φ-FD: A Well-conditioned Finite Difference Method Inspired by φ-FEM for General Geometries on Elliptic PDEs - Duprez, Michel; Lleras, Vanessa; Lozinski, Alexei; Vigon, Vincent; Vuillemot, Killian (Journal of scientific computing, 2025)
Keywords: Algorithms; Analysis of PDEs; Boundary conditions; Computational Mathematics and Numerical Analysis; Elliptic differential equations; Elliptic functions; Finite difference method; Finite element analysis; Finite element method; Fourier transforms; Mathematical analysis; Mathematical and Computational Engineering; Mathematical and Computational Physics; Mathematics; Mathematics and Statistics; Numerical Analysis; Parabolic differential equations; Partial differential equations; Python; Theorems; Theoretical; Partial differential equations; Unfitted method; 65N06; General geometries; 74S20; 65N55; Finite difference method; general geometry