Ukrainian Mathematical Journal · 1991 · 25 citations · 0 references
Natural SciencesMathematicsPhysicsDynamical SystemsMathematical PhysicsTheoretical PhysicsEigenvalue ProblemsNumerical StabilityOperator TheoryPerturbation MethodsPerturbation TheorySingular Perturbation TheoryMatrix Perturbation TheoryPerturbation Theory Of OperatorsSelf-adjoint Eigenvalue ProblemsSelf-adjoint OperatorsSingular Perturbation Analysis