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JOURNALS // Itogi Nauki i Tekhniki. Sovremennaya Matematika i ee Prilozheniya. Tematicheskie Obzory // Archive

Itogi Nauki i Tekhniki. Sovrem. Mat. Pril. Temat. Obz., 2019 Volume 160, Pages 49–60 (Mi into424)

Existence of solutions of anisotropic elliptic equations with variable indices of nonlinearity in $\mathbb{R}^n$

L. M. Kozhevnikovaab, A. Sh. Kamalåtdinova

a Sterlitamak Branch of Bashkir State University
b Elabuga Branch of Kazan (Volga Region) Federal University

Abstract: In this paper, we consider a certain class of anisotropic second-order elliptic equations of divergent type with variable indices of nonlinearity. We examine conditions of the solvability in the whole space $\mathbb{R}^n$, $n\geq 2$. We prove the existence of solutions without restrictions to the growth rate as $|\mathrm{x}|\rightarrow \infty$.

Keywords: anisotropic elliptic equation, existence, generalized solution, variable index of nonlinearity, $p(\mathrm{x})$-Laplacian.

UDC: 517.956.25

MSC: 35J25, 35J62, 35D30


 English version:
Journal of Mathematical Sciences (New York), 2021, 257:1, 48–60

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© Steklov Math. Inst. of RAS, 2025