functional

英語（米国） (en-US) 英語（イギリス） (en-GB)

IPA（発音記号）

/ˈfʌŋkt͡ʃənəl/

名詞

(mathematics) A function that takes a function as its argument; More precisely: A function y=f(x) whose argument x varies in a space of (real or complex valued) functions and whose value belongs to a monodimensional space. An example is the definite integration of integrable real functions in a real interval.

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The researcher designed a new functional that maps each continuous function to its maximum value.

詳細

意味（1）

(mathematics) A function that takes a function as its argument; More precisely: A function y=f(x) whose argument x varies in a space of (real or complex valued) functions and whose value belongs to a monodimensional space. An example is the definite integration of integrable real functions in a real interval.

意味（2）

(mathematics, functional analysis) A scalar-valued linear function on a vector space.

意味（3）

(computing) An object encapsulating a function pointer (or equivalent).

functionals （ plural ）