Annals of Physics · 1997 · 14 citations · 21 references
Natural SciencesMathematicsPhysicsDifferential EquationsDynamical SystemsMathematical PhysicsCanonical TransformationsHamiltonian DynamicsHamiltonian SystemsInvariant ManifoldsInvariant TheoryLie GroupsAffine InvariantsClassical Invariant TheoryDifferential InvariantsInvariant Theory Of Differential EquationsInvariants
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Direct methods for the search of the second invariant
Jarmo Hietarinta · Physics Reports · 1987 · 425 citations
More exact invariants for the time-dependent harmonic oscillator
John R. Ray, James L. Reid · Physics Letters A · 1979 · 194 citations