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• W3138148478 abstract "We introduce a generalized finite difference method for solving a large range of fully nonlinear elliptic partial differential equations in three dimensions. Methods are based on Cartesian grids, augmented by additional points carefully placed along the boundary at high resolution. We introduce and analyze a least-squares approach to building consistent, monotone approximations of second directional derivatives on these grids. We then show how to efficiently approximate functions of the eigenvalues of the Hessian through a multi-level discretization of orthogonal coordinate frames in $$mathbb {R}^3$$ . The resulting schemes are monotone and fit within many recently developed convergence frameworks for fully nonlinear elliptic equations including non-classical Dirichlet problems that admit discontinuous solutions, Monge–Ampère type equations in optimal transport, and eigenvalue problems involving nonlinear elliptic operators. Computational examples demonstrate the success of this method on a wide range of challenging examples." @default.
• W3138148478 created "2021-03-29" @default.
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• W3138148478 date "2021-12-06" @default.
• W3138148478 modified "2023-10-15" @default.
• W3138148478 title "Convergent Finite Difference Methods for Fully Nonlinear Elliptic Equations in Three Dimensions" @default.
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• W3138148478 doi "https://doi.org/10.1007/s10915-021-01714-6" @default.
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