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Journal of Advances in Mathematics and Computer Science

Published by SCIENCEDOMAIN international · ISSN (electronic) 2456-9968

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1,763

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2026 articles

1,763

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10,533

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Articles (1763)

Characterization of Orthogonal Projectors

Achiles Nyongesa Simiyu, Alwanyi Kevin Shilaviga & Olege Fanuel · Journal of Advances in Mathematics and Computer Science · 2022

Let H be a Hilbert space and M be a closed linear subspace of H. Then by projection theorem H = M ⊕ M ⊥ . This theorem suggests that the result has something to do about a notion in Hilbert spaces which is analogous to and a generalization of the familiar idea of Orthogonal or pe...

Open access Research Article 10.9734/jamcs/2022/v37i330440

Unsteady MHD Flow of a Fluid past a Rotating Semi-infinite Plate with Inclined Magnetic Field

Samuel Macharia Karimi · Journal of Advances in Mathematics and Computer Science · 2022

This paper investigates unsteady two-dimensional MHD flow past a rotating semi-infinite plate with an inclined magnetic field with viscous dissipation, Ohmic and Joule heating. The fluid is assumed to be electrically conducting. The governing non-linear partial differential equat...

Open access Research Article 10.9734/jamcs/2022/v37i330439

Characterization of Compact Operators in Pre-Hilbert and Hilbert Spaces

Achiles Nyongesa Simiyu, Hillary Amonyela Isabu & Aldril Wekesa Wanambisi · Journal of Advances in Mathematics and Computer Science · 2022

The concept of a compact operator on a Hilbert space, H is an extension of the concept of a matrix acting on a finite-dimensional vector space. In Hilbert space, compact operators are precisely the closure of finite rank operators in the topology induced by the operator norm. In...

Open access Research Article 10.9734/jamcs/2022/v37i330438

Study on Two New Numbers and Polynomials Numbers and Polynomials Arising from the Fermionic p-adic Integral on \(\mathbb{Z}\)p

Hye Kyung Kim · Journal of Advances in Mathematics and Computer Science · 2022

p-adic analysis and their applications is used p-adic distributions, p-adic measure, p-adic integrals, p-adic L-function and other generalized functions. In addition, among the many ways to investigate and construct generating functions for special polynomials and numbers, one of...

Open access Research Article 10.9734/jamcs/2022/v37i230436

Equal and Odd of Generalized Euler Function for Successive Integers

Xia Linfeng & Shen Zhongyan · Journal of Advances in Mathematics and Computer Science · 2022

Euler function \(\varphi(n)\) and generalized Euler function \(\varphi_{e}(n)\) are two important functions in number theory. Using the idea of classified discussion and determination of prime types, we study the solutions of odd number of generalized Euler function equations  \(...

Open access Research Article 10.9734/jamcs/2022/v37i230435

PM2.5 Prediction of Innovation Priority Discrete Nonlinear Gray Model Based on Gray Wolf Optimization Algorithm

Zhang Lanxi & Liao Hongming · Journal of Advances in Mathematics and Computer Science · 2022

PM2.5 is one of the main factors of air pollution, so the prediction of PM2.5 is of great significance. For this reason, the innovation priority discrete nonlinear gray model based on gray wolf optimization algorithm is established, which is based on the innovation priority princ...

Open access Research Article 10.9734/jamcs/2022/v37i230434

Forecasting of Road Traffic Flow Based on Harris Hawk Optimization and XGBoost

Longfeng Zhang, Yiqi Yang, Yanqiao Deng & Hao Kang · Journal of Advances in Mathematics and Computer Science · 2022

With the development of society and economy, people's living standards are improving day by day. The number of private cars is increasing, and the problem of urban traffic congestion is becoming more and more serious. Short-term traffic flow prediction is crucial to assist intell...

Open access Research Article 10.9734/jamcs/2022/v37i230433

\(H_{\infty}\) PID Control for Discrete-time Network Control Systems with Redundant Channels under Dynamic Event-triggered Scheme

Sisi Lin, Mengzhuo Luo & Jinhua Jiang · Journal of Advances in Mathematics and Computer Science · 2022

This paper is concerned with the \(H_{\infty}\) proportional-integral-derivative (PID) control problem for a class of discrete-time networked control systems (NCSs). First, a dynamic event-triggered control (DETC) scheme has been introduced to save the constrained network bandwid...

Open access Research Article 10.9734/jamcs/2022/v37i230432

Steady Flow of Blood Plasma through a Non-deformed Artery

Monday Ekhator & Stephen Etebefia · Journal of Advances in Mathematics and Computer Science · 2022

In this paper, the variation of axial velocity of blood plasma with arterial radius has been studied in the laminar flow of blood plasma through a non-deformed artery. Since blood plasma is a Newtonian fluid, the Hagen-Poiseuille flow was used to study this variation. The Hagen-P...

Open access Research Article 10.9734/jamcs/2022/v37i130431