The Perturbed Sparre Andersen Model with Interest and a Threshold Dividend Strategy

  • Wei WangEmail author


In this paper, we consider a Sparre Andersen model perturbed by diffusion (in which the inter-claim times are generalized Erlang(n)-distributed) with a constant interest under a threshold dividend payment strategy. Under such a strategy, no dividends are paid if the insurer’s surplus is below a certain threshold level. When the surplus is above the threshold level, part of the premium income and all of the interest income are paid out as dividends. Integro-differential equations with certain boundary conditions for the moment generating functions and moment functions of the present value of all dividends until ruin are derived. We also derive the integro-differential equations with boundary conditions for the Gerber–Shiu functions. Explicit expressions are given in terms of some functions related to high order integro-differential equations when the inter-claim times are Erlang(2) and Erlang(1) distributed.


Gerber–Shiu function Moment generating function Threshold dividend strategy Integro-differential equation 

AMS 2000 Subject Classifications

Primary 60K10 91B30; Secondary 60K05 


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© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.College of Mathematical ScienceTianjin Normal UniversityTianjinChina

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