Title
Local independence of fractional Brownian motion
Abstract
Let σ(t,t′) be the sigma-algebra generated by the differences Xs−Xs′ with s,s′∈(t,t′), where (Xt)−∞<t<∞ is the fractional Brownian motion with Hurst index H∈(0,1). We prove that for any two distinct timepoints t1 and t2 the sigma-algebras σ(t1−ε,t1+ε) and σ(t2−ε,t2+ε) are asymptotically independent as ε↘0. We show the independence in the strong sense that Shannon’s mutual information between the two σ-algebras tends to zero as ε↘0. Some generalizations and quantitative estimates are also provided.
Year
DOI
Venue
2007
10.1016/j.spa.2009.05.004
Stochastic Processes and their Applications
Keywords
Field
DocType
60G15,(60G18,94A99,60H99)
Mathematical analysis,Stochastic process,Infinity,Sigma-algebra,Sigma,Local independence,Fractional Brownian motion,Mathematics
Journal
Volume
Issue
ISSN
119
10
0304-4149
Citations 
PageRank 
References 
1
0.43
0
Authors
2
Name
Order
Citations
PageRank
Ilkka Norros161386.52
Eero Saksman215830.82