Abstract
We consider a finite-difference scheme of fourth-order accuracy for the two-dimensional Poisson equation in a rectangular domain with nonlocal integral conditions in one coordinate direction. The system of finite-difference equations is solved using a generalization of the Peaceman–Rachford alternating-direction implicit method. We prove the convergence of the method and estimate the rate of convergence by using the structure of the spectrum of one-dimensional difference operators with nonlocal integral conditions.
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*The research was partially supported by the Lithuanian State Science and Studies Foundation, grant No. T-73/09.
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Sapagovas, M., Štikonienė, O. A fourth-order alternating-direction method for difference schemes with nonlocal condition*. Lith Math J 49, 309–317 (2009). https://doi.org/10.1007/s10986-009-9057-5
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DOI: https://doi.org/10.1007/s10986-009-9057-5