Abstract
We explore variational Poisson-Nijenhuis structures on nonlinear partial differential equations and establish relations between the Schouten and Nijenhuis brackets on the initial equation and the Lie bracket of symmetries on its natural extensions (coverings). This approach allows constructing a framework for the theory of nonlocal structures.
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Translated from Teoreticheskaya i Matematicheskaya Fizika, Vol. 154, No. 2, pp. 268–282, February, 2008.
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Golovko, V.A., Krasil’shchik, I.S. & Verbovetsky, A.M. Variational Poisson-Nijenhuis structures for partial differential equations. Theor Math Phys 154, 227–239 (2008). https://doi.org/10.1007/s11232-008-0022-y
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DOI: https://doi.org/10.1007/s11232-008-0022-y