带有随机干扰的经典风险过程下的破产时罚金折现期望

The expected discounted penalty function for classical risk process that is perturbed by diffusion

当风险模型为带有随机干扰的经典风险过程时 ,破产时罚金折现期望函数Φ(u ,w)及其分解表达式Φd(u)和Φs(u ,w)的积分表达被得到 ,并且它们的二次连续可微性也得到证明 .所有这些都为GerberandLandry (1998)和TsaiandWillmot (2 0 0 2 )中结论的前提假定提供了可靠的保证 ,同时 ,关于破产时赤字的分布及破产概率的一些结果也被得到 .

The classical risk process perturbed by diffusion is considered. The integral expressions of the expected discounted penalty function at ruin Φ(u,w) and its decomposed formulas Φ d(u) and Φ s(u,w) are obtained, and their twice-continuous differentiability are proved. By the way, some results about the distribution of the deficit at ruin and the probability of ruin are derived.