Abstract
We consider a two-sided method for solving elliptic boundary value problems. On a sequence of grids the special function s is formed. On every grid the function s is refined to minimize the defect. Using the function s and the principle of monotonicity, the boundaries of exact solution s, s are constructed.
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References
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Dobronets, B.S. Two-sided Multigrid Method for Elliptic Boundary Value Problems. Reliable Computing 3, 297–303 (1997). https://doi.org/10.1023/A:1009983126109
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DOI: https://doi.org/10.1023/A:1009983126109