A Lévy Risk Model with Ratcheting Dividend Strategy and Historic High-Related Stopping

Table 1

Exact values of b^∗ for the Brownian motion with drift.

The optimal b^∗	ξ(x) = 0	ξ(x) = 0.2x − 0.2	ξ(x) = 0.5x − 0.2
c1 = 0.1, c2 = 0.5	18.53	22.92	36.70
c1 = 0.1, c2 = 1	15.46	19.15	30.26