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JOURNALS // Zhurnal Srednevolzhskogo Matematicheskogo Obshchestva // Archive

Zhurnal SVMO, 2019 Volume 21, Number 3, Pages 317–328 (Mi svmo743)

This article is cited in 1 paper

Mathematics

The nonlocal solvability conditions for a system of two quasilinear equations of the first order with absolute terms

M. V. Dontsova

Lobachevski State University of Nizhni Novgorod

Abstract: The Cauchy problem for a system of two first-order quasilinear equations with absolute terms is considered. The study of this problem's solvability in original coordinates is based on the method of an additional argument. The existence of the local solution of the problem with smoothness which is not lower than the smoothness of the initial conditions, is proved. Sufficient conditions of existence are determined for the nonlocal solution that is continued by a finite number of steps from the local solution. The proof of the nonlocal resolvability of the Cauchy problem relies on original global estimates.

Keywords: method of an additional argument, global estimates, Cauchy problem, first-order partial differential equations.

UDC: 517.9

MSC: Primary 35F50; Secondary 35F55, 35A01, 35A02, 35A05

DOI: 10.15507/2079-6900.21.201903.317-328



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