functional

Mapping from a mathematical space to the real or complex numbers

EntityQ579600

Subclass of: function

Overview

From Wikipedia, the free encyclopedia · Read full article · Text CC BY-SA 4.0

In mathematics, a functional is a certain type of function. The exact definition of the term varies depending on the subfield.In linear algebra, it is synonymous with a linear form, which is a linear mapping from a vector space into its field of scalars In functional analysis and related fields, it refers to a mapping from a space into the field of real or complex numbers. In functional analysis, the term linear functional is a synonym of linear form; that is, it is a scalar-valued linear map. Depending on the author, such mappings may or may not be assumed to be linear, or to be defined on the whole space In computer science, it is synonymous with a higher-order function, which is a function that takes one or more functions as arguments or returns them.

Overview

All data

21 statements · 24% with external sources · numbers in brackets are citations

Codomain: set of complex numbers
Different from: functional
linear functional
Said to be the same as: complex-valued function
scalar function

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14 identifiers linking functional across the web's reference databases

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statements

24%

externally sourced

Source last edited July 18, 2026. AIDB refreshes this page daily.

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AIDB. (2026). functional (Q579600). Retrieved from https://aidb.si/e/functional-Q579600