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MULTIPLE POSITIVE SOLUTIONS OF A SINGULAR (n-1,1) CONJUGATE BOUNDARY VALUE PROBLEM WITH DELAY 被引量:2
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作者 Weng Peixuan\ Tian YanlingDept. of Math.,South China Normal Univ.,Guangzhou 51 0 631 《Applied Mathematics(A Journal of Chinese Universities)》 SCIE CSCD 2000年第2期128-136,共9页
This paper discusses the singular ( n\|1,1 ) conjugate boundary value problem as follows by using a fixed point index theorem in cones[HL(2:1,Z;2,Z]u (n) (t)+a(t)f(u(w(t)))=0,(0<t<1), u(t)=φ(t),(-τ≤t&l... This paper discusses the singular ( n\|1,1 ) conjugate boundary value problem as follows by using a fixed point index theorem in cones[HL(2:1,Z;2,Z]u (n) (t)+a(t)f(u(w(t)))=0,(0<t<1), u(t)=φ(t),(-τ≤t<0), u (j) (0)=u(1)=0,(1≤j≤n-2).Effort is devoted to give some sufficient conditions for which the equation has at least two positive solutions.An example to illustrate the application of this theorem is given. [FQ(6*2。39,X-W] 展开更多
关键词 Conjugate boundary value problem functional differential equation multiple positive solution.Keywords:Conjugateboundaryvalueproblem functionaldifferentialequation multiplepositivesolu-tion.
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ON UNIQUENESS FOR ALGEBROID FUNCTIONS OF FINITE ORDER 被引量:1
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作者 张平原 扈培础 《Acta Mathematica Scientia》 SCIE CSCD 2015年第3期630-638,共9页
Guided by Lo.Yang's method, we concern the question that how algebroid func- tions are determined by their multiple values and deficient values and we prove an at most 3v-valued theorem for algebroid functions. The r... Guided by Lo.Yang's method, we concern the question that how algebroid func- tions are determined by their multiple values and deficient values and we prove an at most 3v-valued theorem for algebroid functions. The results are complemented by an example for completeness. 展开更多
关键词 Algebroid functions value distribution multiple values deficient values
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THE UNIQUENESS FOR ALGEBROID FUNCTIONS OF FINITE ORDER
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作者 谭洋 孔荫莹 《Acta Mathematica Scientia》 SCIE CSCD 2020年第4期981-990,共10页
In this article,we discuss,by Nevanlinna theory,the influence of multiple values and deficiencies on the uniqueness problem of algebroid functions.We get several uniqueness theorems of algebroid functions which includ... In this article,we discuss,by Nevanlinna theory,the influence of multiple values and deficiencies on the uniqueness problem of algebroid functions.We get several uniqueness theorems of algebroid functions which include an at most 3v-valued theorem.These results extend the existing achievements of some scholars. 展开更多
关键词 multiple values DEFICIENCIES order UNIQUENESS algebroid functions
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SEVERAL UNIQUENESS THEOREMS OF ALGEBROID FUNCTIONS ON ANNULI
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作者 谭洋 《Acta Mathematica Scientia》 SCIE CSCD 2016年第1期295-316,共22页
In this paper, we discuss the uniqueness problem of algebroid functions on annull, we get several uniqueness theorems of algebroid functions on annuli, which extend the Nevanlinna value distribution theory for algebro... In this paper, we discuss the uniqueness problem of algebroid functions on annull, we get several uniqueness theorems of algebroid functions on annuli, which extend the Nevanlinna value distribution theory for algebroid functions on annuli. 展开更多
关键词 the Nevanlinna theory multiple values the uniqueness of algebroid functionson annuli
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Some Normality Criteria for Families of Meromorphic Functions
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作者 Chen Jun-fan Cai Xiao-hua 《Communications in Mathematical Research》 CSCD 2018年第2期125-132,共8页
Let κ be a positive integer and F be a family of meromorphic functions in a domain D such that for each f ∈ F, all poles of f are of multiplicity at least 2,and all zeros of f are of multiplicity at least κ + 1. L... Let κ be a positive integer and F be a family of meromorphic functions in a domain D such that for each f ∈ F, all poles of f are of multiplicity at least 2,and all zeros of f are of multiplicity at least κ + 1. Let α and b be two distinct finite complex numbers. If for each f ∈ F, all zeros of f;-α are of multiplicity at least 2,and for each pair of functions f, g ∈ F, f;and g;share b in D, then F is normal in D. 展开更多
关键词 meromorphic function normal family multiple value shared value
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Renormalization of Multiple q-Zeta Values
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作者 Jianqiang ZHAO 《Acta Mathematica Sinica,English Series》 SCIE CSCD 2008年第10期1593-1616,共24页
In this paper, we shall define the renormalization of the multiple q-zeta values (MqZV) which are special values of multiple q-zeta functions ζq (s1,..., Sd) when the arguments are all positive integers or all no... In this paper, we shall define the renormalization of the multiple q-zeta values (MqZV) which are special values of multiple q-zeta functions ζq (s1,..., Sd) when the arguments are all positive integers or all non-positive integers. This generalizes the work of Guo and Zhang (Renormalization of Multiple Zeta Values, arxiv: math/0606076v3). We show that our renormalization process produces the same values if the MqZVs are well-defined originally and that these renormalizations of MqZV satisfy the q-stuffle relations if we use shifted-renormalizations for all divergent ζq(S1,..., sd) (i.e., s1 ≤ 1). Moreover, when q ↑ 1 our renormalizations agree with those of Guo and Zhang. 展开更多
关键词 RENORMALIZATION regularization multiple (q-)zeta values stuffle relations shifting principle tailored power series
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Water resources optimization and eco-environmental protection in Qaidam Basin
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作者 FANG Chuang-lin~1, BAO Chao~2 (1. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China 2. Dept. of Geography, Peking University, Beijing 100871, China) 《Journal of Geographical Sciences》 SCIE CSCD 2001年第2期231-238,共8页
In order to realize sustainable development of the arid area of Northwest China, rational water resources exploitation and optimization are primary prerequisites. Based on the essential principle of sustainable develo... In order to realize sustainable development of the arid area of Northwest China, rational water resources exploitation and optimization are primary prerequisites. Based on the essential principle of sustainable development, this paper puts forward a general idea on water resources optimization and eco-environmental protection in Qaidam Basin, and identifies the competitive multiple targets of water resources optimization. By some qualitative methods such as Input-output Model & AHP Model and some quantitative methods such as System Dynamics Model & Produce Function Model, some standard plans of water resources optimization come into being. According to the Multiple Targets Decision by the Closest Value Model, the best plan of water resources optimization, eco-environmental protection and sustainable development in Qaidam Basin is finally decided. 展开更多
关键词 water resources optimization multiple Targets Decision by the Closest Value Model eco-environmental protection Qaidam Basin
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TENSOR SUM AND DYNAMICAL SYSTEMS
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作者 D.SENTHILKUMAR P.CHANDRA KALA 《Acta Mathematica Scientia》 SCIE CSCD 2014年第6期1935-1946,共12页
In this paper we introduce the concept of tensor sum semigroups. Also we have given the examples of tensor sum operators which induce dynamical system on weighted locally convex function spaces.
关键词 tensor sum composition operators multiplication operator dynamical systems seminorm operator valued mapping
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