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Some variational principles associated with ODEs of maximal symmetry. Part 1: Equations in canonical form (2212.13282v1)
Published 26 Dec 2022 in math.CA
Abstract: Variational and divergence symmetries are studied in this paper for linear equations of maximal symmetry in canonical form, and the associated first integrals are given in explicit form. All the main results obtained are formulated as theorems or conjectures for equations of a general order. Some of these results apply to linear equations of a general form and of arbitrary orders or having a symmetry algebra of arbitrary dimension.
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