@Article{CMR-29-88, author = {Xu , Huai and Tang , Ling}, title = {A Joint Density Function in the Renewal Risk Model}, journal = {Communications in Mathematical Research }, year = {2021}, volume = {29}, number = {1}, pages = {88--96}, abstract = {

In this paper, we consider a general expression for $ϕ(u, x, y)$, the joint density function of the surplus prior to ruin and the deficit at ruin when the initial surplus is $u$. In the renewal risk model, this density function is expressed in terms of the corresponding density function when the initial surplus is 0. In the compound Poisson risk process with phase-type claim size, we derive an explicit expression for $ϕ(u, x, y)$. Finally, we give a numerical example to illustrate the application of these results.

}, issn = {2707-8523}, doi = {https://doi.org/}, url = {http://global-sci.org/intro/article_detail/cmr/19031.html} }