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

Zh. Vychisl. Mat. Mat. Fiz., 2024 Volume 64, Number 3, Pages 526–533 (Mi zvmmf11723)

Mathematical physics

On asymptotics of the solution to the Cauchy problem for a singularly perturbed operator-differential transport equation with weak diffusion in the case of several space variables

A. V. Nesterov

Plekhanov Russian University of Economics, 117997, Moscow, Russia

Abstract: A formal asymptotic expansion is constructed for the solution of the Cauchy problem for a singularly perturbed operator differential transport equation with small nonlinearities and weak diffusion in the case of several space variables. Under the conditions imposed on the data of the problem, the leading asymptotic term is described by the multidimensional generalized Burgers–Korteweg–de Vries equation. Under certain conditions, the remainder is estimated with respect to the residual.

Key words: small parameter, singular perturbations, asymptotic expansion, generalized multidimensional Burgers–Korteweg–de Vries equation.

UDC: 517.955.8 + 519.633

Received: 10.10.2023
Revised: 12.11.2023
Accepted: 17.11.2023

DOI: 10.31857/S0044466924030128


 English version:
Computational Mathematics and Mathematical Physics, 2024, 64:3, 490–496

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© Steklov Math. Inst. of RAS, 2026