Publication: On some nonlinear elliptic-equations involving derivatives of the nonlinearity
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Publication Date
1985
Authors
Chipot, Michel
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Cambridge University Press
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Abstract
The existence of weak solutions of the Dirichlet problem for nonlinear elliptic equations of the type −(∂/∂x j )(a ij (x)u x i +b j (u))+a(x)u=f is proved for nonlinearities b j which are only continuous. The proof is based on the observation that an L ∞ a priori estimate is valid which is independent of b j . The second part contains several uniqueness results and counterexamples, showing that uniqueness may fail in general.
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