数学季刊杂志 省级期刊
Chinese Quarterly Journal of Mathematics
杂志简介：《数学季刊》杂志经新闻出版总署批准，自1986年创刊，国内刊号为41-1102/O1，是一本综合性较强的科学期刊。该刊是一份季刊，致力于发表科学领域的高质量原创研究成果、综述及快报。主要栏目：研究报告、文献综述、简报、专题研究。
杂志简介：《数学季刊》杂志经新闻出版总署批准，自1986年创刊，国内刊号为41-1102/O1，是一本综合性较强的科学期刊。该刊是一份季刊，致力于发表科学领域的高质量原创研究成果、综述及快报。主要栏目：研究报告、文献综述、简报、专题研究。
作者：龙兵; 张忠占 刊期：2019年第01期
In this paper, a statistical analysis method is proposed to research life characteristics of products based on the partially accelerated life test. We discuss the statistical analysis for constant-stress partially accelerated life tests with Lomax distribution based on interval censored samples. The EM algorithm is u...
作者：梁宏昌 刊期：2019年第01期
In this paper, we study the intersection multiplicity of algebraic curves at a point both in R~2 and in real projective plane P~2. We introduce the fold point of curves and provide conditions for the relations between the intersection multiplicity of curves at a point and the folds of the point.
作者：黄朝凌 刊期：2019年第01期
We study when exchange rings are von Neumann regular. An exchange ring R with primitive factors Artinian is von Neumann regular, if the Jacobson radical of any indecomposable homomorphic image of R is T-nilpotent, and if any indecomposable homomorphic image of R is semiprime. Every indecomposable semiprimitive factor...
作者：庄伟 刊期：2019年第01期
Let R(z) be an NCP map with buried components of degree d = degf ≥ 2 on the complex sphere ■, and HD denotes the Hausdorff dimension. In this paper we prove that if Rn→ R algebraically, and Rn and R topologically conjugate for all n >> 0, then Rn is an NCP map with buried components for all n >> 0, and for some C ...
作者：韩艳; 许绍元; 董延寿 刊期：2019年第01期
The purpose of this paper is to improve some famous theorems for contractive mapping from ρ(α + β) ∈ [0,1/s) to ρ(α + β) ∈ [0, 1) in ordered cone b-metric spaces over Banach algebras with coefficient s ≥ 1(ρ(x) is the spectral radius of the generalized Lipschitz constant x). Moreover, some similar improvements in ...
作者：陈丽娜; 谢炎涛 刊期：2019年第01期
I. Cahit calls a graph H-cordial if it is possible to label the edges with the numbers from the set{1,-1} in such a way that, for some k, at each vertex v the sum of the labels on the edges incident with v is either k or-k and the inequalities |v(k)-v(-k)| ≤ 1 and|e(1)-e(-1)| ≤ 1 are also satisfied. A graph G is ca...
作者：马芳芳; 李涵 刊期：2019年第01期
The growing use of vehicles with the development of China brings greater pressure on the existing road traffic network. Based on the domestic and international research experiences and the domestic congestion situations, this paper selected six indicators that affect the traffic conditions. As each single indicator c...
作者：贾玲 刊期：2019年第01期
In this paper we mainly reveal the rich cohomology theories for partial entwining structures.
作者：高建忠; 张太雷 刊期：2019年第01期
In this paper, an SEIRS epidemic model with pulse vaccination and two time delays is proposed. By using stroboscopic map and comparison principle, the disease-free periodic solution(DFPS for short) is obtained and the global asymptotic stability of the DFPS is proved. The sufficient conditions for the permanence of t...
作者：魏耿平 刊期：2019年第01期
This paper establishes several new Lyapunov-type inequalities for the system of nonlinear difference equations■,which extend/supplement and improve some related existing ones.
作者：李启宁 刊期：2019年第01期
The aim of this article is to summarize the relationship between double Ore extensions and iterated Ore extensions, and mainly describe the lifting of properties from an algebra A to a(right) double Ore extension B of A which can not be presented as iterated Ore extensions.
刊期：2019年第01期
一、办刊宗旨:《数学季刊》由著名数学家陈景润先生于1986年创刊,创刊为中文版,现为英文版。是我国数学界委托河南大学承办,以刊登数学学科中具有创造性、代表学科水平的科研成果为主的综合性学术刊物。二、来稿要求:1.来稿正文用英文规范书写,要求语法正确,表达方式规范.
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