Vinogradov’s cohomological geometry of partial differential equations

Author:

Pugliese Fabrizio,Sparano Giovanni,Vitagliano Luca

Abstract

Secondary Calculus is a formal replacement for differential calculus on the space of solutions of a system of possibly non-linear partial differential equations and it is essentially due to Alexandre M. Vinogradov and his collaborators. Many coordinate free properties of PDEs find their natural place in Secondary Calculus including: symmetries and conservation laws, variational principles and the coordinate free aspects of the calculus of variations, recursion operators and Hamiltonian structures, etc. The building blocks of this language are horizontal cohomologies of diffieties, i.e. infinite prolongations of PDEs, and their versions with local coefficients. The main paradigm of Secondary Calculus is the principle, due to A. M. Vinogradov, roughly stating that: differential calculus on the space of solutions of a PDE is calculus up to homotopy on the horizontal de Rham algebra of the associated diffiety. We will review the fundamentals of Secondary Calculus including its main motivations. In the last part of the paper, we will try to explain the role of homotopy in the theory.

Publisher

American Mathematical Society

Reference33 articles.

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