A Set-indexed Fractional Brownian Motion

Erick Herbin () and Ely Merzbach ()
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Erick Herbin: Dassault Aviation
Ely Merzbach: Bar Ilan University

Journal of Theoretical Probability, 2006, vol. 19, issue 2, 337-364

Abstract: We define and prove the existence of a fractional Brownian motion indexed by a collection of closed subsets of a measure space. This process is a generalization of the set-indexed Brownian motion, when the condition of independance is relaxed. Relations with the Lévy fractional Brownian motion and with the fractional Brownian sheet are studied. We prove stationarity of the increments and a property of self-similarity with respect to the action of solid motions. Moreover, we show that there no “really nice” set indexed fractional Brownian motion other than set-indexed Brownian motion. Finally, behavior of the set-indexed fractional Brownian motion along increasing paths is analysed.

Keywords: Fractional Brownian motion; Gaussian processes; stationarity; self-similarity; set-indexed processes; 62G05; 60G15; 60G17; 60G18 (search for similar items in EconPapers)
Date: 2006
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DOI: 10.1007/s10959-006-0019-0

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