In this paper we get some lower bounds for the number of critical periods of families of centers which are perturbations of the linear one. We give a method which lets us prove that there are planar polynomial centers of ...

In this paper we get some lower bounds for the number of critical periods of families of centers which are perturbations of the linear one. We give a method which lets us prove that there are planar polynomial centers of ...

We study the existence of periodic solutions in the neighbourhood of symmetric (partially) elliptic equilibria in purely reversible Hamiltonian vector fields. These are Hamiltonian vector fields with an involutory reversing ...

We study the existence of periodic solutions in the neighbourhood of symmetric (partially) elliptic equilibria in purely reversible Hamiltonian vector fields. These are Hamiltonian vector fields with an involutory reversing ...

In this thesis, we present a procedure that encompasses the effect of all higher states in the system of the NV Center to formulate a non-diagonal effective Hamiltonian of a particular sub Hilbert space. In this case, the ...

Thi+J3:X7s project aims at the establishment of an investigation network between Brazil, Chile and France to promote the development of Mathematics in the areas of Hamiltonian Systems and Celestial Mechanics in these ...