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Published online by Cambridge University Press: 15 August 2002
We discuss some implications of linear programming for Mather theory [13-15] and itsfinite dimensional approximations. We find that the complementaryslackness condition of duality theory formally implies that the Mather set lies in ann-dimensional graph and as well predicts the relevant nonlinear PDE for the “weakKAM” theory of Fathi [5-8].