Degenerate bifurcation points of periodic solutions of autonomous Hamiltonian systems

W. Radzki, S. Rybicki

We study connected branches of non-constant {$2\pi$-pe}riodic solutions of the Hamilton equation \begin{displaymath} \dot{x}(t)=λJ\nabla H(x(t)), \end{displaymath} where $λ\in\halfli…