A simple proof of the asymptotic formula for the ruin probability of a risk
process with a positive constant interest force [derived earlier by Asmuss
en (Asmussen, S., 1998. The Annals of Applied Probability 8, 354-374)] is g
iven. The proof is based on a formula obtained by Sundt and Teugels (Sundt,
B., Teugels, J.L., 1995. Insurance: Mathematics and Economics 16, 7-22). (
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