High-Order Fast Elliptic Equation Solvers


An algorithm for approximating certain classes of elliptic partial differential equations on a rectangle is presented. The algorithm uses high-order 9-point difference approximations to the Helmholtz-type (fourth-order) or Polsson (sixth-order) equations and the fast Fourier transform. Compared to efficient second-order fast direct methods for smooth… (More)
DOI: 10.1145/355853.355859


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