Аннотация:
Third-order ordinary differential equations with Lie symmetry algebras isomorphic to the nonsolvable algebra sl(2,R) admit solvable structures. These solvable structures can be constructed by using the basis elements of these algebras. Once the solvable structures are known, the given equation can be integrated by quadratures as in the case of solvable symmetry algebras.
Ключевые слова:
first integral; solvable structure; C∞-symmetry; nonsolvable algebra.
Финансовая поддержка
This research was partially supported by the University of Cádiz and Junta de Andalucía research group FQM 377. A. Ruiz acknowledges the support of a grant of the University of Cádiz program “Movilidad Internacional, Becas UCA-Internacional-Posgrado” during his stay at the University of Minnesota.
Поступила:11 ноября 2015 г.; в окончательном варианте 3 августа 2016 г.; опубликована 8 августа 2016 г.
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