Integrability of exponential process and its application to backward stochastic differential equations

被引:8
|
作者
Gashi, Bujar [1 ]
Li, Jiajie [1 ]
机构
[1] Univ Liverpool, Dept Math Sci, Liverpool L69 7ZL, Merseyside, England
关键词
exponential process; unbounded coefficients; linear and Riccati BSDEs; market completeness; optimal investment; VARIANCE PORTFOLIO SELECTION; OPTIMAL INVESTMENT; MARKET; MODEL; RISK; CONSUMPTION;
D O I
10.1093/imaman/dpy008
中图分类号
C93 [管理学];
学科分类号
12 ; 1201 ; 1202 ; 120202 ;
摘要
We consider the integrability problem of an exponential process with unbounded coefficients. The integrability is established under weaker conditions of Kazamaki type, which complements the results of Yong obtained under a Novikov type condition. As applications, we consider the solvability of linear backward stochastic differential equations (BSDEs) and market completeness, the solvability of a Riccati BSDE and optimal investment, all in the setting of unbounded coefficients.
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页码:335 / 365
页数:31
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