RT Report T1 Approximations for multivariate characteristics of classical risk ruin processes A1 Usábel Rodrigo, Miguel Arturo AB Multivariate characteristic of risk processes are of high interest to academic actuaries. In such modele the probability of ruin ie obtained not only considering initial reserves u but the severity of ruin y and the surplus before ruin x. This ruin probability can be expressed using an integral equation that can be efficiently solved using Gaver-Stehfest method of invertig Laplace transforms. PB Facultad de Ciencias Económicas y Empresariales. Decanato SN 2255-5471 YR 1998 FD 1998 LK https://hdl.handle.net/20.500.14352/64131 UL https://hdl.handle.net/20.500.14352/64131 LA eng DS Docta Complutense RD 6 abr 2025