On Fatou Type Convergence of Convolution TypeDouble Singular Integral Operators

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摘要 Inthispaper,someapproximationformulaeforaclassofconvolutiontypedoublesingularintegraloperatorsdependingonthreeparametersofthetype(Tλf)(x,y)=∫ba∫baf(t,s)Kλ(t-x,s-y)dsdt,x,y∈(a,b),λ∈A[0,∞),(0.1)aregiven.HerefbelongstothefunctionspaceL1(〈a,b〉2),where〈a,b〉isanarbitraryintervalinR.Inthispaperthreetheoremsareproved,oneforexistenceoftheoperator(Tλf)(x,y)andtheothersforitsFatou-typepointwiseconvergencetof(x0,y0),as(x,y,l)tendsto(x0,y0,l0).Incontrasttopreviousworks,thekernelfunctionsKl(u,v)don'thavetobe2p-periodic,positive,evenandradial.Ourresultsimproveandextendsomeofthepreviousresultsof[1,6,8,10,11,13]inthreedimensionalframeandespeciallytheveryrecentpaper[15].
机构地区 不详
出版日期 2015年03月13日(中国期刊网平台首次上网日期,不代表论文的发表时间)