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ESSENTIAL SUPREMUM WITH RESPECT TO A RANDOM PARTIAL ORDER
Youri Kabanov 1, Emmanuel Lépinette ( ) 2
(01/05/2012)

Inspired by the theory of nancial markets with transaction costs, we study a concept of essential supremum in the framework where a random partial order in Rd is lifted to the space L0(Rd) of d-dimensional random variables. In contrast to the classical de nition, we de ne the essential supremum as a subset of random variables satisfying some natural properties. An application of the introducednotion to a hedging problem under transaction costs is given.
1 :  Laboratoire de Mathématiques (LM-Besançon)
CNRS : UMR6623 – Université de Franche-Comté
2 :  CEntre de REcherches en MAthématiques de la DEcision (CEREMADE)
CNRS : UMR7534 – Université Paris IX - Paris Dauphine
Mathématiques/Probabilités
Essential Supremum – random partial order – transaction costs
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