{ "id": "2012.13683", "version": "v1", "published": "2020-12-26T06:47:29.000Z", "updated": "2020-12-26T06:47:29.000Z", "title": "Non-Equivalence of Stochastic Optimal Control Problems with Open and Closed Loop Controls", "authors": [ "Jiongmin Yong", "Jianfeng Zhang" ], "categories": [ "math.OC", "math.PR" ], "abstract": "For an optimal control problem of an It\\^o's type stochastic differential equation, the control process could be taken as open-loop or closed-loop forms. In the standard literature, provided appropriate regularity, the value functions under these two types of controls are equal and are the unique (viscosity) solution to the corresponding (path-dependent) HJB equation. In this short note, we show that these value functions can be different in general.", "revisions": [ { "version": "v1", "updated": "2020-12-26T06:47:29.000Z" } ], "analyses": { "subjects": [ "93E20", "49L25" ], "keywords": [ "stochastic optimal control problems", "closed loop controls", "non-equivalence", "type stochastic differential equation", "value functions" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }