We propose a generalized procedure of separation of variables for nonlinear wave equations and construct broad classes of exact solutions of these equations that cannot be obtained by the classical Lie method and the method of conditional symmetries.
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References
P. J. Olver, Applications of Lie Groups to Differential Equations, Springer, New York (1986).
V. A. Galaktionov, S. A. Posashkov, and S. R. Svirshchevskii, “Generalized separation of variables for differential equations with polynomial nonlinearities,” Differents. Uravn., 31, No. 2, 252–261 (1995).
S. I. Pokhozaev, “On one Dirichlet problem,” Zh. Prikl. Mekh. Tekhn. Fiz., No. 2, 5–10 (1989).
V. A. Galaktionov and S. A. Posashkov, “On new exact solutions of parabolic equations with quadratic nonlinearities,” Zh. Vychisl. Mat. Mat. Fiz., 29, No. 4, 497–506 (1989).
V. A. Galaktionov and S. R. Svirshchevski, Exact Solutions and Invariant Subspaces of Nonlinear Partial Differential Equations in Mechanics and Physics, CRC (2007).
A. D. Polyanin and V. F. Zaitsev, Nonlinear Equations of Mathematical Physics. Exact Solutions. A Handbook [in Russian], Fizmatlit, Moscow (2002).
W. F. Amines and R. J. Lohner, “Group properties of u tt = [f (u) u x ] x ,” Int. J. Nonlin. Mech., 16, No. 5/6, 439–447 (1981).
V. I. Fushchych, M. I. Serov, and V. K. Repeta, “Conditional symmetry, reduction, and exact solutions of a nonlinear wave equation,” Dopov. Akad. Nauk Ukr., No. 5, 29–34 (1991).
A. G. Nikitin, “Group classification of systems of nonlinear re action-diffusion equations with triangular diffusion matrix,” Ukr. Mat. Zh., 59, No. 3, 395–411 (2007).
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Translated from Ukrains’kyi Matematychnyi Zhurnal, Vol. 61, No. 7, pp. 892–905, July, 2009.
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Barannyk, A.F., Barannyk, T.A. & Yuryk, I.I. Generalized procedure of separation of variables and reduction of nonlinear wave equations. Ukr Math J 61, 1055–1074 (2009). https://doi.org/10.1007/s11253-009-0270-5
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DOI: https://doi.org/10.1007/s11253-009-0270-5