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Transformation properties of a class of generalized Kawahara equations with time-dependent coefficients are studied. We construct the equivalence groupoid of the class and prove that this class is not normalized but can be presented as a union of two
Externí odkaz:
http://arxiv.org/abs/2001.00167
Autor:
Lahno, Victor I., Magda, Olena V.
The problem of group classification of one class of quasilinear equations of hyperbolic type with two independent variables has been solved completely.
Comment: 8 pages
Comment: 8 pages
Externí odkaz:
http://arxiv.org/abs/math-ph/0310049
Autor:
Magda, Olena
We have solved completely the problem of the description of quasi-linear hyperbolic differential equations in two independent variables that are invariant under three-parameter Lie groups.
Comment: 8 padge, accepted for publication in proceeding
Comment: 8 padge, accepted for publication in proceeding
Externí odkaz:
http://arxiv.org/abs/math-ph/0112058
Autor:
Magda, Olena
Publikováno v:
In Communications in Nonlinear Science and Numerical Simulation December 2012 17(12):5288-5290
Autor:
Braginets, Oksana, Magda, Olena
Publikováno v:
Lie Theory & Its Applications in Physics (9789811026355); 2016, p379-383, 5p
Akademický článek
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