简介:<正>Inthispaper,wedealwiththeproblemofuniquenessofentireormeromorphicfunctionsandobtainsomeresultsthatareimprovementsoverthoseofM.Ozawa,H.Ueda,K.ShibazakiandYiHongxun.Anexampleshowsthattheresultsinthispaperaresharp.
简介:Letfbeanonconstantentirefunction;letk≥2beapositiveinteger;andletabeanonzerocomplexnumber.Iff(z)=af′(z)=a,andf′(z)=af~(k)(z)=a,theneitherf=Ce~(λz)+aorf=Ce~(λz)+a(λ-1)/λ,whereCandλarenonzeroconstantswithλ~(k-1)=1.TheproofisbasedontheWiman-Valirontheoryandthetheoryofnormalfamiliesinanessentialway.
简介:Inthispaper,weobtainsomeexistenceresultsforaclassofsingularsemilinearellipticproblemswhereweimprovesomeearlierresultsofZhijunZhang.WeshowtheexistenceofentirepositivesolutionswithoutthemonotonicconditionimposedinZhang'spaper.Themainpointofourtechniqueistochooseanapproximatingsequenceandproveitsconvergence.ThedesiredcompactnesscanbeobtainedbytheSobolevembeddingtheorems.
简介:ThevaluedistributionofentirefunctionsdefinedbyDirichletseriesarestudiedinthispresentarticle.ItisprovedthatentirefunctionsdefinedbyDirichletserieshavethepitsproperty,whichimprovetherelativeresultsonlacunaryTaylorseriesobtainedbyLittlewoodJ.E.andOffordA.C.
简介:<正>Letf(z)beanentirefunctionoforderλandoffinitelowerorderμ.Ifthezerosoff(z)accumulateinthevicinityofafinitenumberofrays,then(a)λisfinite;(b)foreveryarbitrarynumberk1>1,thereexistsk2>1suchthatT(k1r,f)≤k2T(r,f)forallr≥r0.Applyingtheaboveresults,weprovethatiff(z)isextremalforYang’sinequalityp=g/2,then(c)everydeficientvalueoff(z)isalsoitsasymptoticvalue;(d)everyasymptoticvalueoff(z)isalsoitsdeficientvalue;(e)λ=μ;(f)∑a≠∞δ5(a,f)≤1-k(μ).
简介:Inthispaper,wemainlyinvestigateentiresolutionsofcomplexdifferentialequationswithcoefficientsinvolvingexponentialfunctions,andobtainthedynamicalpropertiesofthesolutions,theirderivativesandprimitives.Withsomeconditionsoncoefficients,forthesolutions,theirderivativesandtheirprimitives,weconsiderthecommonlimitingdirectionsofJuliasetandtheexistenceofBakerwanderingdomain.
简介:Themainpurposeofthispaperistostudytheproblemsontheexistenceofalgebraicsolutionsforsomesecond-ordercomplexdifferentialequationswithentirealgebraicfunctionelementcoefficients.Severaltheoremsontheexistenceofsolutionsareobtained,whichperfectthesolutiontheoryoflinearcomplexdifferentialequations.