Journal of Mathematical Analysis and Applications · 2006 · 13 citations · 15 references
Natural SciencesMathematicsDifferential EquationsBoundary ConditionsOperator TheorySpectral TheoryVariational FormulationVariational PrinciplesWeak FormulationFredholm OperatorsGeneralized Variational InequalitiesNonlinear Variational FormulationResolvent OperatorsResolvent TheoryVariational Methods In Partial Differential Equations
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Multi-valued contraction mappings
Sam B. Nadler · Pacific Journal of Mathematics · 1969 · 2.3K citations · Full text