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Elliptic Systems with Some Superlinear Assumption Only Around the Origin

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Abstract

In this paper, using a priori bound techniques we study existence of positive solutions of the elliptic system:

$$\begin{aligned} \left\{ \begin{array}{lll} -\text{ div }(|x|^{\alpha _1}\nabla u) = |x|^{\beta _1} f(|x|,u,v) \ \ x \in B, \\ -\text{ div }(|x|^{\alpha _2}\nabla v) = |x|^{\beta _2} g(|x|,u,v) \ \ x \in B, \\ u(x) = 0 =v(x), \ \ \ x \in \partial B. \end{array} \right. \end{aligned}$$

where B is the unitary ball centered at the origin. Assuming that fg are nonnegative nonlinearities and that \(f(|x|,u,v)+g(|x|,u,v)\) is superlinear at 0 and at \(\infty \), we establish some results of existence of one positive solution. As an application, we establish two positive solutions for some non-homogeneous elliptic system. The main novelties here are that the nonlinearities could have growth above the critical hyperbola on some part of the domain as well as only local superlinear hypotheses at \(\infty \)

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Correspondence to Marco Aurelio Souto.

Additional information

Communicated by Nader Masmoudi.

The first author was supported by PAI-CONICYT Grant 79140015. The second author was partially supported by CNPq—Proc. 306.082/2017-9. The third author was partially supported by FONDECYT Grants 1120524 and 1161635.

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Cerda, P., Souto, M.A. & Ubilla, P. Elliptic Systems with Some Superlinear Assumption Only Around the Origin. Ann. Henri Poincaré 19, 3031–3051 (2018). https://doi.org/10.1007/s00023-018-0714-2

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  • DOI: https://doi.org/10.1007/s00023-018-0714-2

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