2 papers
math.DS2012
Boundaries of instability zones for symplectic twist maps
Marie-Claude Arnaud
We construct a symplectic twist map f of the annulus that has an essential invariant curve C such that: - C is not differentiable; - the dynamics of f restricted to C is conj…
math.OC2012
Strongly adequate functions on Banach spaces
Michel Volle, Constantin Zalinescu
The notion of adequate function has been recently introduced in order to characterize the essentially strictly functions on a reflexive Banach space among the weakly lower semicont…