“…A combination of an optimal reinsurance problem with multiple reinsurers and an optimal dividend problem is discussed, where dividends with fixed costs and taxes are paid to shareholders of the insurance company. Mathematically, the optimal dividend problem is related to an impulse control problem and has been studied in the literature, see for example, Bai and Guo [3], Cadenillas et al [6], Meng and Siu [14], [15], [16], Meng [17], Meng et al [18], Sotomayor and Cadenillas et al [21] and Meng et al [20]. Under certain conditions, a combined proportional reinsurance treaty is shown to be optimal in the class of plausible reinsurance treaties.…”