Degree of mapping for nonlinear mappings of monotone type.
A classical degree function is constructed for pseudomonotone mappings from a reflexive Banach space to its dual, using Galerkin approximations. This generalizes the Leray-Schauder degree when the Banach space is a Hilbert space and yields a flexible analytical tool for the study of nonlinear elliptic problems of higher order in divergence form.
Department of Mathematics, University of Chicago, Chicago, Illinois 60637.
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Browder