QUASI-SURE CONVERGENCE RATE OF EULER SCHEME FOR STOCHASTIC DIFFERENTIAL EQUATIONS

(整期优先)网络出版时间:2014-01-11
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LetXt(x)bethesolutionofstochasticdierentialequationswithsmoothandboundedderivativescoeffcients.LetXnt(x)betheEulerdiscretizationschemeofSDEswithstep2-n.Inthisnote,weprovethatforanyR>0andγ∈(0,1/2),supt∈[0,1],|x|≤R|Xnt(x,ω)-Xt(x,ω)|≤ξR,γ(ω)2-nγ,n≥1,q.e.,whereξR,γ(ω)isquasi-everywherefinite.