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Non-Shannon Perspective on Channel Capacity for Binary Source Codes Using Weighted Conditional Entropy 使用加权条件熵的二进制源码信道容量的非香农视角
Pub Date : 2023-11-24 DOI: 10.9734/arjom/2023/v19i11762
Rohit Kumar Verma, Som Kumari
Discrete memory-free channels with a very low capacity are known as noisy channels. Our recent study has yielded some new insights into the channel capacity of noisy channels, which could prove useful in the development of mathematical models for these channels and other contexts.
容量极低的离散无记忆信道被称为噪声信道。我们最近的研究对噪声信道的信道容量有了一些新的认识,这些认识可能对这些信道和其他信道数学模型的开发很有帮助。
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引用次数: 0
Counting Spanning Trees in The Ladders 计算梯子中的生成树
Pub Date : 2023-11-22 DOI: 10.9734/arjom/2023/v19i11761
Gujun Wang, Min Xiao, Feng Zhu
Aims: In order to study the rule of entropy in different graph transformations, this paper introduces and further generalizes the ladder graph from different perspectives, including pinwheel ladders and 3-dimensional ladders. Then the problem of entropy comes down to the calculation of spanning trees in these graphs. Place and Duration of Study: School of Mathematical Sciences, Jiangsu University, between January 2023 and October 2023.  Methodology: A method by seeking similar terms was generalized to help study the essential principle in these graphs. By similarity diagonalization and computer aided calculation, the exact expressions for the number of spanning trees in these graphs are obtained.
目的:为了研究不同图变换中的熵的规律,本文从不同角度介绍并进一步概括了梯形图,包括风车梯形图和三维梯形图。然后,熵的问题归结为这些图中生成树的计算。学习地点和时间:江苏大学数学科学学院,2023 年 1 月至 2023 年 10 月。 研究方法:归纳了一种寻求相似项的方法,以帮助研究这些图中的基本原理。通过相似性对角化和计算机辅助计算,得到了这些图中生成树数的精确表达式。
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引用次数: 0
Classification of Ideals in Banach Spaces 巴拿赫空间中的理想分类
Pub Date : 2023-11-17 DOI: 10.9734/arjom/2023/v19i11760
Wanjala Patrick Makila, O. M. Onyango, S. A. Nyongesa
Let an operator T belong to an operator ideal J, then for any operators A and B which can be composed with T asBTA then BTA (in) J. Indeed, J contains the class of finite rank Banach Space operators. Now given L(X; Y ). Then J(X; Y ) (subseteq) L(X; Y ) such that J(X; Y ) = {T : X (gets) Y : T (subseteq) }. Thus an operator ideal is a subclass J of L containing every identity operator acting on a one-dimensional Banach space such that: S + T (in) J(X; Y ) where S; T (in) J(X; Y ). If W;Z;X; Y (in) K;A (in) L(W;X);B (in) L(Y;Z) then BTA (in) J(W;Z) whenever T (in) J(X; These properties compare very well with the algebraic notion of ideals in Banach Algebras within whose classes lie compact operators, weakly compact operators, finitely strictly regular operators, completely continuous operators, strictly singular operators among others. Thus, the aim of this paper is to characterize the various classes of ideals in Banach spaces. Special attention is given to the characteristics involving the ideal properties, the metric approximation properties, the hereditary properties in relation to the ideal extensions in the Hahn-Banach space, projection and embedments in the biduals of the Banach Space.
让一个算子 T 属于一个算子理想 J,那么对于任何可以与 T 组成 BTA 的算子 A 和 B,则 BTA (in)J。现在给定 L(X; Y ).那么 J(X; Y )(subseteq) L(X; Y ) 这样 J(X; Y ) = {T : X (gets) Y : T (subseteq) }。因此,一个算子理想是 L 的子类 J,它包含作用于一维巴拿赫空间的每一个同一算子,使得:S + T (in) J(X; Y ) 其中 S; T (in) J(X; Y ).如果 W;Z;X;Y (in) K;A (in) L(W;X);B (in) L(Y;Z),那么只要 T(in) J(X),BTA (in) J(W;Z);这些性质与巴拿赫代数中理想的代数概念非常相似,在巴拿赫代数的理想类中有紧凑算子、弱紧凑算子、有限严格正则算子、完全连续算子、严格奇异算子等等。因此,本文的目的是描述巴拿赫空间中各类理想的特征。本文特别关注涉及理想特性、度量逼近特性、与哈恩-巴拿赫空间中理想扩展相关的遗传特性、巴拿赫空间双元中的投影和嵌入等特性。
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引用次数: 0
Integer Solutions of the Diophantine Equation (left (1-frac{1}{mathit{x}}right)) (left (1-frac{1}{mathit{y}}right)) (left (1-frac{1}{mathit{z}}right)) = (frac{1}{mathit{l}}) 丢番图方程的整数解(left (1-frac{1}{mathit{x}}right))(left (1-frac{1}{mathit{y}}right))(left (1-frac{1}{mathit{z}}right)) = (frac{1}{mathit{l}})
Pub Date : 2023-11-07 DOI: 10.9734/arjom/2023/v19i11758
Qiang Wang, Qingwei Tu
In this paper, we mainly find all solutions of the diophantine equation (left (1-frac{1}{mathit{x}}right)) (left (1-frac{1}{mathit{y}}right)) (left (1-frac{1}{mathit{z}}right)) = (frac{1}{mathit{l}}) in integer variables ((mathit{x}), (mathit{y}), (mathit{z}), (mathit{l}) ).
本文主要寻找整数变量((mathit{x}), (mathit{y}), (mathit{z}), (mathit{l}))的丢番图方程(left (1-frac{1}{mathit{x}}right))(left (1-frac{1}{mathit{y}}right))(left (1-frac{1}{mathit{z}}right)) = (frac{1}{mathit{l}})的所有解。
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引用次数: 0
Fixed Point Results for Generalized Non-linear Operators with Convergence Analysis 广义非线性算子的不动点结果与收敛分析
Pub Date : 2023-10-31 DOI: 10.9734/arjom/2023/v19i11756
Ravi Parkash Bhokal, Manoj Kumar, Ashish Kumar
The purpose of this research article is to introduce a new iteration scheme and to prove J-iterationconvergence and stability results for it. We also claim the newly introduced iterative scheme has better efficiency than some of the existing iterations in the literature. Our claim is supported by numerical example.
本文的研究目的是引入一种新的迭代方案,并证明其j -迭代的收敛性和稳定性结果。我们还声称新引入的迭代方案比文献中现有的一些迭代方案具有更好的效率。我们的主张得到了数值实例的支持。
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引用次数: 0
Fixed Point Results on Interval-Valued Fuzzy Metric Space using notation of Pairwise Compatible Maps and Occasionally Weakly Compatible Maps with Application 区间值模糊度量空间上用成对相容映射和偶弱相容映射符号的不动点结果及其应用
Pub Date : 2023-10-31 DOI: 10.9734/arjom/2023/v19i11757
Vaishali Deshmukh, B. P. S. Jadon, Ruchi Singh, S. K. Malhotra
The purpose of the paper is to obtain common fixed point results on interval-valued fuzzy metric space for occasionally weakly compatible maps (OWC) using contractive conditions. With the concept of (tau)norm, interval numbers, and some important properties of interval-valued (tau)norm.
利用压缩条件得到偶弱相容映射(OWC)在区间值模糊度量空间上的公共不动点结果。介绍了(tau)范数的概念,区间数,以及区间值(tau)范数的一些重要性质。
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引用次数: 0
The Number of Spanning Trees of General Fan Graphs 一般扇形图生成树的个数
Pub Date : 2023-10-30 DOI: 10.9734/arjom/2023/v19i11755
Gao Zhinan, Lu Xingyan, Wei Yuxuan, Zhu Feng
As we all know, the number of spanning trees can be calculated by virtue of the famous Kirchhoff’s matrix-tree theorem. However, it doesn’t work when coming across complex graphs with thousands of edges and vertices or more. Hence, how to obtain accurate solutions of the number of spanning trees of general fan graphs becomes a subject to several studies of many places like computer science, physics and mathematics. In this paper, we focus on calculating different types of graphs generated by adding vertices and edges to the fan graph. Particularly, we define a new graph called "C-graph", which brings a unique angle of view for us to recognize the construction of original graphs. Moreover, we introduce a new iterative relation about the general fan graph, simplifying the calculation. Therefore, we can obtain functions of the number of spanning trees obtained from given fan graphs, which are also suitable for larger and more complex conditions. Finally, we discuss the effect of vertices and edges on the number of spanning trees, finding out that edges have greater impact. Additionally, by using Kirchhoff’s matrix-tree theorem, we verified the rationality of our results.
我们都知道,生成树的个数可以通过著名的基尔霍夫矩阵树定理来计算。然而,当遇到具有数千条边和顶点或更多的复杂图时,它就不起作用了。因此,如何获得一般扇形图生成树数目的精确解,成为计算机科学、物理和数学等多学科共同研究的课题。在本文中,我们着重于计算通过向扇形图添加顶点和边而生成的不同类型的图。特别地,我们定义了一个新的图,叫做“c图”,这为我们认识原始图的构造提供了一个独特的视角。此外,我们还引入了一种新的关于一般扇形图的迭代关系,简化了计算。因此,我们可以从给定的扇形图中得到生成树的个数的函数,这也适用于更大更复杂的条件。最后,我们讨论了顶点和边对生成树数量的影响,发现边的影响更大。此外,利用Kirchhoff矩阵树定理验证了结果的合理性。
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引用次数: 0
Berinde-Type Generalized (alpha) - (beta) - (psi) Contractive Mappings in Partial Metric Spaces and Some Related Fixed Points 部分度量空间中的广义berinded型(alpha) - (beta) - (psi)压缩映射及相关不动点
Pub Date : 2023-10-26 DOI: 10.9734/arjom/2023/v19i11754
Heeramani Tiwari, None Padmavati
Aims/ Objectives: The objective of this paper is to introduce the notion of generalized (alpha) - (beta) - (psi) contractive mappings involving rational expressions and establish existence and uniqueness of fixed points of Berinde type generalized (alpha) - (beta) - (psi) contractive mappings in the context of partial metric spaces. Additionally, we provide an example in support of our results.
目的/目标:本文的目的是引入包含有理表达式的广义(alpha) - (beta) - (psi)压缩映射的概念,并在偏度量空间中建立Berinde型广义(alpha) - (beta) - (psi)压缩映射不动点的存在唯一性。此外,我们还提供了一个示例来支持我们的结果。
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引用次数: 0
A Numerical Approximation of the Stochastic Ito-Volterra Integral Equation 随机Ito-Volterra积分方程的数值逼近
Pub Date : 2023-10-25 DOI: 10.9734/arjom/2023/v19i11753
Emmanuel Oladayo Oduselu–Hassan, Ignatius N. Njoseh, Jonathan Tsetimi
A stochastic differential equation (SDE) is a differential equation in which one or more of the terms and the solution are stochastic processes. Numerous studies have employed orthogonal polynomials, however most of them focus on deterministic rather than stochastic systems. This is the reason why in this study, we looked into a numerical solution for the stochastic Ito-Volterra integral equation using the explicit finite difference scheme and Bernstein polynomials as trial functions. The equidistant collocation procedure was used to calculate the unknown constant parameters in between and reach the desired approximation. The method was evaluated and contrasted with the Block Pulse method for approximate answers based on the aforementioned method, which were obtained and compared with others in the literature.
随机微分方程(SDE)是一种微分方程,其中一个或多个项及其解是随机过程。许多研究都使用了正交多项式,但大多数研究都集中在确定性系统而不是随机系统上。这就是为什么在本研究中,我们使用显式有限差分格式和Bernstein多项式作为试验函数来研究随机Ito-Volterra积分方程的数值解。采用等距配置法计算中间的未知常数参数,得到所需的近似。将该方法与基于上述方法的块脉冲方法进行了评估和对比,并与文献中其他方法进行了比较。
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引用次数: 0
Modelling of Earthquake b-and a-Values Using Least Squares and Maximum Likelihood Estimate Methods in Different Tectonic Regions of the World 用最小二乘和最大似然估计方法模拟世界不同构造区的地震b值和a值
Pub Date : 2023-10-25 DOI: 10.9734/arjom/2023/v19i11752
None Atsu, J. U.
Aims: This study modelled a- and b-values of earthquakes employing the least squares regression and maximum likelihood estimate methods. Methodology: Data used in the study were obtained from the International Seismological Centre (ISC), an earthquake catalogue of the United Kingdom. The time window was from 1st January 1988 to 31st December 2010 (30 years) with earthquake focal depth of 0-700km and magnitude Mb ≥ 1.3. Ten different locations were selected and a total of 149,965 events were used. The acquired data were processed and analysed using Microsoft Excel and the hypothesis was tested using independent t-test statistics with the aid of Statistical Software for Social Sciences (SPSS) version 23.0. Results: The findings of the study revealed that the b- and a-values calculated using the least squares regression method were higher than the ones obtained using the maximum likelihood estimate method. Also, the hypothesis revealed that there is a significant difference between the use of the least squares regression method and the maximum likelihood estimate method in the determination of b- and a-value of earthquakes in a given region. Conclusion: The maximum likelihood estimate gives a better estimate of b- and -a values than the least squares regression method.
目的:本研究采用最小二乘回归和最大似然估计方法对地震的a值和b值进行建模。方法:研究中使用的数据来自国际地震中心(ISC),一个英国的地震目录。时间窗为1988年1月1日至2010年12月31日(30年),震源深度0 ~ 700km,震级Mb≥1.3。选择了十个不同的地点,总共使用了149,965个活动。使用Microsoft Excel对所得数据进行处理和分析,并使用SPSS 23.0版本的独立t检验统计量对假设进行检验。结果:本研究发现,最小二乘回归法计算的b值和a值均高于极大似然估计法。此外,该假设表明,在确定给定地区地震的b值和a值时,使用最小二乘回归方法和最大似然估计方法之间存在显着差异。结论:与最小二乘回归法相比,最大似然估计法能更好地估计b值和a值。
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Asian Research Journal of Mathematics
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