Moser's Implicit Function Theorem in the Framework of Analytic Smoothing.
C.L. Siegel's Linearization Theorem in Infinite Dimensions.
The topological behaviour of a diffeomorphism near a fixed point.
Periodic Solutions of Asymptotically Linear Hamiltonian Systems.
KAM theory in configuration space.
A general Fredholm theory I: a splicing-based differential geometry
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