Sistemas impulsivos com retardamento: soluções periódicas. / Periodic solutions of an impulsive differential system with delay: an Lp approach.

AUTOR(ES)
DATA DE PUBLICAÇÃO

2000

RESUMO

We prove the existence of periodic solutions of some retarded functional differential equations subjected to impulsive self-supporting conditions. Due to the impulses, solutions exhibit discontinuites of the first kind and this forces the consideration of more general phase spaces than C([-r,0],Rn). We show that periodic solutions can emanate from the origin through local Hopf bifurcations. We also state an existence theorem for slowly spiralling periodic solutions. This theorem is accomplished by a combination of the self-supporting condition with the ejectivity of the origin with respect to a return operator.

ASSUNTO(S)

periodic solutions equações diferenciais com retardamento impulsos basic theory in lp soluções periódicas impulses teoria básica em lp ejectivity retarded differential equations ejetividade

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