On the optimality of periodic barrier strategies for a spectrally positive Lévy process

JL Pérez, K Yamazaki - Insurance: Mathematics and Economics, 2017 - Elsevier
We study the optimal dividend problem in the dual model where dividend payments can only
be made at the jump times of an independent Poisson process. In this context, Avanzi et …

MFGs for partially reversible investment

H Cao, X Guo - Stochastic Processes and their Applications, 2022 - Elsevier
This paper analyzes a class of infinite-time-horizon stochastic games with singular controls
motivated from the partially reversible problem. It provides an explicit solution for the mean …

Inventory control for spectrally positive Lévy demand processes

K Yamazaki - Mathematics of Operations Research, 2017 - pubsonline.informs.org
A new approach to solve the continuous-time stochastic inventory problem using the
fluctuation theory of Lévy processes is developed. This approach involves the recent …

On the bailout dividend problem for spectrally negative Markov additive models

K Noba, JL Pérez, X Yu - SIAM Journal on Control and Optimization, 2020 - SIAM
This paper studies the bailout optimal dividend problem with regime switching under the
constraint that the cumulative dividend strategy is absolutely continuous. We confirm the …

On optimal joint reflective and refractive dividend strategies in spectrally positive Lévy models

B Avanzi, JL Pérez, B Wong, K Yamazaki - Insurance: Mathematics and …, 2017 - Elsevier
The expected present value of dividends is one of the classical stability criteria in actuarial
risk theory. In this context, numerous papers considered threshold (refractive) and barrier …

Refraction–reflection strategies in the dual model

JL Pérez, K Yamazaki - ASTIN Bulletin: The Journal of the IAA, 2017 - cambridge.org
We study the dual model with capital injection under the additional condition that the
dividend strategy is absolutely continuous. We consider a refraction–reflection strategy that …

Approximation of N-player stochastic games with singular controls by mean field games

H Cao, X Guo, JS Lee - arXiv preprint arXiv:2202.06835, 2022 - arxiv.org
This paper establishes that a class of $ N $-player stochastic games with singular controls,
either of bounded velocity or of finite variation, can both be approximated by mean field …

On occupation times in the red of Lévy risk models

D Landriault, B Li, MA Lkabous - Insurance: Mathematics and Economics, 2020 - Elsevier
In this paper, we obtain analytical expression for the distribution of the occupation time in the
red (below level 0) up to an (independent) exponential horizon for spectrally negative Lévy …

On singular control for Lévy processes

K Noba, K Yamazaki - Mathematics of Operations Research, 2023 - pubsonline.informs.org
We revisit the classical singular control problem of minimizing running and controlling costs.
Existing studies have shown the optimality of a barrier strategy when driven by Brownian …

Optimal periodic replenishment policies for spectrally positive Lévy demand processes

JL Pérez, K Yamazaki, A Bensoussan - SIAM Journal on Control and …, 2020 - SIAM
We consider a version of the stochastic inventory control problem for a spectrally positive
Lévy demand process, in which the inventory can only be replenished at independent …