Helicity-type integral invariants for Hamiltonian systems
published by Mikhail Vladimirovich Deryabin
in 2007
and research's language is
English
Download
Abstract in English
In this note, we consider generalizations of the asymptotic Hopf invariant, or helicity, for Hamiltonian systems with one-and-a-half degrees of freedom and symplectic diffeomorphisms of a two-disk to itself.