Irina Yehorchenko
Irina Yehorchenko
Senior Researcher, Department of Mathematical Physics, Institute of Mathematics of the NAS of
Verified email at - Homepage
Cited by
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Second-order differential invariants of the rotation group O(n) and of its extensions: E(n), P(1, n), G(1, n)
WI Fushchich, IA Yegorchenko
Acta Applicandae Mathematica 28, 69-92, 1992
On reduction of the nonlinear many-dimensional wave equations and compatibility of the d’Alembert–Hamilton system
WI Fushchych, RZ Zhdanov, IA Yegorchenko
J. Math. Anal. Appl 160, 352-360, 1991
Nonlinear representation of the Poincaré algebra and invariant equations
IA Yehorchenko
Symmetry Analysis of Equations of Mathematical Physics, 62-66, 1992
The symmetry and exact solutions of the nonlinear d’Alembert equation for complex fields
WI Fushchych, IA Yegorchenko
J. Phys. A 22, 2643-2652, 1989
Differential invariants for Galilei algebra
WI Fushchych, IA Yehorchenko
Dokl. Acad. Nauk. Ukr. SSR, Ser. A, 19-34, 1989
Group classification of multidimensional nonlinear wave equations
OF Vasilenko, IA Yehorchenko
Proceedings of Institute of Mathematics of NAS of Ukraine 36, 63-66, 2001
Differential invariants for a nonlinear representation of the Poincaré algebra. Invariant equations
I Yehorchenko
Proc. of the Second Int. Conf.“Symmetry in Nonlinear Mathematical Physics …, 1997
Differential invariants for Poincaré algebra and conformal algebra
WI Fushchych, IA Yehorchenko
Dokl. Acad. Nauk. Ukr. SSR, Ser. A, 46-53, 1989
Group classification of generalized eikonal equations
RO Popovych, IA Ehorchenko
Ukrainian Mathematical Journal 53 (11), 1841-1850, 2001
Group classification with respect to hidden symmetry
I Yehorchenko
Proc. Inst. Math. NAS Ukraine 50, 290-297, 2004
Differential invariants and construction of conditionally invariant equations
I Yehorchenko
arXiv preprint math-ph/0304029, 2003
Conditional invariance and exact solutions of the Klein-Gordon-Fock equation
IA Yehorchenko, AI Vorobyova
Reports of the Nat. Acad. Sci. of Ukraine, 19-22, 1992
Sets of conditional symmetry operators and exact solutions for wave and generalised heat equations
IA Yehorchenko, AI Vorobyova
Proceedings of Fifth International Conference” Symmetry in Nonlinear …, 2004
Second-order differential invariants for some extensions of the Poincaré group and invariant equations
I Yehorchenko
Journal of Nonlinear Mathematical Physics 3 (1-2), 186-195, 1996
Non-Lie ansatzen and conditional symmetry of the nonlinear Schrödinger equation
VI Fushchich, IA Egorchenko
Ukrainian Mathematical Journal 43 (12), 1507-1515, 1991
On symmetry properties of complex-valued nonlinear wave equations
VI Fushchich, IA Egorchenko
Doklady Akademii Nauk SSSR 298 (2), 347-351, 1988
Conditional symmetry and reductions for the two-dimensional nonlinear wave equation. I. General case
I Yehorchenko
arXiv preprint arXiv:1010.4913, 2010
Solutions of the system of d'Alembert and eikonal equations, and classification of reductions of PDEs
I Yehorchenko
Journal of Physics: Conference Series 621 (1), 012018, 2015
Ansatzes and exact solutions for nonlinear Schrodinger equations
I Yehorchenko
arXiv preprint arXiv:1412.1889, 2014
On reduction of multi-dimensional non-linear wave equation to two-dimensional equations
WI Fushchych, IA Yehorchenko
arXiv preprint math-ph/0610020, 2006
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