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Modification of Homotopy Perturbation Algorithm Through Least SquareOptimizer for Higher Order Integro-Differential Equations 用最小二乘优化器修正高阶积分-微分方程同伦摄动算法
Pub Date : 2023-02-27 DOI: 10.52280/pujm.2023.550201
Mubashir Qayyum, Imbsat Oscar
In this manuscript, modification of homotopy perturbation method (HPM) is proposed for integro-differential equations by coupling the least square method (LSM) with HPM. Improved accuracy in a very few iterations is the general advantage of this technique. The proposed method is applied to different higher order integro-differential equationsof linear and nonlinear nature, and results are compared with exact as well as available solutions from the literature. Numerical and graphical analysis reveal that the proposed algorithm is reliable for integro-differential equations and hence can be utilized for more complex problems.
本文通过将最小二乘法与同伦摄动法耦合,提出了对整微分方程同伦摄动法的改进。在很少的迭代中提高精度是该技术的一般优点。将该方法应用于不同的线性和非线性高阶积分-微分方程,并将结果与文献中的精确解和可用解进行了比较。数值和图形分析表明,该算法对积分-微分方程是可靠的,因此可以用于更复杂的问题。
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引用次数: 1
Topological Descriptors and QSPR Models of Drugs used in Blood Cancer 血癌药物的拓扑描述符和QSPR模型
Pub Date : 2023-01-31 DOI: 10.52280/pujm.2023.550103
S. Parveen, Nadeem ul Hassan Awan, F. Farooq, Sajjad Hussain
In this article, we used M-polynomials to investigate the rela-tionships between topologicalindices and physicochemical properties of some blood cancer treatment drugs; we used the curvilinear regression method on drugs like azacitidine, buslfan, and mercaptopurine, among others. This article also includes M-polynomial proofs of the closed form of some topological indices of said drugs. The study could be a new at-tempt to improve QSPR model prediction analysis by utilizing the afore-mentioned molecular descriptors, which are used to investigate chemical, medical, and pharmacological properties. Finally, this work demonstrates that topological descriptors can be a cornerstone to designing and synthe-size new blood cancer treatments and other disease drugs.
本文利用m多项式研究了一些血癌治疗药物的拓扑指标与理化性质之间的关系;对阿扎胞苷、巴斯凡、巯基嘌呤等药物进行了曲线回归分析。本文还给出了这些药物的一些拓扑指标的闭形式的m -多项式证明。该研究可能是利用上述分子描述符改进QSPR模型预测分析的新尝试,这些分子描述符用于研究化学,医学和药理学性质。最后,这项工作表明,拓扑描述符可以成为设计和合成新的血癌治疗和其他疾病药物的基石。
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引用次数: 0
Analytical Method for Solving Inviscid Burger Equation 求解无粘汉堡方程的解析方法
Pub Date : 2023-01-30 DOI: 10.52280/pujm.2023.550102
Muhammad Amir, M. Awais, Asifa Ashraf, R. Ali
In this paper, we use the natural decomposition method (NDM) for solvinginviscid Burger equation (BE). The NDM is associated with the Adomain decompositionmethod (ADM) and the natural transform method. Applying the analytic method, wesolved successfully both lin-ear and non-linear partial differential equations. By applyingthe NDM, we compute the best approximation solution of linear and non-linear par-tialdifferential equations. In our experiments, we report comparisons with the exact solution.
本文采用自然分解法求解无粘Burger方程(BE)。NDM与域分解方法(ADM)和自然转换方法相关联。应用解析方法,成功地求解了线性偏微分方程和非线性偏微分方程。应用NDM,我们计算了线性和非线性偏微分方程的最佳逼近解。在我们的实验中,我们报告了与精确解的比较。
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引用次数: 2
Metric Based Fractional Dimension of Toeplitz Networks 基于度量的Toeplitz网络分数维
Pub Date : 2023-01-28 DOI: 10.52280/pujm.2023.550101
Hassan Zafar, M. Javaid
: Metric dimension is one of the distance based graph - theoretic parameters which is widely used in the various disciplines of sciences such as computer science, chemistry, and engineering. The local fractional metric dimension is latest derived form of metric dimension and it is used to find the solutions of integer programming problems. In this paper, we have computed local fractional metric dimension of different families ofToeplitz networks. It is also proved that the local fractional metric dimension of these Toeplitz networks remain bounded when the order of thenetworks approaches to infinity
度量维数是一种基于距离的图论参数,广泛应用于计算机科学、化学和工程等学科。局部分数阶度量维数是度量维数的最新派生形式,用于求整数规划问题的解。本文计算了toeplitz网络不同族的局部分数度量维数。并证明了当Toeplitz网络的阶数趋于无穷时,其局部分数度量维数保持有界
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引用次数: 1
Translation Hypersurfaces in Euclidean 4-Spaces 欧几里得4-空间中的平移超曲面
Pub Date : 2022-12-28 DOI: 10.52280//pujm.2022.541201
Ipek Akkilin, Salim Yuce
In this article, the translation hypersurfaces in Euclidean 4- space are defined as the sum of three curves with distinct parameters with unit speed, and non-planar. These curves are called the generator curves of the hypersurface. Utilizing the hypersurface theory in Euclidean 4-space, unit normal vector field, shape (Weingarten) operator matrix, fundamental forms, Gaussian curvature and mean curvature have been expressed for thetranslation hypersurfaces. Finally, the computational example is stated toefficiency of the theoretical results.
本文将欧几里得4空间中的平移超曲面定义为单位速度的三条参数不同的曲线的和,并且是非平面的。这些曲线被称为超曲面的生成曲线。利用欧几里得4空间中的超曲面理论,给出了平移超曲面的单位法向量场、形状(Weingarten)算子矩阵、基本形式、高斯曲率和平均曲率的表达式。最后,通过算例验证了理论结果的有效性。
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引用次数: 0
Classes of Ordinary Differential Equations of Length Biased Exponential Distribution and their Solutions 一类长度偏置指数分布的常微分方程及其解
Pub Date : 2022-12-28 DOI: 10.52280/pujm.2022.541202
Abdul Wahab, M. Z. Iqbal, Muhammad Zeshan Ali, Attia Hameed
The purpose of the work is to generate the ordinary differential equations and theirsolutions for the probability density function, quantile rate function, survival rate function, inverse survival rate function, haz-ard rate function and reversed hazard rate function of the Length Biased Exponential Distribution. The ordinary differential equations and their so-lutions are obtained using the Math of differentiation and integration as a tool together with their boundary conditions. The boundaries and para-meters that portrayed the distribution unavoidably decide the nature, presence, uniqueness, arrangement and the various possible solutions of these ordinary differential equations are better approaches to understand these characteristics. The work will be helpful to analyze the lifetime growth or risk and is of great significance in the field of ecological studies. The method can be very useful for the other probability distributions and can serve as a substitute for theapproximation study.
本文的工作目的是生成长度偏置指数分布的概率密度函数、分位数率函数、存活率函数、逆存活率函数、危险率函数和逆危险率函数的常微分方程及其解。利用微分与积分数学作为工具,结合其边界条件,得到了常微分方程及其解。描述分布的边界和参数不可避免地决定了这些常微分方程的性质、存在性、唯一性、排列和各种可能解,是理解这些特性的较好途径。这项工作将有助于分析其终生生长或风险,在生态学研究领域具有重要意义。该方法对其他概率分布也非常有用,可以作为近似研究的替代品。
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引用次数: 0
On the Structural Properties and Some Topological Indices of Young-Fibonacci Graphs 关于Young-Fibonacci图的结构性质和一些拓扑指标
Pub Date : 2022-12-28 DOI: 10.52280/pujm.2022.5412035
Iqra Zaman, FM Bhatti
In this paper, we study Young Fibonacci graphs Gn, a special family of graphsthat are constructed with the help of integer partitions. Young diagrams are also used inthe construction of graphs. The family of graphs is rich in structure. Thus, we investigatevarious properties of the family of graphs which include degree based structure andtopological in-dices. Topological indices like Zagreb Index, Wiener Index, Randic Indexand Connective Eccentricity Index of these graphs are computed. We also study theeigenvalues and energy of the graph.
在本文中,我们研究了Young Fibonacci图Gn,这是一种借助整数分割构造的特殊图族。Young图也用于构造图形。图族结构丰富。因此,我们研究了图族的各种性质,包括基于度的结构和拓扑索引。计算了这些图的Zagreb指数、Wiener指数、Randic指数和连接偏心率指数等拓扑指数。我们还研究了图的特征值和能量。
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引用次数: 0
An optimal eighth-order multipoint numerical iterative method to find simple root ofscalar nonlinear equations 求标量非线性方程单根的最优八阶多点数值迭代法
Pub Date : 2022-11-30 DOI: 10.52280/pujm.2022.541103
M. Z. Ullah
An optimal eighth-order multipoint numerical iterative method is constructed to find thesimple root of scalar nonlinear equations. It is a three-point numerical iterative method that uses three evaluations of func-tion f(¢) associated with a scalar nonlinear equation and one of its deriv-atives f0 (¢). The four functional evaluations are required to achieve the eighth-order convergence. According to Kung-Traub conjecture (KTC), an iterative numerical multipoint method without memory can achieve maximum order of convergence 2n¡1 where n is the total number of func-tion evaluations in a single instance of the method. Therefore, following the KTC, the proposed method in this article isoptimal.
构造了求标量非线性方程单根的最优八阶多点数值迭代方法。它是一种三点数值迭代法,使用与标量非线性方程及其导数之一f0(ⅱ)相关的函数f(ⅱ)的三次求值。这四个功能评价是实现八阶收敛所必需的。根据Kung-Traub猜想(KTC),无内存迭代数值多点方法的最大收敛阶数为2n±1,其中n为该方法在单个实例中函数求值的总次数。因此,遵循KTC,本文提出的方法是不优的。
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引用次数: 0
Mappings related to Hermite-Hadamard type inequalities for harmonically convexfunctions 调和凸函数与Hermite-Hadamard型不等式相关的映射
Pub Date : 2022-11-30 DOI: 10.52280/pujm.2022.541101
Muhammad Amer Latif
In this study, we define some mappings connected to the Hermite-Hadamard type inequalities constructed for harmonically convex mappings. We investigate some properties of these mappings and provide some refinement inequalities for the Hermite-Hadamard type inequalities that have already been established for harmonic convex functions.
在本研究中,我们定义了一些与调和凸映射构造的Hermite-Hadamard型不等式相连的映射。我们研究了这些映射的一些性质,并为调和凸函数已经建立的Hermite-Hadamard型不等式提供了一些改进不等式。
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引用次数: 3
Reproducing Kernel for Neumann Boundary Conditions Neumann边界条件下核的再现
Pub Date : 2022-11-30 DOI: 10.52280/pujm.2022.541102
Gautam Patel, Kaushal Patel
We investigate a kernel space which is a particular class of Hilbert space. We discuss various properties of the reproducing kernel. In particular, our aim to construct kernel in reproducing space of the specific function space (Sobolev space) with the inner product and norm. Also, we derive the reproducing kernel for Neumann boundary conditions.
我们研究了一个核空间,它是一类特殊的希尔伯特空间。我们讨论了再现核的各种性质。特别地,我们的目标是在具有内积和范数的特定函数空间(Sobolev空间)的再现空间中构造核。此外,我们还导出了诺伊曼边界条件下的再现核。
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引用次数: 0
期刊
Punjab University Journal of Mathematics
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