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A remark on the existence of viscosity solutions for quasilinear elliptic equations. (English) Zbl 1103.35033

The paper deals with viscosity solutions to \(-\sum_{i,j=1}^n a_{ij}(x)u_{x_i x_j}+b(x,u,\nabla u)=0\) in a bounded, open domain \(\emptyset\neq\Omega\subset{\mathbb R}^n\) subject to a homogeneous Dirichlet boundary condition. The functions \(a, b\) are continuous, and the problem is supposed to be uniformly elliptic and proper in the sense of M. G. Crandall, H. Ishii and P.-L. Lions [Bull. Am. Math. Soc., New Ser. 27, No. 1, 1–67 (1992; Zbl 0755.35015)]. The author provides hypotheses under which Perron’s method for viscosity solutions applies, and obtains existence and uniqueness results in this context.

MSC:

35J60 Nonlinear elliptic equations
35D05 Existence of generalized solutions of PDE (MSC2000)

Citations:

Zbl 0755.35015
Full Text: DOI

References:

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