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This article is cited in 5 scientific papers (total in 5 papers)
Short Communications
A ruin problem for a two-dimensional Brownian motion with controllable drift in the positive quadrant
P. Grandits Institut für Stochastik und Wirtschaftsmathematik,
Technische Universität Wien, Wien, Austria
Abstract:
In this paper a two-dimensional Brownian motion (modeling the endowment of two
companies), absorbed at the boundary of the positive quadrant, with controlled
drift, is considered. We allow that both drifts add up to the maximal value of
one. Our target is to choose the strategy in a way s.t. the expected value of
the number of surviving companies is maximized. The optimal strategy for this
problem is investigated, and it is shown rigorously that the strategy of always
pushing maximally the company with less endowment—a strategy which is
optimal in the case when one wants to maximize the probability that both
companies survive—is in fact not optimal.
Keywords:
ruin probabilities, optimal control problem, atlas model, free boundary problems.
Received: 19.09.2016 Revised: 10.01.2019 Accepted: 12.02.2019
Citation:
P. Grandits, “A ruin problem for a two-dimensional Brownian motion with controllable drift in the positive quadrant”, Teor. Veroyatnost. i Primenen., 64:4 (2019), 811–823; Theory Probab. Appl., 64:4 (2020), 646–655
Linking options:
https://www.mathnet.ru/eng/tvp5276https://doi.org/10.4213/tvp5276 https://www.mathnet.ru/eng/tvp/v64/i4/p811
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