Math 2.0

Calculus of variations and optimal control; optimization Basic notions of the calculus of variations Concept

Functional

Summary

A functional is a map that takes an element of a vector space, usually a function, and returns a number. Length of a curve, energy of a field and the value of an integral are functionals of the curve, the field or the integrand. Functionals are the objects that the calculus of variations minimises and maximises. The linear ones, the linear forms, are the elements of the dual space and are central in functional analysis.

Where this leads

16 pages build on this one.

Further reading

  1. Web https://en.wikipedia.org/wiki/Functional_(mathematics)
About this page