= Variational bicomplex
{wiki=Variational_bicomplex}
The variational bicomplex is a mathematical framework used primarily in the field of differential geometry and the calculus of variations. It provides a way to systematically study variational problems involving differential forms and to derive the Euler-Lagrange equations for functionals defined on spaces of differential forms. At its core, the variational bicomplex constructs a structure that captures both the variational and the differential aspects of a system.
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