Integration by parts and vector differential forms in higher order variational calculus on fibred manifolds

Author
Roman Ya. Matsyuk
Institute for Applied Problems in Mechanics and Mathematics, L'viv
Abstract
Infinitesimal variation of Action functional in classical (non-quantum) field theory with higher derivatives is presented in terms of well-defined intrinsic geometric objects independent of the particular field which varies. ``Integration by parts'' procedure for this variation consists in application of nonlinear Green formula to the vertical differential of the Lagrangian. Euler-Lagrange expressions and the Green operator are calculated by simple pull-backs of certain vector bundle valued differential forms associated with the given variational problem.
Keywords
Action functional, variational calculus, fibred manifold
DOI
doi:10.30970/ms.11.1.85-107
Reference
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Pages
85-107
Volume
11
Issue
1
Year
1999
Journal
Matematychni Studii
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