Download or read book Calculus of Variations written by Izrailʹ Moiseevich Gelʹfand and published by Prentice Hall. This book was released on 1963 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: Elements of the theory -- Further generalizations -- The general variation of a functional -- The canonical form of the euler equations and related topics -- The second variation : sufficient conditions for a weak extremum -- Fields : sufficient conditions for a strong extremum -- Variational problems involving multiple integrals -- Direct methods in the calculus of variations -- Appendix I. Propagation of disturbances and the canonical equations -- Appendix II. Variational methods in problems of optimal control.