Summary
In this paper, the method of Garabedian is applied to finite difference equations derived from the elliptic diffusion operator −D Δ +ɛ over rectangular and triangular nets. An example is given for which GARABEDIAN'S method yields a useless result.
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References
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de Meersman, R. The method of Garabedian. Numer. Math. 11, 257–263 (1968). https://doi.org/10.1007/BF02161846
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DOI: https://doi.org/10.1007/BF02161846