Open Access
November 2005 Small time path behavior of double stochastic integrals and applications to stochastic control
Patrick Cheridito, H. Mete Soner, Nizar Touzi
Ann. Appl. Probab. 15(4): 2472-2495 (November 2005). DOI: 10.1214/105051605000000557
Abstract

We study the small time path behavior of double stochastic integrals of the form 0t(0rb(u) dW(u))TdW(r), where W is a d-dimensional Brownian motion and b is an integrable progressively measurable stochastic process taking values in the set of d×d-matrices. We prove a law of the iterated logarithm that holds for all bounded progressively measurable b and give additional results under continuity assumptions on b. As an application, we discuss a stochastic control problem that arises in the study of the super-replication of a contingent claim under gamma constraints.

Copyright © 2005 Institute of Mathematical Statistics
Patrick Cheridito, H. Mete Soner, and Nizar Touzi "Small time path behavior of double stochastic integrals and applications to stochastic control," The Annals of Applied Probability 15(4), 2472-2495, (November 2005). https://doi.org/10.1214/105051605000000557
Published: November 2005
Vol.15 • No. 4 • November 2005
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