考虑二阶保费率下的Erlang(2)风险过程,得到了Gerber—Shiu函数满足的微分一积分方程及更新方程,并且当理赔额服从有理分布时,给出了Gerber-Shiu函数确切表达式。
In this paper, we consider the Erlang(2) risk process with a two-step premium rate. Firstly, the integro-differential equations and the renewal equations for the Gerber-Shiu function are derived, respectively. Secondly, the expression for the Gerber-Shiu function is deduced when the claim size is rationally distributed.