We consider a zero-sum optimal stopping game in which the value of the reward is revealed when the second player stops, instead of it being revealed after the first player's stopping time. Such problems appear in the context of financial mathematics when one sells and buys two different American...

We consider the optimal problem $\sup_{\tau\in\mathcal{T}_{\eps,T}}\mathbb{E}\left[\sum_{i=1}^n \phi_{(\tau-\eps^i)^ }^i\right]$, where $T0$ is a fixed time horizon, $(\phi_t^i)_{0\leq t\leq T}$ is progressively measurable with respect to the Brownian filtration, $\eps^i\in[0,T]$ is a constant,...

We consider multi-player stopping games in continuous time. Unlike Dynkin games, in our games the payoff of each player is revealed after all the players stop. Moreover, each player can adjust her own stopping strategy by observing other players' behaviors. Assuming the continuity of the payoff...

We consider a two-player non-zero-sum stopping game in which the payoff of each player is revealed when both players stop, instead of it being revealed after the first player's stopping time. Such problems appear in the context of economics and finance, e.g., when two company try to choose good...

We use martingale and stochastic analysis techniques to study a continuous-time optimal stopping problem, in which the decision maker uses a dynamic convex risk measure to evaluate future rewards. We also find a saddle point for an equivalent zero-sum game of control and stopping, between an...

We develop a theory for solving continuous time optimal stopping problems for non-linear expectations. Our motivation is to consider problems in which the stopper uses risk measures to evaluate future rewards. Our development is presented in two parts. In the first part, we will develop the...

We study a robust optimal stopping problem with respect to a set P of mutually singular probabilities. This can be interpreted as a zero-sum controller-stopper game in which the stopper is trying to maximize its pay-off while an adverse player wants to minimize this payoff by choosing an...

We analyze an optimal stopping problem with random maturity $\tau_0$ under a nonlinear expectation over a weakly compact set of mutually singular probabilities. The maturity $\tau_0$ is specified as the hitting time to level 0 of some continuous index process $X$ at which the payoff process $Y$...