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ЖУРНАЛЫ // Theory of Stochastic Processes // Архив

Theory Stoch. Process., 2008, том 14(30), выпуск 2, страницы 116–138 (Mi thsp150)

Penalisations of brownian motion with its maximum and minimum processes as weak forms of Skorokhod embedding

B. Roynettea, P. Valloisa, M. Yorb

a Institut Elie Cartan, Université Henri Poincaré, B.P.239, 54506 Vandoeuvre les Nancy Cedex
b Laboratoire de Probabilités et Modèles Aléatoires, Université Paris VI et VII 4 place Jussien-Case 188; F-75252 Paris Cedex 05; Institut Universitaire de France

Аннотация: We develop a Brownian penalisation procedure related to weight processes $(F_t)$ of the type: $F_t:=f(I_t, S_t)$ where $f$ is a bounded function with compact support and $S_t$ (resp. $I_t$) is the one-sided maximum (resp. minimum) of the Brownian motion up to time $t.$ Two main cases are treated: either $F_t$t is the indicator function of $\{I_t\geq\alpha, S_t\leq\beta\}$ or $F_t$t is null when $\{S_t-I_t>c\}$ for some $c>0.$ Then we apply these results to some kind of asymptotic Skorokhod embedding problem.

Ключевые слова: Skorokhod’s problem, penalisation, one-sided maximum and minimum, Laplace’s method.

MSC: 60G17, 60G40, 60G44, 60H10, 60J25, 60J60, 60J65

Язык публикации: английский



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