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Displaying similar documents to “Random walk local time approximated by a brownian sheet combined with an independent brownian motion”

Multiparameter multifractional brownian motion : local nondeterminism and joint continuity of the local times

Antoine Ayache, Narn-Rueih Shieh, Yimin Xiao (2011)

Annales de l'I.H.P. Probabilités et statistiques

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By using a wavelet method we prove that the harmonisable-type -parameter multifractional brownian motion (mfBm) is a locally nondeterministic gaussian random field. This nice property then allows us to establish joint continuity of the local times of an (, )-mfBm and to obtain some new results concerning its sample path behavior.