Mathematics of the USSR-Izvestiya · 1984 · 19 citations · 7 references
Natural SciencesMathematicsDifferential EquationsDynamical SystemsRepresentation TheoryDifferential GeometryLagrangian MechanicsOperator TheorySymplectic GeometryLagrangian SubmanifoldsPseudodifferential OperatorsSymplectic FormsSymplectic Spaces
A calculus of -pseudodifferential operators with symbols on is defined modulo on a closed symplectic manifold under the condition that . The class is described. On Lagrangian submanifolds a class in obstructing the definition of a canonical operator on is found. It is shown that an analogus calculus of pseudodifferential operators can be constructed with respect to homogeneity from an action of the group on . Bibliography: 22 titles.
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Lars Hörmander · Acta Mathematica · 1971 · 2.4K citations · Full text
Theory of perturbations and asymptotic methods
V. P. Maslov, Vladimir I. Arnold, V. S. Buslaev · 1972 · 144 citations