functional

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functional

1. Psychol
a. relating to the purpose or context of a behaviour
b. denoting a psychosis such as schizophrenia assumed not to have a direct organic cause, like deterioration or poisoning of the brain
2. Maths a function whose domain is a set of functions and whose range is a set of functions or a set of numbers

Functional

 

a mathematical concept originating in the calculus of variations, where it denotes a variable that depends on one or more functions or curves. Examples of functionals are the area bounded by a closed curve of a given length and the work of a force field along a curve. As functional analysis developed, the term “functional” acquired the more general sense of a numbervalued function defined on a linear space.

functional

[′fəŋk·shən·əl]
(computer science)
In a linear programming problem involving a set of variables xj , j = 1, 2, …, n, a function of the form c1 x1+ c2 x2+ ⋯ + cn xn (where the cj are constants) which one wishes to optimize (maximize or minimize, depending on the problem) subject to a set of restrictions.
(mathematics)
Any function from a vector space into its scalar field.

functional

(1)
Working correctly.

functional

(2)
Pertaining to functional programming.

functional

(3)
References in periodicals archive ?
Functional diseases are conditions that have signs and symptoms of a real physical disease but no identifiable physical cause.
Considered a functional disease caused by abnormal motility of the gut and abnormal pain perception, traditional treatments aimed at relieving the symptoms of altered bowel habits with bulk forming additives, antidiarrheal medicines, and laxatives have been largely unsuccessful.
Many organic and functional diseases can cause chronic abdominal pain.

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