On Some Stochastic Integrals and Dold a Stopped Brownian Motion

Document Type : Original Article

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Abstract

For every non-negative number , let X(θ ,t) be a Brownian motion Let Tθ be the first time the process drops a specified amount below its maximum to data. We study stochastic integrals of the form Y(s) = ∫[0, s] v(θ) dw(θ) ,s ≥ 0, where W(θ) = x (θ,T) and V(θ) is a nonanticipating random process. It is assumed that W(θ) has independent increments. We derive an exponential bound for (p(y(s ≥ b))).

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