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JOURNALS // Fundamentalnaya i Prikladnaya Matematika // Archive

Fundam. Prikl. Mat., 2006 Volume 12, Issue 4, Pages 133–147 (Mi fpm963)

This article is cited in 6 papers

Existence of solutions of certain quasilinear elliptic equations in $\mathbb R^N$ without conditions at infinity

G. I. Laptev

Russian State Social University

Abstract: The paper deals with conditions for the existence of solutions of the equations
$$ -\sum_{i=1}^nD_iA_i(x,u,Du)+A_0(x,u)=f(x),\quad x\in\mathbb R^n, $$
considered in the whole space $\mathbb R^n$, $n\ge2$. The functions $A_i(x,u,\xi)$, $i=1,\dots,n$, $A_0(x,u)$, and $f(x)$ can arbitrarily grow as $|x|\to\infty$. These functions satisfy generalized conditions of the monotone operator theory in the arguments $u\in\mathbb R$ and $\xi\in\mathbb R^n$. We prove the existence theorem for a solution $u\in W_{\mathrm{loc}}^{1,p}(\mathbb R^n)$ under the condition $p>n$.

UDC: 513.8+517.9


 English version:
Journal of Mathematical Sciences (New York), 2008, 150:5, 2384–2394

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