Math 2.0

Calculus of variations and optimal control; optimization Second variation and sufficient conditions Concept

Field of extremals

Summary

A field of extremals is a family of solutions of the Euler–Lagrange equation that covers a region of the (x,y)(x, y) plane. Exactly one curve of the family passes through each point of the region. The slopes of the curves define a slope function p(x,y)p(x, y) on the region. Embedding an extremal in such a field is the key step of the Weierstrass theory of sufficient conditions for a strong minimum. It is the classical counterpart of the method of characteristics for the Hamilton–Jacobi equation.

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Further reading

  1. Web https://en.wikipedia.org/wiki/Calculus_of_variations
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