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Weak convergence of first passage time processes

Published online by Cambridge University Press:  14 July 2016

Ward Whitt*
Affiliation:
Yale University

Extract

Let D = D[0, ∞) be the space of all real-valued right-continuous functions on [0, ∞) with limits from the left. For any stochastic process X in D, let the associated supremum process be S(X), wherefor any x ∊ D. It is easy to verify that S: DD is continuous in any of Skorohod's (1956) topologies extended from D[0,1] to D[0, ∞) (cf. Stone (1963) and Whitt (1970a, c)). Hence, weak convergence XnX in D implies weak convergence S(Xn) ⇒ S(X) in D by virtue of the continuous mapping theorem (cf. Theorem 5.1 of Billingsley (1968)).

Type
Short Communications
Copyright
Copyright © Applied Probability Trust 1971 

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