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A Detailed Proof of the Strong Goldbach Conjecture Based on Partitions of a New Formulation of a Set of Even Numbers 基于偶数集合新公式分区的强哥德巴赫猜想的详细证明
Pub Date : 2024-04-10 DOI: 10.9734/arjom/2024/v20i4793
Daniel Sankei, Loyford Njagi, Josephine Mutembei
The Strong Goldbach's conjecture, a fundamental problem in Number Theory, asserts that every even integer greater than 2 can be expressed as the sum of two prime numbers. Despite significant efforts over centuries, this conjecture remains unproven, challenging the core of mathematics. The known algorithms for attempting to prove or verify the conjecture on a given interval [a,b] consist of finding two sets of primes Pi and Pj such that Pi+Pj cover all the even numbers in the interval [a,b]. However, the traditional definition of an even number as 2n for n ∈ ℕ (where ℕ is the set of natural numbers), has not provided mathematicians with a straightforward method to obtain all Goldbach partitions for any even number of this form. This paper introduces a novel approach to the problem, utilizing all odd partitions of an even number of a new formulation of the form Eij = ni  + nj + (nj - ni)n or alln ∈ ℕ. By demonstrating that there exist at least a pair of prime numbers in these odd partitions, the fact that the sum of any two prime numbers is even and there exists infinitely many prime numbers, this paper provides a compelling proof of the conjecture. This breakthrough not only solves a long-standing mathematical mystery but also sheds light on the structure of prime numbers.
强哥德巴赫猜想是数论中的一个基本问题,它断言每个大于 2 的偶数整数都可以表示为两个素数之和。尽管经过几个世纪的努力,这一猜想仍未得到证实,对数学的核心提出了挑战。试图在给定区间 [a,b] 上证明或验证该猜想的已知算法包括找到两组素数 Pi 和 Pj,使得 Pi+Pj 涵盖区间 [a,b] 中的所有偶数。然而,对于 n∈ ℕ(其中 ℕ是自然数集),偶数的传统定义是 2n,这并没有为数学家提供一种直接的方法来求得这种形式的偶数的所有哥德巴赫分区。本文介绍了一种解决这一问题的新方法,即利用偶数的所有奇数分区的新形式 Eij = ni + nj + (nj - ni)n 或所有 n∈ ℕ。通过证明在这些奇数分区中至少存在一对素数、任意两个素数之和为偶数以及存在无穷多个素数的事实,本文为猜想提供了令人信服的证明。这一突破不仅解开了一个长期存在的数学谜团,而且揭示了素数的结构。
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引用次数: 0
Analysis of Norm-Attainability and Convergence Properties of Orthogonal Polynomials in Weighted Sobolev Spaces 加权索波列夫空间中正交多项式的规范可达性和收敛性分析
Pub Date : 2024-04-09 DOI: 10.9734/arjom/2024/v20i4792
Mogoi N. Evans, A. Wanjara, Samuel B. Apima
This paper explores norm-attainability of orthogonal polynomials in Sobolev spaces, investigating properties like existence, uniqueness, and convergence. It establishes the convergence of these polynomials in Sobolev spaces, addressing orthogonality preservation and derivative behaviors. Spectral properties, including Sturm-Liouville eigenvalue problems, are analyzed, enhancing the understanding of these polynomials. The study incorporates fundamental concepts like reproducing kernels, Riesz representations, and Bessel’s inequality. Results contribute to the theoretical understanding of orthogonal polynomials, with potential applications in diverse mathematical and computational contexts.
本文探讨了 Sobolev 空间中正交多项式的规范可得性,研究了存在性、唯一性和收敛性等性质。它确定了这些多项式在 Sobolev 空间中的收敛性,解决了正交性保持和导数行为问题。还分析了光谱特性,包括 Sturm-Liouville 特征值问题,加深了对这些多项式的理解。研究结合了再现核、Riesz 表示和贝塞尔不等式等基本概念。研究结果有助于从理论上理解正交多项式,并有可能应用于各种数学和计算领域。
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引用次数: 0
Solution of Laplace Equation by Modified Differential Transform Method 用修正微分变换法求解拉普拉斯方程
Pub Date : 2024-03-29 DOI: 10.9734/arjom/2024/v20i3790
R. S. M. Kularathna, N. Kajan, T. Jeyamugan, S. Thilaganathan
In this paper, we applied the modified two-dimensional differential transform method to solve Laplace equation. Laplace equation is one of Elliptic partial differential equations. These kinds of differential equations have specific applications models of physics and engineering. We consider four models with two Dirichlet and two Neumann boundary conditions. The simplicity of this method compared to other iteration methods is shown here. It is worth mentioning that here only a few number of iterations are required to reach the closed form solutions as series expansions of some known functions.
本文应用改进的二维微分变换法求解拉普拉斯方程。拉普拉斯方程是椭圆偏微分方程的一种。这类微分方程在物理学和工程学中有特殊的应用模型。我们考虑了带有两个 Dirichlet 和两个 Neumann 边界条件的四个模型。与其他迭代法相比,这种方法的简便性在此得到了体现。值得一提的是,在这里只需要少量的迭代就可以得到一些已知函数的数列展开的闭式解。
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引用次数: 0
Fixed Point Theorems for Kannan Interpolative, Riech Interpolative and Dass-Gupta Interpolative Rational type Contractions in A-Metric Spaces A 度量空间中 Kannan 互推、Riech 互推和 Dass-Gupta 互推有理类型收缩的定点定理
Pub Date : 2024-02-28 DOI: 10.9734/arjom/2024/v20i2782
Sheetal Yadav, Manoj Ughade, D. Singh, Manoj Kumar Shukla
((lambda), (alpha))- interpolative Kannan contraction, ((lambda), (alpha), (beta))- interpolative Kannan contraction, ((lambda), (alpha), (beta), (gamma))- interpolative Riech contraction and ((lambda), (alpha), (beta))- interpolative Dass-Gupta rational contraction are presented in this study. Furthermore, we prove a few fixed-point theorems for interpolative contractions in complete A-metric spaces. These theorems also extend and apply to an A-metric setting several interesting results from metric fixed-point theory.
((lambda),((α))) - 插值卡南收缩, ((lambda),(α),((β)) - 插值卡南收缩, ((lambda),(α),(β)、((gamma))-插值里奇收缩和((lambda), ((alpha), ((beta))-插值达斯-古普塔有理收缩在本研究中被提出。此外,我们还证明了完全 A 度量空间中内插收缩的几个定点定理。这些定理还将公设定点理论中几个有趣的结果扩展并应用到了 A 度量环境中。
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引用次数: 0
The Minimum Superior Dominating Energy of Graphs 图形的最小优势支配能
Pub Date : 2024-02-21 DOI: 10.9734/arjom/2024/v20i1781
Tejaskumar R., A. Ismayil
Kathiresan and Marimuthu were the pioneers of superior distance in graphs. The same authors put forth the concept of superior domination in 2008. Superior distance is the shortest walk between any two vertices including their respective neighbours. The minimum superior dominating energy  is defined by the sum of the eigenvalues and it is obtained from the minimum superior dominating  matrix . The minimum superior dominating energy for star and crown graphs are computed. Properties of eigenvalues of minimum superior dominating matrix for star, cocktail party, complete and crown graphs are discussed. Results related to upper and lower bounds of minimum superior dominating energy for star, cocktail party, complete and crown graphs are stated and proved.
Kathiresan 和 Marimuthu 是图形优势距离的先驱。这两位作者在 2008 年提出了优势支配的概念。优越距离是指任意两个顶点(包括它们各自的邻居)之间的最短路径。最小优势支配能量由特征值之和定义,它可以从最小优势支配矩阵中获得。我们计算了星形图和冠形图的最小优势支配能。讨论了星形图、鸡尾酒会图、完整图和皇冠图的最小优势支配矩阵特征值的性质。阐述并证明了星形图、鸡尾酒会图、完整图和冠状图的最小优势支配能的上下限相关结果。
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引用次数: 0
Modelling Mortality in Kenya 肯尼亚死亡率模型
Pub Date : 2024-01-23 DOI: 10.9734/arjom/2024/v20i1777
Jackson K. Njenga, I. C. Kipchirchir
This research work seeks to analysis the mortality trend experienced in Kenya over the sample period 1950 to 2021 using a multidimensional modeling framework. Life table functions, namely; life expectancy, survival function and age at death distribution are applied to depict mortality characteristics. Life expectancy and survival rate have significantly improved. There has been a shift in mortality status from a high mortality population, to an intermediate stage and mortality risk factors have increased across age. Mortality concentration curve and index within the Lorenz curve and Gini coefficient framework are used to analyze the lifespan inequality. Lifespan inequality is high with negligible improvements over time. Gompertz force of mortality is then estimated, which is statistically significant at 5% level. Deaths at exact age 25 is about 35 per ten thousand, with the rate death rate increasing by 6.09% per year starting from age 25. Under the assumptions of stable population, where the mortality and fertility functions are independent of time, Malthusian parameter is estimated which is less than zero for selected years. Kenya is a shrinking population and death rate decrease with increase in Malthusian parameter. Finally, to model long-term mortality rate forecast, Lee-Carter model is estimated. The model is statistically significant at 5% level explaining 78.4% of the variations. Expected life expectancy at a given age is projected to increase, with life expectancy at birth in 2030 and 2071 being 65.6 and 70.5 years respectively.
这项研究工作旨在利用多维建模框架,分析 1950 年至 2021 年样本期内肯尼亚的死亡率趋势。采用预期寿命、存活率和死亡年龄分布等生命表函数来描述死亡率特征。预期寿命和存活率有了显著提高。死亡率状况已从高死亡率人口转变为中间阶段,各年龄段的死亡风险因素都有所增加。洛伦兹曲线和基尼系数框架内的死亡率集中曲线和指数用于分析寿命不平等。随着时间的推移,寿命不平等程度很高,改善程度微乎其微。然后估算了死亡率的 Gompertz 力,在 5%的水平上具有统计意义。25 岁时的死亡率约为万分之 35,死亡率从 25 岁开始每年增长 6.09%。在人口稳定的假设下,死亡率和生育率函数与时间无关,马尔萨斯参数的估计值在选定年份小于零。肯尼亚人口不断减少,死亡率随着马尔萨斯参数的增加而下降。最后,为了建立长期死亡率预测模型,对 Lee-Carter 模型进行了估算。该模型在 5%的水平上具有统计意义,可解释 78.4%的变化。预计特定年龄段的预期寿命将增加,2030 年和 2071 年出生时的预期寿命分别为 65.6 岁和 70.5 岁。
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引用次数: 0
Oscillatory Solution of a Convolutional Volterra Integral Equation 卷积 Volterra 积分方程的振荡解法
Pub Date : 2023-12-28 DOI: 10.9734/arjom/2023/v19i12772
Henry Otoo, W. Obeng-Denteh, Lewis Brew
Oscillatory solutions play a pivotal role in understanding functional differential and integral equations, offering insights into the behaviour of these equations' solutions, and assisting in understanding their growth, stability, and convergence properties. This study establishes the oscillatory solution of a convolutional Volterra integral equation using mathematical proofs. Theorems for oscillatory solutions are proposed and proven based on well-defined assumptions, along with an illustrated example. The proofs presented herein reveal that the convolutional Volterra integral equation can exhibit oscillatory or non-oscillatory behavior, contingent upon the characteristics of the function within the integral.
振荡解在理解函数微分方程和积分方程方面起着举足轻重的作用,它提供了对这些方程的解的行为的洞察力,并有助于理解它们的增长、稳定性和收敛特性。本研究通过数学证明建立了卷积 Volterra 积分方程的振荡解。基于定义明确的假设,提出并证明了振荡解的定理,并举例说明。本文提出的证明揭示了卷积 Volterra 积分方程可以表现出振荡或非振荡行为,这取决于积分内函数的特性。
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引用次数: 0
Estimation of the Probability of Earthquakes Return Period in Zimbabwe Using Gumbel’s Extreme Value Theory Method 利用 Gumbel 的极值理论方法估算津巴布韦地震重现期的概率
Pub Date : 2023-12-28 DOI: 10.9734/arjom/2023/v19i12771
Atsu, J. U., Abong, A. A.
Using Gumbel's extreme value theory method, this study looked into the probability of the largest earthquakes for different return periods in Zimbabwe. The Advanced National Seismic System (ANSS), the Northern California Earthquake Data Centre website, and UC Berkeley in the United States provided the data used for this study. The natural earthquakes with Mb ≥ 4.0 that occurred in the study area between January 1, 1901 and December 31, 2001 (a period of 100 years) with a focal depth ranging from 0 to 700 km made up the selected data. The study area is between 150S - 220S and 250E -340E in coordinates. A total of 81 events were used in the investigation. According to the results, there is a 100% chance that earthquakes with a magnitude between 4.5 and 5.5 will occur during the time interval of approximately 1 to 14 years and a 9.5% chance that within the next 100 years, there will be an earthquake with a magnitude of Mb = 6.0 or higher. For magnitudes Mb = 6.0 and above, the return period is relatively long - roughly 50 – 701 years. This suggests that there is little chance that Zimbabwe will experience earthquakes larger than magnitude 6.0. Despite being low, it is impossible to forecast with certainty because earthquake forecasting and prediction is still a complex topic.
本研究使用 Gumbel 的极值理论方法,研究了津巴布韦不同重现期发生最大地震的概率。国家地震高级系统(ANSS)、北加州地震数据中心网站和美国加州大学伯克利分校为本研究提供了数据。所选数据包括 1901 年 1 月 1 日至 2001 年 12 月 31 日(100 年)期间在研究区域内发生的 Mb ≥ 4.0 的自然地震,震源深度为 0 至 700 千米。研究区域的坐标介于 150S - 220S 和 250E - 340E 之间。调查共使用了 81 个事件。结果显示,在大约 1 至 14 年的时间间隔内,发生震级介于 4.5 和 5.5 之间的地震的几率为 100%,而在未来 100 年内,发生 Mb = 6.0 或更高震级地震的几率为 9.5%。对于 Mb = 6.0 级及以上的地震,重现期相对较长,大约为 50 - 701 年。这表明津巴布韦发生 6.0 级以上地震的可能性很小。尽管概率较低,但由于地震预测和预报仍然是一个复杂的课题,因此不可能做出肯定的预测。
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引用次数: 0
Some Fixed Point Techniques using (psi)-contraction Mapping on the (mathit{C}^*)-algebra Valued Metric Space 使用 (mathit{C}^*)-algebra Valued Metric Space 上 (psi)-contraction Mapping 的一些定点技术
Pub Date : 2023-12-23 DOI: 10.9734/arjom/2023/v19i12769
Alshaimaa Awad, Saleh Omran
In this article, we introduced and focused our attention to some fixed point theorems using (psi)-contraction mapping on (mathit{C}^*)-algebra valued metric space. In particular, we established some Banach fixed point theorem as well as several extensions and generalizations of this theorem in (mathit{C}^*)-algebras valued metric spaces. Moreover, in order to illustrate the current results, some basic examples are presented and we gave an application on system linear operator equation by investigating the existence and uniqueness to the solution of this equation.
在这篇文章中,我们介绍并重点关注了在(mathit{C}^*)-代数值度量空间上使用(psi)-收缩映射的一些定点定理。特别是,我们建立了一些巴拿赫定点定理以及该定理在(mathit{C}^*)-代数值度量空间中的一些扩展和概括。此外,为了说明当前的结果,我们提出了一些基本的例子,并通过研究该方程解的存在性和唯一性给出了系统线性算子方程的应用。
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引用次数: 0
On Suborbits and Graphs Associated with Action of Alternating Groups on Cartesian Product of Two Sets 论交替群对两个集合的笛卡尔积的作用相关的子轨道和图形
Pub Date : 2023-11-28 DOI: 10.9734/arjom/2023/v19i11763
Stephen Kadedesya, L. Nyaga, J. Rimberia
In this paper, the suborbits and graphs associated with the action of direct product of two Alternating groups on the Cartesian product of two sets are studied. It is shown that the suborbits are self-paired and the associated graphs are undirected and regular with girth 3.
本文研究了两个交替群的直积对两个集合的笛卡尔积的作用相关的子轨道和图。结果表明,子轨道是自成对的,相关的图是无向的、规则的,周长为 3。
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引用次数: 0
期刊
Asian Research Journal of Mathematics
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