2022
DOI: 10.5802/ambp.409
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On some inequalities for the optional projection and the predictable projection of a discrete parameter process

Masato Kikuchi

Abstract: Let (Ξ©, Ξ£, P) be a nonatomic probability space. If F = ( F 𝑛 ) π‘›βˆˆZ+ is a filtration of Ξ© and if 𝑓 = ( 𝑓 𝑛 ) π‘›βˆˆZ+ is a stochastic process on Ξ© such that 𝑓 𝑛 is integrable for all 𝑛 ∈ Z + , the optional projectionOne of the main results gives a necessary and sufficient condition on 𝑋 for the inequality Sur quelques inΓ©galitΓ©s pour la projection optionnelle et la projection prΓ©visible d'un processus de paramΓ¨tre discretRΓ©sumΓ© Soit (Ξ©, Ξ£, P) un espace de probabilitΓ© non atomique. Si F = ( F 𝑛 ) est une … Show more

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