Pacific Journal of Mathematics · 1976 · 70 citations · 40 references
Natural SciencesMathematicsApplied MechanicsDifferential EquationsDynamical SystemsContinuous Dynamical SystemsContinuous SystemsOperator TheoryStability TheorySystems Of Differential EquationsBounded Linear OperatorsBounded OperatorsLinear FunctionalsNonlinear SystemsOperator InequalitiesOscillation TheorySecond-order Differential EquationsSelf-adjoint Operators
Let X be a Hubert space and let 3 = &(%, X) be the Banach algebra of bounded linear operators from 'M to 'M with the usual operator norm. Let .:/ be the subspace of $ consisting of the self adjoint operators, and consider the second order differential system (1)
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A criterion of oscillatory stability
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On the differentiability of multifunctions
F. S. de Blasi · Pacific Journal of Mathematics · 1976 · 109 citations · Full text