Makai, MihalyOrechwa, Yuri2020-07-072020-07-072002-01-02Makai, M., & Orechwa, Y. (2002). Solutions of boundary-value problems in discretized volumes. <i>Electronic Journal of Differential Equations, 2002</i>(01), pp. 1-20.1072-6691https://hdl.handle.net/10877/11979The solution of a boundary-value problem in a volume discretized by finitely many copies of a tile is obtained via a Green's function. The algorithm for constructing the solution exploits results from graph and group theory. This technique produces integral equations on the internal and external boundaries of the volume and demonstrates that two permutation matrices characterize the symmetries of the volume. We determine the number of linearly independent solutions required over the tile and the conditions needed for two boundary-value problems to be isospectral. Our method applies group theoretical considerations to asymmetric volumes.Text20 pages1 file (.pdf)enAttribution 4.0 InternationalBoundary value problemCovering groupEquispectral volumesArticleThis work is licensed under a Creative Commons Attribution 4.0 International License.