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姚卫红 《数学杂志》2001,21(4):463-467
关于亚纯函数的唯一性问题,为了时一步经Nevanlinna四值定理的条件。我们在考虑重值的基础上,采用H.Ueda的方法,改进了3CM 1IM=4CM的结果,是对G.G.Gunder-sen有关结论的推广。  相似文献   

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本文用凸分析基本方法给出Stewart待解问题一个肯定回答。使用下述记号.‖‖_2代表向量的2-范数或矩阵的谱范数;σ_(min)(C)表示矩阵C的最小奇异值,σ_(min)~+(C)代表矩阵C的最小非零奇异值;R(X)表示矩阵X的列空间;M表示集合M的闭包;λ_(min)(H)表示Hermite阵H的最小特征值。此外  相似文献   

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Ohne Zusammenfassung Vorgelegi von G. Alexits  相似文献   

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徐广善 《数学进展》1995,24(2):97-110
本文介绍了SiegelE.G函数值数论性的主要内容,进展和有关的问题。  相似文献   

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InG.M.@,asshowedinfigure1,alltheedgescanbedividedintothreetiers:innertierABCDEA,outertierA'B'C'D'E'A'andmiddletierAD'BE'CAIDBIEC'A(radiationedges).Bytwistingwepushthenegativeedgesininnertierand0utertierintothemiddletierasfaraspossible.IfDEisanegativeedge,wecantwistD,tomakeitbecameap0sitiveedgelifCDturnedint0thenegativeedge,wecantwistCt0makeitbecometheP0sitiveedge,ands00n.Atlast,ifABisanegativeedge,twistA,tomakeitbecomeaPOsitiveedge.Inthisway,excepttheedgeAEcouldbePOsitiveorne…  相似文献   

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<正> 一、理工科大学数学教学内容改革已提上议事日程 1989年8月18日,钱学森在中国数学会数学教育与科研座谈会上作了题为《发展我国的数学科学》的讲话。讲话全文登载在《数学进展》杂志1990年(第19卷)第二期上。钱学森说:  相似文献   

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TheHomeomorphismClassificationofG.M.(2k+l-venices)YuanFuyong(袁夫永)(UniversityofstaffandWorkersofAgricultureReclamation)Abstra...  相似文献   

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The aim of this paper is to study the relationship among Minty vector variationallike inequality problem, Stampacchia vector variational-like inequality problem and vector optimization problem involving(G, α)-invex functions. Furthermore, we establish equivalence among the solutions of weak formulations of Minty vector variational-like inequality problem,Stampacchia vector variational-like inequality problem and weak efficient solution of vector optimization problem under the assumption of(G, α)-invex functions. Examples are provided to elucidate our results.  相似文献   

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素环上的Jordan(α,α)-导子   总被引:5,自引:0,他引:5  
赵玉松 《大学数学》2004,20(6):47-49
证明了2-非挠素环上的Jordan(α,α)-导子是(α,α)-导子.  相似文献   

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Let K denote a locally compact commutative hypergroup, L 1(K) the hypergroup algebra, and α a real-valued hermitian character of K. We show that K is α-amenable if and only if L 1(K) is α-left amenable. We also consider the α-amenability of hypergroup joins and polynomial hypergroups in several variables as well as a single variable.  相似文献   

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《Discrete Mathematics》2022,345(5):112759
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For α∈N with α≥2, we define and characterize α-inflatable semigroups,S and establish that the product (βS/S,·)·(βS/S,·) of Stone-Ĉech remainders does not contain the closure of the minimal ideal of (βS,·), the Stone-Ĉech compactification ofS. From this result, one can easily derive Ruppert's result that the minimal ideal of a compact left-topological semigroup is not necessarily closed. The author gratefully acknowledges support from Delaware State College under Grant No. 6769.  相似文献   

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素环上的Jordan Triple(α,α)-导子   总被引:3,自引:0,他引:3  
证明了2-非挠素环上的Jordan trip le(,αα)-导子是(α,α)-导子.  相似文献   

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A generalization of the concept of a flock of a quadratic cone in PG(3,q), q even, where the base of the cone is replaced by a translation oval, was introduced in [4] and is the focus of this work. The related idea of a q-clan is also generalized and studied with a particular emphasis on the connections with hyperovals. Several examples are given leading to new proofs of the existence of known hyperovals, unifying much of what has been done in this area. Finally, a proof that the Cherowitzo hyperovals do form an infinite family is also included.  相似文献   

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α-对称环     
引入α-对称环的概念,讨论了它与其它相关环的关系,证明环R是α-对称环当且仅当R上的n×n上三角矩阵环T_n(R)是α-对称环;若R是α-对称环,则R[x]/(x~n)是α-对称环,其中(x~n)是由x~n生成的理想,n为任意正整数.  相似文献   

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