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Journal of Convex Analysis 12 (2005), No. 1, 013--044 Copyright Heldermann Verlag 2005 Difference Equations on Weighted Graphs Alain Bensoussan Université de Paris-Dauphine, Place du Maréchal Lattre de Tassigny, 75775 Paris, France alain.bensousson@wanadoo.fr José-Luis Menaldi Wayne State University, Dept. of Mathematics, Detroit, MI 48202, U.S.A. jlm@math.wayne.edu In discrete systems graphs setting, we mimic the variational formulation of boundary value problems. Working on with un-normalized weights rather than normalized weights, discrete Dirichlet and Neumann problems, and their probabilistic interpretations are discussed. Moreover, non-symmetric forms, non-variational setting, and an identification problem are also considered. Keywords: Connected graphs, connectivity, variational inequalities, discrete maximum principles, Markov chains. MSC: 05C35, 90C35; 05C40, 35R30, 94C12 [ Fulltext-pdf (586 KB)] for subscribers only. |