A Novel Variational Principle arising from Electromagnetism

Details A Novel Variational Principle arising from Electromagnetism A Novel Variational Principle arising from Electromagnetism

2009-05-06

arxiv.org/abs/0905.0829v1

Mathematics

General Mathematics

Scientific paper

Analyzing one example of LC circuit in [8], show its Lagrange problem only have other type critical points except for minimum type and maximum type under many circumstances. One novel variational principle is established instead of Pontryagin maximum principle or other extremal principles to be suitable for all types of critical points in nonlinear LC circuits. The generalized Euler-Lagrange equation of new form is derived. The canonical Hamiltonian systems of description are also obtained under the Legendre transformation, instead of the generalized type of Hamiltonian systems. This approach is not only very simple in theory but also convenient in applications and applicable for nonlinear LC circuits with arbitrary topology and other additional integral constraints.

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