Abstract
We construct an abstract framework in which the dynamic programming principle (DPP) can be readily proven. It encompasses a broad range of common stochastic control problems in the weak formulation, and deals with problems in the “martingale formulation” with particular ease. We give two illustrations; first, we establish the DPP for general controlled diffusions and show that their value functions are viscosity solutions of the associated Hamilton–Jacobi–Bellman equations under minimal conditions. After that, we show how to treat singular control on the example of the classical monotone-follower problem.
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Acknowledgements
The authors would like to thank Mihai Sîrbu and Kasper Larsen for valuable conversations and acknowledge the support by the National Science Foundation under Grants DMS-0706947 (2007–2010), DMS-09556194 (2010–2015), DMS-1107465 (2012–2017) and DMS-1516165 (2015–2018). Any opinions, findings and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation (NSF).
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Fayvisovich, R., Žitković, G. A Framework for the Dynamic Programming Principle and Martingale-Generated Control Correspondences. Appl Math Optim 83, 1311–1352 (2021). https://doi.org/10.1007/s00245-019-09589-8
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DOI: https://doi.org/10.1007/s00245-019-09589-8
Keywords
- Dynamic programming principle
- Optimal stochastic control
- Control correspondences
- Martingale problem
- Singular control