TY - JOUR T1 - Existence of Viscosity Solutions of Second Order Fully Nonlinear Elliptic Equations AU - Bian Baojun JO - Journal of Partial Differential Equations VL - 1 SP - 21 EP - 32 PY - 1991 DA - 1991/04 SN - 4 DO - http://doi.org/ UR - https://global-sci.org/intro/article_detail/jpde/5758.html KW - Viscosity solutions KW - Second order fully nonlinear elliptic equations KW - Existence AB - We consider the problem of existence for viscosity solutions of seoond order fully nonlinear elliptic partial differential equations F(D²u, Du, u, z) = 0. We prove existence results for viscosity solutions in W^{1,∞} under assumptions that function F satisfies the natural structure conditions. We do not assume F is convex.