Funktionaaleja
Funktionaaleja is a Finnish term that translates to "functionals" in English. In mathematics, a functional is a function whose domain is a set of functions and whose codomain is a set of numbers, often real or complex numbers. Essentially, a functional takes a function as input and produces a scalar value as output.
This concept is fundamental in areas like calculus of variations, where one seeks to find functions that
Examples of functionals include integrals of functions. For instance, the definite integral of a function f(x)
The study of functionals is crucial for understanding optimization problems in a broader context beyond simple