数学学报 1957, 7(4) 477-491 DOI:   cnki:ISSN:0583-1431.0.1957-04-001   ISSN: 0583-1431 CN: 11-2038/O1

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吴学谋
函数集的完全性
吴学谋
武汉大学数学系四年级
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MSC2000 完全性:6754,解析函数族:5517,整函数:3327,函数集:2478,唯一性定理:2054,Minkowski不等式:785,有限平面:755
COMPLETENESS OF SETS OF FUNCTIONS
OU O-MO(Wuhang University)
Abstract: If the real function g(x)is non-decreasing and of bounded variation on[-π,π].The set {B_n(x)}_1~∞(?)∠~p(-π,π;dg),p>1,is complete ∠~p(-π,π;dg), p>1,if(?)and f(x)∈∠~q(-π,π;dg),1/p+1/q=1,imly that f(x)=0 almost everywhere on [-π,π].In this paper,we suppose the following conditions are usually satisfied:g(x-0)=g(x);(?) If 0<λ_1<λ_2…and let λ(r)be the number of λ_n0,then(?),θ ∈ E,is complete∠~p(-π,π;dg),p>1,where E(?)[-π,π]is some set of points havingpositive Lebesgue measure.7)If G(z)∈(M_1)is analytic in |z|<1 and continuous on |z|≤1,let us denot the modulus of continuity of G(e~(ix))by ω(t),then either(?);(?)θ ∈ E, is complete ∠~p(-π,π;dg),p>1.If(?),01,where ψ_E(t)=mes E_t,and E_t is the closed set of pointswith distance≤t from E.8)Let G(z)∈(M_1)be an analytic function defined in unit circle.If|α_n|,n=0,1,2,…,lim α_n=α,|a|<1; |α_n-α|≤1-|α|; ∑|α_n--α_(n+1)|<∞,then(?),p>1.9)Let(?)and μ(r) be the number ofβ_n≤r.For an entire function G(z)∈(M_1),if(?)then(?)is complete ∠~p(-π,π;dg),p>1.10)If{α_n}possesses a limite point α,|α|≠1,∞,then(?)complete ∠~p(-π,π;dg),p>1.If{α_n}possesses the properties describedin 8),then(?)is complete ∠~p(-π,π;dg)p>1.In the second part,for the class ∠~p(0,l),we have considered theproblem of the completeness of a set Of functions of the following forms:{G(α_ne~(ix))};(?);{G(α_nx)};(?);(?);(?)Naturally,some similar results are obtained.The completeness of above sets of functions with respect to the classesH_2(D)or E_2(D)is also discussed.
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收稿日期 1956-05-07 修回日期 1900-01-01 网络版发布日期  
DOI: cnki:ISSN:0583-1431.0.1957-04-001
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