Local and nonlocal solvable structures in ODEs reduction

Details Local and nonlocal solvable structures in ODEs reduction Local and nonlocal solvable structures in ODEs reduction

2008-07-21

arxiv.org/abs/0807.3276v2

Physics

Mathematical Physics

Scientific paper

10.1088/1751-8113/42/3/035210

Solvable structures, likewise solvable algebras of local symmetries, can be used to integrate scalar ODEs by quadratures. Solvable structures, however, are particularly suitable for the integration of ODEs with a lack of local symmetries. In fact, under regularity assumptions, any given ODE always admits solvable structures even though finding them in general could be a very difficult task. In practice a noteworthy simplification may come by computing solvable structures which are adapted to some admitted symmetry algebra. In this paper we consider solvable structures adapted to local and nonlocal symmetry algebras of any order (i.e., classical and higher). In particular we introduce the notion of nonlocal solvable structure.

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