Palavra-chave: PERIODIC ORBIT

CYCLE AVERAGING METHOD NORMAL FORM FOLD-FOLD DISCONTINUOUS VECTOR FIELD BIFURCATION CAMPO VETORIAL VECTOR FIELD ISOCHRONOUS CENTER PONTO CRITICO SINGULARITY INVARIANT TORUS NONSMOOTH DYNAMICAL SYSTEMS DIFEOMORFISMO BIFURCACAO HETEROCLINIC LOOP REVERSIBILITY HAMILTONIAN MINIMAL SET INVARIANT MANIFOLD DIFFEOMORPHISM ESTABILIDADE ESTRUTURAL DISCONTINUOUS DIFFERENTIAL EQUATIONS LIMIT CYCLE RESONANCE FILIPPOV SYSTEMS AVERAGING