Three-point finite-difference schemes, Padé and the spectral Galerkin method. I. One-sided impedance approximation
نویسندگان
چکیده
منابع مشابه
Three-point finite-difference schemes, Padé and the spectral Galerkin method. I. One-sided impedance approximation
A method for calculating special grid placement for three-point schemes which yields exponential superconvergence of the Neumann to Dirichlet map has been suggested earlier. Here we show that such a grid placement can yield impedance which is equivalent to that of a spectral Galerkin method, or more generally to that of a spectral Galerkin-Petrov method. In fact we show that for every stable Ga...
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ژورنال
عنوان ژورنال: Mathematics of Computation
سال: 2001
ISSN: 0025-5718
DOI: 10.1090/s0025-5718-01-01349-7