
Signed_distance_function
About mathematical functions
invention of set theory by Georg Cantor, eventually led to the much more general modern concept of a function as a single-valued mapping from one set to another
History of the function concept
History_of_the_function_concept
Sets whose elements have degrees of membership
function valued in the real unit interval [0, 1]. Fuzzy sets generalize classical sets, since the indicator functions (aka characteristic functions)
Fuzzy_set
Whose values lie in an infinite-dimensional vector space
any set instead of the set of real numbers. Most theorems on integration and differentiation of scalar functions can be generalized to vector-valued functions
Infinite-dimensional vector function
Infinite-dimensional_vector_function
Distance from zero to a number
general notion of a distance function as follows: A real valued function d on a set X × X is called a metric (or a distance function) on X, if it satisfies
Absolute_value
Inputs for which a function's value is non-zero
In mathematics, the support of a real-valued function f {\displaystyle f} is the subset of the function's domain consisting of those elements that are
Support_(mathematics)
Strong form of uniform continuity
real-valued functions of several real variables, this holds if and only if the absolute value of the slopes of all secant lines are bounded by K. The set of
Lipschitz_continuity
the sum of values of the function on each of the sets. This is thematically related to the subadditivity property of real-valued functions. Let Ω {\displaystyle
Subadditive_set_function
Element mapped to itself by a mathematical function
itself by the function. Any set of fixed points of a transformation is also an invariant set. Formally, c is a fixed point of a function f if c belongs
Fixed_point_(mathematics)
All derivatives have the intermediate value property
theorem states that the derivative of any real-valued function of a real variable has the intermediate value property, that is, that the image of an interval
Darboux's_theorem_(analysis)
Mathematical relation consisting of a multi-variable function equal to zero
f(x) involving the multi-valued implicit function f. Not every equation R(x, y) = 0 implies a graph of a single-valued function, the circle equation being
Implicit_function
Variable representing a random phenomenon
be defined for real-valued functions of random variables (or complex-valued, etc.). If the random variable is itself real-valued, then moments of the
Random_variable
Order-preserving mathematical function
In mathematics, a monotonic function (or monotone function) is a function between ordered sets that preserves or reverses the given order. This concept
Monotonic_function
Generalization of derivatives to real-valued functions
convex functions, often in connection to convex optimization. Let f : I → R {\displaystyle f:I\to \mathbb {R} } be a real-valued convex function defined
Subderivative
Method for estimating new data within known data points
of that function for an intermediate value of the independent variable. A closely related problem is the approximation of a complicated function by a simple
Interpolation
Geometric representation of the complex numbers
is multi-valued, because the complex exponential function is periodic, with period 2πi. Thus, if θ is one value of arg(z), the other values are given
Complex_plane
Mathematical function that can be computed by a program
is computable if there is an algorithm that computes the value of the function for every value of its argument. Because of the lack of a precise definition
Computable_function
Function used in signal processing
statistics, a window function (also known as an apodization function or tapering function) is a mathematical function that is zero-valued outside of some chosen
Window_function
Functions in mathematics
the theory of stochastic processes, a harmonic function is a twice continuously differentiable function f : U → R {\displaystyle f:U\to \mathbb {R} }
Harmonic_function
Programming language feature
of available functions, dependent on the context. When the programmer starts with an argument, the set of potentially applicable functions is greatly narrowed
Uniform_function_call_syntax
Continuous function on an interval takes on every value between its values at the ends
{\displaystyle 1} to 2 {\displaystyle 2} . Over the interval, the set of function values has no gap, and the graph can be drawn without lifting a pencil
Intermediate_value_theorem
Set of functions used to represent the electronic wave function
computational chemistry, a basis set is a set of functions (called basis functions) that is used to represent the electronic wave function in the Hartree–Fock method
Basis_set_(chemistry)
Concept in economics and decision theory
but generally related. Consider a set of alternatives among which a person has a preference ordering. A utility function represents that ordering if it is
Utility
Branch of mathematics
continuous real-valued functions on intervals have the intermediate value property, and continuous real-valued functions on compact sets attain maximum
Mathematical_analysis
Function that attains finitely many values
analysis, a simple function is a real (or complex)-valued function over a subset of the real line, similar to a step function. Simple functions are sufficiently
Simple_function
Mathematical relation assigning a probability event to a cost
decision theory, a loss function or cost function (sometimes also called an error function) is a function that maps an event or values of one or more variables
Loss_function
Process of finding the optimal set of variables for a machine learning algorithm
training set or evaluation on a hold-out validation set. Since the parameter space of a machine learner may include real-valued or unbounded value spaces
Hyperparameter_optimization
Function that preserves distinctness
In mathematics, an injective function (also known as injection, or one-to-one function) is a function f that maps distinct elements of its domain to distinct
Injective_function
Measure used in functional analysis
analysis, a projection-valued measure, or spectral measure, is a function defined on certain subsets of a fixed set and whose values are self-adjoint projections
Projection-valued_measure
Topics referred to by the same term
correspondence, a more general term than bijection Set-valued function, for a correspondence as a function representing a set. Correspondence (algebraic geometry),
Correspondence
Point of interest for complex multi-valued functions
point of a multivalued function is a point such that if the function is n {\displaystyle n} -valued (has n {\displaystyle n} values) at that point, all of
Branch_point
Mathematical function for the probability a given outcome occurs in an experiment
variable is a function that assigns a value to each outcome of a probabilistic experiment; it induces a probability distribution on the set of values it can
Probability_distribution
Probability that random variable X is less than or equal to x
cumulative distribution function (CDF) of a real-valued random variable X {\displaystyle X} , or just distribution function of X {\displaystyle X} ,
Cumulative distribution function
Cumulative_distribution_function
Mathematical set containing no elements
the empty set or void set is the unique set having no elements; its size or cardinality (count of elements in a set) is zero. Some axiomatic set theories
Empty_set
Mathematical transform that expresses a function of time as a function of frequency
complex valued function of frequency. The term Fourier transform refers to both the mathematical operation and to this complex-valued function. When a
Fourier_transform
Solution concept of a non-cooperative game
profile in the set of all mixed strategies and u i {\displaystyle u_{i}} is the payoff function for player i. Define a set-valued function r : Σ → 2 Σ {\displaystyle
Nash_equilibrium
Mathematical set of all subsets of a set
indicator function or a characteristic function of a subset A of a set S with the cardinality |S| = n is a function from S to the two-element set {0, 1}
Power_set
Propositional calculus in which there are more than two truth values
Many-valued logic (also multi- or multiple-valued logic) is a propositional calculus in which there are more than two truth values. Traditionally, in
Many-valued_logic
SET VALUED-FUNCTION
SET VALUED-FUNCTION
Boy/Male
Anglo, British, English, Finnish, Swedish
Valley; Usually with a Stream; From the Glen
Male
English
Variant spelling of Middle English Alvred, ALURED means "elf counsel."
Male
Hebrew
Variant spelling of Hebrew Sheth, SHET means "buttocks."
Male
Hindi/Indian
(सेठ) Hindi name derived from the Sanskrit word setu, SETH means "bridge." Compare with other forms of Seth.
Girl/Female
British, English, Finnish, French, Latin
Valley; Usually with a Stream; Strong
Female
Egyptian
, second wife of Antef.
Surname or Lastname
English
English : topographic name for someone who lived in a valley, Middle English valeye.
Surname or Lastname
English
English : variant spelling of See.
Female
English
Short form of English Elizabeth, BET means "God is my oath."Â
Female
Egyptian
, a sister of Sekherta.
Male
English
Anglicized form of Hebrew Sheth, SETH means "buttocks." In the bible, this is the name of the third son of Adam and Eve. Compare with other forms of Seth.
Male
English
Short form of English Stephen, STE means "crown."
Boy/Male
Egyptian Hebrew Swedish
Son of Seb and Nut.
Female
Egyptian
, a sister of Sekherta.
Female
Egyptian
, an uncertain goddess.
Male
Scandinavian
Scandinavian form of German Walther, VALTER means "ruler of the army."
Boy/Male
Anglo, British, English, Finnish, French, Swedish
Lives in the Valley; Valley; Usually with a Stream; Strong; Healthy
Female
Spanish
Spanish name SALUD means "health."
Boy/Male
English
Lives in the valley.
Female
Egyptian
, the wife of Osirtesen.
SET VALUED-FUNCTION
SET VALUED-FUNCTION
Boy/Male
Biblical
His tabernacle; his tent.
Girl/Female
Latin
Purity; Innocence.
Boy/Male
African, Arabic, Australian, Danish, Finnish, French, German, Hebrew, Indian, Muslim, Parsi
Loving; Protector Advice
Female
English
Elaborated form of English Maris, MARISELA means "of the sea."
Boy/Male
Tamil
Jagat Prakash | ஜகதபà¯à®°à®•à®¾à®·
Light of the world
Boy/Male
Hindu, Indian
It is the Month of April; Chaitram
Boy/Male
Tamil
Husband, Adored, Precious, Pleasant, Spring, Beloved by the Moon, The Moon pleasant
Male
Italian
Italian form of Latin Augustinus, AGOSTINO means "venerable."
Girl/Female
Indian, Sanskrit
Bee
Male
Irish
Irish name SCANLAN means "scandal."
SET VALUED-FUNCTION
SET VALUED-FUNCTION
SET VALUED-FUNCTION
SET VALUED-FUNCTION
SET VALUED-FUNCTION
v. t.
To be worth; to be equal to in value.
a.
Not valued; not appraised; hence, not considered; disregarded; valueless; as, an unvalued estate.
a.
Consisting of, or having, three valves; opening with three valves; as, a three-valved pericarp.
n.
Value.
a.
Highly regarded; esteemed; prized; as, a valued contributor; a valued friend.
a.
Regular; uniform; formal; as, a set discourse; a set battle.
v. t.
To compose; to arrange in words, lines, etc.; as, to set type; to set a page.
a.
Fixed in position; immovable; rigid; as, a set line; a set countenance.
a.
Changed; altered; various; diversified; as, a varied experience; varied interests; varied scenery.
v. t.
To value; to rate; -- with at.
v. i.
To fit or suit one; to sit; as, the coat sets well.
n.
See Set, n., 2 (e) and 3.
n.
One who values; an appraiser.
a.
Having a valve or valve; valvate.
a.
Having inestimable value; invaluable.
imp. & p. p.
of Value
n.
Precise signification; import; as, the value of a word; the value of a legal instrument
n.
A series of as many games as may be necessary to enable one side to win six. If at the end of the tenth game the score is a tie, the set is usually called a deuce set, and decided by an application of the rules for playing off deuce in a game. See Deuce.
imp. & p. p.
of Set
v. t.
To raise to estimation; to cause to have value, either real or apparent; to enhance in value.