Diagrammatic Methods in Classical Perturbation Theory.- Hamiltonian Perturbation Theory (and Transition to Chaos).- Kolmogorov-Arnold-Moser (KAM) Theory for Finite and Infinite Dimensional Systems.- n-Body Problem and Choreographies.- Nekhoroshev Theory.- Symmetry and Perturbation Theory in Non-linear Dynamics.- Normal Forms in Perturbation Theory.- Perturbation Analysis of Parametric Resonance.- Perturbation of Equilibria in the Mathematical Theory of Evolution.- Perturbation of Systems with Nilpotent Real Part.- Perturbation Theory.- Perturbation Theory in Celestial Mechanics.- Introduction to Perturbation Theory.- Perturbation Theory and Molecular Dynamics.- Perturbation Theory for Non-smooth Systems.- Perturbation Theory for PDEs.- Perturbation Theory in Quantum Mechanics.- Semiclassical Perturbation Theory.- Convergence of Perturbative Expansions.- Quantum Bifurcations.- Perturbation of superintegrable systems.- Computational methods in perturbation theory.- Perturbation theory in general relativity and cosmology.- Perturbation Theory for Water Waves.- Perturbation Theory and the Method of Detuning.

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