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JOURNALS // Izvestiya Vysshikh Uchebnykh Zavedenii. Matematika // Archive

Izv. Vyssh. Uchebn. Zaved. Mat., 2023 Number 2, Pages 66–80 (Mi ivm9855)

This article is cited in 1 paper

Non-autonomous evolutionary equation of Monge–Ampere type with two space variables

I. V. Rakhmelevich

National Research Lobachevsky State University of Nizhny Novgorod, 23 Gagarin Ave., Nizhny Novgorod, 603950 Russia

Abstract: There are investigated the exact solutions of non-autonomous evolutionary equation with two space variables, the right side of which contains Monge–Ampere operator. The solutions with additive and multiplicative separation of variables are founded. There are considered the reductions of the given equation to ordinary differential equations (ODE). The classic and generalized self-similar solutions, and the solutions with functional separation of variables are received. In particular, it is shown that the given equation can be reduced to ODE, if the coefficient at the time derivative can be represented in the form of production of the functions depend on time, space variables, and unknown function. Also the reductions of the given equation to two-dimensional PDE are founded.

Keywords: evolutionary equation, Monge–Ampere equation, reduction, separation of variables, self-similar solution.

UDC: 517.957

Received: 07.04.2022
Revised: 07.04.2022
Accepted: 28.09.2022

DOI: 10.26907/0021-3446-2023-2-66-80


 English version:
Russian Mathematics (Izvestiya VUZ. Matematika), 2023, 67:2, 52–64


© Steklov Math. Inst. of RAS, 2024