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JOURNALS // Zhurnal Vychislitel'noi Matematiki i Matematicheskoi Fiziki // Archive

Zh. Vychisl. Mat. Mat. Fiz., 2023 Volume 63, Number 11, Pages 1850–1858 (Mi zvmmf11650)

Partial Differential Equations

Exact solutions of a nonlinear equation describing blow-up instability in self-oscillatory systems

A. I. Aristovab

a Faculty of Computational Mathematics and Cybernetics, Moscow State University, 119992, Moscow, Russia
b Federal Research Center "Computer Science and Control" of Russian Academy of Sciences, 119333, Moscow, Russia

Abstract: A nonclassical fourth-order partial differential equation describing blow-up instability in self-oscillatory systems is studied. Several classes of exact solutions of this equation are constructed. It is shown that these solutions include ones growing to infinity in a finite time, ones bounded globally in time, and ones bounded on any finite time interval, but not globally.

Key words: nonlinear partial differential equations, blow-up of solutions, exact solutions.

UDC: 517

Received: 13.03.2023
Revised: 28.03.2023
Accepted: 30.04.2023

DOI: 10.31857/S0044466923110042


 English version:
Computational Mathematics and Mathematical Physics, 2023, 63:11, 2081–2089

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© Steklov Math. Inst. of RAS, 2026