Abstract
We show that the value function in a stochastic differential game does not change if we keep the same space (Ω,ℱ) but introduce probability measures by means of Girsanov's transformation depending on the policies of the players. We also show that the value function does not change if we allow the driving Wiener processes to depend on the policies of the players. Finally, we show that the value function does not change if we perform a random time change with the rate depending on the policies of the players.
Original language | English (US) |
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Pages (from-to) | 4224-4243 |
Number of pages | 20 |
Journal | Stochastic Processes and their Applications |
Volume | 124 |
Issue number | 12 |
DOIs | |
State | Published - Dec 2014 |
Bibliographical note
Funding Information:The author is sincerely grateful to the referee who raised an important question now addressed in the introduction. The author was partially supported by NSF Grant DMS-1160569 .
Keywords
- Isaacs equation
- Stochastic differential games
- Value functions