Volume 8, Number 5 (2023)
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Home > Journals > SCIREA Journal of Mathematics > Archive

SCIREA Journal of Mathematics — Open Access Journal

SCIREA Journal of Mathematics is an international, scientific peer-reviewed open access journal published online by SCIREA.

Open Access free for readers, with article processing charges (APC) paid by authors or their institutions.

High visibility: Indexed in the Google Scholar and other databases.

Rapid publication: manuscripts are peer-reviewed and a first decision provided to authors approximately 20 days after submission; acceptance to publication is undertaken in 5 days.

Recognition of reviewers: reviewers who provide timely, thorough peer-review reports receive vouchers entitling them to a discount on the APC of their next publication in any SCIREA journal, in appreciation of the work done.


Volume 8, Issue 5, October 2023

Open Access
Vimbiso Shiri, Xianyi Li
Abstract: This work mainly investigates the bifurcation problems and topological classifications of a discrete phytoplankton-zooplankton model, whose continuous version was proposed by Truscott and Brindley in 1994. The model is derived by using the semi-discretization technique. Within this study, trivial and semi-trivial fixed poi [...] Read more.
Abstract   ReferencesPDF (1929 K)   October 30, 2023    34 Downloads   360 Views   DOI: 10.54647/mathematics110427
Open Access
Guojun Fang, Zhiqing Fu
Abstract: In the calculus class, some students were confused by the expression of Inverse Function in two forms, which causes difficulties in understanding how to calculate the derivative of Inverse Function. It was because they were taught to denote independent variable only by using x in high school. In order to help them understan [...] Read more.
Abstract   ReferencesPDF (1183 K)   November 27, 2023    9 Downloads   130 Views   DOI: 10.54647/mathematics110437

Volume 8, Issue 4, August 2023

Open Access
Nikolaos Manikaros, Evgenios Avgerinos, Roza Vlachou
Abstract: In this work and in the context of the preparation of the Doctoral Dissertation on the subject "Study of Mathematical Modeling for Creation and Mining of Knowledge with the aim of producing new Evaluation Models - Certification of Resource Management Criteria with the help of IT, conducting a Comparative Study and Applicati [...] Read more.
Abstract   ReferencesPDF (1616 K)   September 18, 2023    24 Downloads   346 Views   DOI: 10.54647/mathematics110425
Open Access
El Hadji SOW, Moussa FALL, Oumar SALL
Abstract: We give the set of algebraic points of degree ≤5 over Q on the hyperelliptic curveC: y²=6x(x^4+3). This result extends a previous result of Bruin of who described in [1] the set of Q-rational points on this curve. [...] Read more.
Abstract   ReferencesPDF (1195 K)   September 18, 2023    39 Downloads   392 Views   DOI: 10.54647/mathematics110421

Volume 8, Issue 3, June 2023

Open Access
Long Wei, Xiaojun Zhang
Abstract: Syllogistic reasoning plays a crucial part in natural language information processing. For the purpose of providing a consistent interpretation for Aristotelian modal syllogistic, this paper firstly proves the validity of the syllogism EI◇O-2, and then takes it as the basic axiom to derive the other 38 valid modal syllogism [...] Read more.
Abstract   ReferencesPDF (234 K)   June 11, 2023    40 Downloads   443 Views   DOI: 10.54647/mathematics110402
Open Access
Abstract: We pose various congruences on the integers of form 6^n\ +\ 1, n\ \in\ Z_+, which may encourage younger number theorists to do research in number theory and settle new dimensions in this field. We saw that there are only three prime numbers, namely 7,\ 37, and 1297 of form 6^n\ +\ 1, whenever n\ \in\ Z_+-{{2}^km,\ k\geq6,\ [...] Read more.
Abstract   ReferencesPDF (1134 K)   June 11, 2023    46 Downloads   541 Views   DOI: 10.54647/mathematics110403

Volume 8, Issue 2, April 2023

Open Access
Sisti Nadia Amalia, Zul Amry
Abstract: Air transportation is the most appropriate option for extremely vast distances, such as those between cities, provinces, and countries. While unpredictability, high volatility, and seasonality sometimes result in complex behavior in air passenger time series, this research applies the Singular Spectrum Analysis technique fo [...] Read more.
Abstract   ReferencesPDF (1356 K)   May 4, 2023    54 Downloads   409 Views   DOI: 10.54647/mathematics110393
Open Access
Saofee Busaman
Abstract: In this paper, we define the set (CF_(T_n,(n))(X_n))^{A^s} of all n-ary C-formulas on the partial algebraic system A^s=(A;(f^A_i)_i in I,r^A) of type (T_n,(n)) and define the operation R^{n,A} on the set( (W^C_{T_n}(X_n))^{A^s}U(CF_(T_n,(n))(X_n))^{A^s}. After this definition we have a unitary Menger algebra ( ( (W [...] Read more.
Abstract   ReferencesPDF (3890 K)   May 31, 2023    43 Downloads   451 Views   DOI: 10.54647/mathematics110401

Volume 8, Issue 1, February 2023

Open Access
Xing Zhu, Chuanze Niu
Abstract: The formula of the $p$-adic valuation of the sequence $C_n(l)=\prod_{k=1}^{n}\prod_{j=0}^{l}(2k+2j-1)$ is studied. It is proved that $C_n(l)$ is not a square if $l$ is even and $n\ge \max\{2l,\frac{3l+19}{5}\}$. It is proved also that there are many squares in the sequences $C_n(1)$ and $C_n(3)$, while there are no squares [...] Read more.
Abstract   ReferencesPDF (255 K)   January 25, 2023    52 Downloads   620 Views   DOI: 10.54647/mathematics110379
Open Access
Christer Oscar Kiselman
Abstract: This essay describes orbits of particles passing near the sun, first according to Newton’s celestial mechanics and then according to Einstein’s general theory of relativity. Attempts to verify the latter by observing the deflection of light during total solar eclipses are mentioned. Confirmation also comes from mea- sureme [...] Read more.
Abstract   ReferencesPDF (11639 K)   February 9, 2023    40 Downloads   505 Views   DOI: 10.54647/mathematics110381
Open Access
Xuanci Wang, Wei Yi, Bin Zhang
Abstract: The covariance matrix, employed for measuring the linear correlation between variables, plays a vital role in data analysis, such as statistical prediction and hypothesis testing. When the data dimension is high, the traditional sample covariance matrix is not an ideal estimator of the population covariance matrix anymore, [...] Read more.
Abstract   ReferencesPDF (452 K)   February 9, 2023    49 Downloads   692 Views   DOI: 10.54647/mathematics110384

Volume 7, Issue 6, December 2022

Open Access
Abstract: This work is inspired by our recent work of giving a counterexample to the classical complex analysis (SCIREA Journal of Math. (6)4(2019), pp. 189-193). [...] Read more.
Abstract   ReferencesPDF (277 K)   November 13, 2022    36 Downloads   635 Views   DOI: 10.54647/mathematics11186
Open Access
Hong-Quan LIU
Abstract: The famous Stirling’s formula is generalized and improved, by using the arguments of analytic number theory and mathematical analysis. [...] Read more.
Abstract   ReferencesPDF (741 K)   December 4, 2022    44 Downloads   539 Views   DOI: 10.54647/mathematics11183
Open Access
Jinrong Shen
Abstract: In this paper, the minimal norm least squares solution of matrix equations (AXC,BXD,AXD,BXC)=(E,F,G,H) is discussed, by using the projection theorem, the generalized singular value decomposition and the canonical correlation decomposition, the expression of the solution of this problem is obtained. [...] Read more.
Abstract   ReferencesPDF (210 K)   December 11, 2022    33 Downloads   479 Views   DOI: 10.54647/mathematics11371
Open Access
Abstract: Counterexamples are given to residue theorem of complex analysis. The functional equation of Riemann zeta-function is invalid. [...] Read more.
Abstract   ReferencesPDF (1201 K)   December 11, 2022    44 Downloads   760 Views   DOI: 10.54647/mathematics11372

Volume 7, Issue 5, October 2022

Open Access
A.E. Umnov, E.A. Umnov
Abstract: The article considers a method for solving a nonlinear programming problem. This method uses special feedback functions that describe the relationship between direct variables and Lagrange multipliers. These relations are similar to the conditions of the Karush-Kuhn-Tucker theorem, but do not use inequalities in their notat [...] Read more.
Abstract   ReferencesPDF (357 K)   September 12, 2022    58 Downloads   1035 Views   DOI: 10.54647/mathematics11348

Volume 7, Issue 4, August 2022

Open Access
Zul Amry, Sisti Nadia Amalia
Abstract: This paper discusses the minimax estimator of parameter for binomial distribution. The likelihood function is constructed based on the probability function of the Binomial distribution. The posterior distribution is obtained from the joint of the likelihood function and prior distribution. Furthermore, the Bayes estimato [...] Read more.
Abstract   ReferencesPDF (1188 K)   July 31, 2022    58 Downloads   799 Views   DOI: 10.54647/mathematics11340

Volume 7, Issue 3, June 2022

Open Access
Blumenfeld Maty Rol
Abstract: The author has published recently (2021) a book having the title [1] Numerical Method to select an Analytical Polynomial Solution for Linear or Nonlinear Elliptic Partial Differential Equations of second order
The book can be freely downloaded from the blumenfeld.ro website. It was written during the isolation p [...] Read more.
Abstract   ReferencesPDF (724 K)   July 12, 2022    29 Downloads   725 Views   DOI: 10.54647/mathematics11327

Volume 7, Issue 2, April 2022

Open Access
Ping Guo
Abstract: In the modern big data environment, Stochastic gradient descent is an important method for training neural networks, processing largescale data sets, optimization, etc. Deeply welcomed in various fields. With regard to SGD, the existing literature considers the stopping condition of parameter iteration. In fact, some unimp [...] Read more.
Abstract   ReferencesPDF (257 K)   May 18, 2022    40 Downloads   846 Views   DOI: 10.54647/mathematics11319

Volume 7, Issue 1, February 2022

Open Access
Satyavarapu Naga Parameswara Gupta
Abstract: This is a fundamental result. What is the basic nature the intermolecular attraction forces? These questions were not thought off earlier. All the earlier conclusions were oriented towards finding the value of inter molecular attraction forces. We took the nature of these forces to be Newtonian Gravitation attraction forces [...] Read more.
Abstract   ReferencesPDF (2437 K)   January 20, 2022    48 Downloads   1295 Views   DOI: 10.54647/mathematics11304
Open Access
Magdalena Jankowska, L ukasz Matysiak
Abstract: In this paper we consider the structure of Dedekind in some developed cryptosystems. In one case, the structure exists with respect to a key, and in the other case, the structure exists with respect to two alphabets. The second part of this paper is an appendix that considers the applications of polynomial composites and mo [...] Read more.
Abstract   ReferencesPDF (271 K)   February 12, 2022    39 Downloads   921 Views   DOI: 10.54647/mathematics11310

Volume 6, Issue 6, December 2021

Open Access
Nadia Khan, Fatima Ramazan, Munazza Shamas
Abstract: Let G_n^6 represents the class connected 6-cyclic graphs. In this paper, first some result isderived for the characterization of class connected 6-cyclic graphs. Then we find minimum degree distance of class of connected of 6-cyclic graph. [...] Read more.
Abstract   ReferencesPDF (477 K)   November 15, 2021    46 Downloads   1111 Views   DOI: 10.54647/mathematics11289
Open Access
EL Hadji SOW, Moussa FALL, Oumar SALL
Abstract: In this work, we determine the set of algebraic points of degree at most Q over on the curve C given by the affine equation y^{2}= 4x^{5}+1. This result extends a result of Andrew R. Booker, Jeroen Sijsling, Andrew V. Sutherland, John Voight and Dan Yasak who described in [1] the set of rational points on this curve [...] Read more.
Abstract   ReferencesPDF (386 K)   December 9, 2021    30 Downloads   1105 Views   DOI: 10.54647/mathematics11300
Open Access
PARDI AFFANDI, M.Mahfudz S, Oscar A.B, A. Rahim
Abstract: Dengue Hemorrhagic Fever (DHF) is a disease caused by an arbovirus that enters the human body through the Aedes aegypti or Aedes albopictus mosquito. Dengue Hemorrhagic Fever (DHF) is characterized by symptoms of dengue fever; headache; reddish skin that looks like measles; and muscle and joint pain. In some patients, dengu [...] Read more.
Abstract   ReferencesPDF (377 K)   December 13, 2021    49 Downloads   1097 Views   DOI: 10.54647/mathematics11303
Open Access
Baiyu Wang, Wei Liu
Abstract: For the past few years, the meshless method has played a great advantage in solving partial differential equations. In this paper, a local meshless method based on moving least square and local radial basis functions is used to solve the inverse problem of heat conduction equation. The inverse problem is determination of a [...] Read more.
Abstract   ReferencesPDF (798 K)   December 28, 2021    23 Downloads   1108 Views   DOI: 10.54647/mathematics11265

Volume 6, Issue 5, October 2021

Open Access
Cuicui Li, Fang Liu
Abstract: In this paper, we establish the comparison principles via the perturbation method for the equation in , where is a highly degenerate and h- homogeneous operator associ [...] Read more.
Abstract   ReferencesPDF (395 K)   November 9, 2021    37 Downloads   1073 Views   DOI: 10.54647/mathematics11292

Volume 6, Issue 4, August 2021

Open Access
Zul Amry
Abstract: This paper presents a Bayesian analysis of the parameters for the inverse Gaussian distribution under the Jeffrey’s prior assuming a quadratic loss function. Analysis begins with the parameterization to the parameters in the distribution, then construct the posterior distribution based the likelihood function and prior, w [...] Read more.
Abstract   ReferencesPDF (245 K)   October 24, 2021    68 Downloads   893 Views   DOI: 10.54647/mathematics11287

Volume 6, Issue 3, June 2021

Open Access
Weicheng Xu, Zhendong Zhang, Xiaoyi Feng
Abstract: This study was devoted to extend Cav(u) theorem for repeated games with one-sided incomplete information. The model considered in this paper was based on the typical Aumann-Maschler model. According to the properties of Wasserstein distance, the Cav(u) theorem for repeated games with one-sided incomplete information was gen [...] Read more.
Abstract   ReferencesPDF (318 K)   July 28, 2021    40 Downloads   1184 Views   DOI: 10.54647/mathematics11275

Volume 6, Issue 2, April 2021

Open Access
Jiachen Lv, Yuqiang Feng
Abstract: B-Banach space is an extension of Banach space, which provides a suitable framework for studying many analytical problems. The uniform boundedness theorem is is the basic theorem in functional analysis and has many important applications in many field, such as matrix analysis, operator theory, and numerical analysis. In this [...] Read more.
Abstract   ReferencesPDF (192 K)   May 17, 2021    53 Downloads   1099 Views   DOI: 10.54647/mathematics11256

Volume 6, Issue 1, February 2021

Open Access
Rusudan Bitsadze
Abstract: For the well-known nonlinear oscillation equation, we consider a nonlinear mixed characteristic problem, which is a nonlinear analogue of the Darboux problem and consists in the simultaneous definition of a solution and its regular propagation domain. The question of solvability of the formulated problem is solved by the me [...] Read more.
Abstract   ReferencesPDF (221 K)   March 8, 2021    133 Downloads   1258 Views   DOI: 10.54647/mathematics11242
Open Access
Eduardo Martinez Escobedo
Abstract: Geneva mechanisms have been used to obtain an output intermittent circular motion by the means of a continuous circular motion. It offers the option of having a rest time with between motions in the output link. This paper is intended to provide the geometric resolution of this mechanisms via number of steps and diameter of [...] Read more.
Abstract   ReferencesPDF (644 K)   March 8, 2021    136 Downloads   1364 Views   DOI: 10.54647/mathematics11243

Volume 5, Issue 5, October 2020

Open Access
Ferenc Juhász
Abstract: A block random model, studied earlier in economics is introduced for biological sciences. Two approaches which handle participants as species and participants as individuals give pictures on processes from different points of view. In ecology it can provide an opportunity for some intervention to avoid development of danger [...] Read more.
Abstract   ReferencesPDF (299 K)   December 27, 2020    150 Downloads   1846 Views   

Volume 5, Issue 4, August 2020

Open Access
Sarah Haqi Abdulwahid, Alaa. M. F. AL. Jumaili
Abstract: The purpose of the present paper is to consider new classes of generalized compact spaces called Еc-(resp. δ-ßc)-compact spaces via Еc-(resp. δ-ßc)-open sets respectively. Several characterizations and fundamental properties concerning of these forms of spaces are obtained. Moreover, some new types of separation axioms in t [...] Read more.
Abstract   ReferencesPDF (864 K)   September 25, 2020    155 Downloads   1390 Views   

Volume 5, Issue 3, June 2020

Open Access
Alicia C. Sánchez
Abstract: The RAFU functions have been studied in [1, 2, 3, 4, 5 and 6]. They are useful in Approximation Theory to approach continuous functions and to reconstruct continuous functions. In this work we will use the RAFU functions to turn a discontinuous function into a continuous function. We will show the explicit expression of a s [...] Read more.
Abstract   ReferencesPDF (824 K)   September 25, 2020    159 Downloads   1379 Views   

Volume 5, Issue 2, April 2020

Open Access
S. M. Alata, O. T. Wahab, I. F. Usamot
Abstract: Common fixed point, generalized (ψ,φ) weak contraction, complete metric spaces [...] Read more.
Abstract   ReferencesPDF (390 K)   May 10, 2020    137 Downloads   1726 Views   
Open Access
Junjian Liu
Abstract: Abstract: The order of addition experiment is increasingly used in many scientific fields, such as chemistry,biology and medicine. The existing literature considers order of addition rather than amount combination. In this paper, we consider order of addition experiments with amount effects. A new proposed model incorporate [...] Read more.
Abstract   ReferencesPDF (280 K)   June 19, 2020    133 Downloads   1645 Views   

Volume 5, Issue 1, February 2020

Open Access
Zhu Rong Rong
Abstract: Background The twin prime conjecture is considered as a classic puzzle in the history of number theory and one of the most famous conjectures, which has always puzzled us. At the International Congress of Mathematicians in 1900, mathematician David Hilbert presented 23 important mathematical problems and conjectures [...] Read more.
Abstract   ReferencesPDF (473 K)   February 10, 2020    162 Downloads   2600 Views   

Volume 4, Issue 6, December 2019

Open Access
Hamza ZEMRANE, Youssef BADDI, Abderrahim HASBI
Abstract: The development of Smart Cities that know our word today depends on the development of the IoT, in this context IoT are applied to develop and optimize may current and future sectors of activities like: health care, home automation, transportation, public services and others. The major issues of safety and comfort in trad [...] Read more.
Abstract   ReferencesPDF (1269 K)   December 19, 2019    178 Downloads   1814 Views   
Open Access
H.-Q. Liu
Abstract: A counterexample is given in Complex analysis. [...] Read more.
Abstract   ReferencesPDF (358 K)   December 22, 2019    168 Downloads   2051 Views   

Volume 4, Issue 5, October 2019

Open Access
Ahmed N. K. Alfarra, Hui Xiaofeng, Ehsan Chitsaz, Jaleel Ahmed
Abstract: In this paper, we investigate the countercyclical buffer addressed in the Basel III framework. The ‘countercyclical buffer ‘targets at the extenuation of the supposedly harmful behavior of bank capital. The size of the buffer after the stepwise growths during the application stage finally reaches 2.5%. Therefore, the presen [...] Read more.
Abstract   ReferencesPDF (235 K)   August 19, 2019    200 Downloads   2465 Views   
Open Access
Abstract: A Pell Fermat equation and its two classes of solutions are discussed. We give a formula for the pairs of positive solutions, written with the Pell numbers, and some new identities involving these numbers. We build an invariant modulo 4 for each class of solutions. [...] Read more.
Abstract   ReferencesPDF (312 K)   November 4, 2019    161 Downloads   2542 Views   
Open Access
Bohdan Chapaliuk, Yuriy Zaychenko
Abstract: Lung cancer is one of the most aggressive types of cancer, and the possibility to detect it at an early stage can save a lot of patient lives worldwide. Building an automated lung cancer detection system can help to speed up the process of cancer detection and save human lives. This article considers three different approac [...] Read more.
Abstract   ReferencesPDF (459 K)   November 7, 2019    154 Downloads   2500 Views   

Volume 4, Issue 4, August 2019

Open Access
Fang-Ming Hsu, Chien-Ho Liao, Qian-Feng Liu
Abstract: Earning profit is always the paramount issue for investors. Many factors have been proved to affect stock returns, although information uncertainty is rarely discussed. This study examines how the effect of investors’ sentiments on stock returns and trading volumes is moderated by information uncertainty. Text mining techno [...] Read more.
Abstract   ReferencesPDF (421 K)   July 15, 2019    240 Downloads   2458 Views   
Open Access
D.G. Zaccari, C.J. AlturriaLanzardo, J.E. Pérez, J.C. Cesco
Abstract: In this paper, we present two new approximants for the Error Function. The starting point for obtaining them, is to use two alternative integral representations involving improper integrals. Both integrands include the function. Therefore, by replacing by its truncated Taylor's expansion, we obtain a rational approximan [...] Read more.
Abstract   ReferencesPDF (310 K)   August 5, 2019    236 Downloads   2321 Views   

Volume 4, Issue 3, June 2019

Open Access
Anika Ferdous, Tania S. Khaleque
Abstract: The present study considered the thermal convection of ferrofluids along a flat plate subject to uniform heat flux and slip velocity in the presence of radiation with a magnetic field applied in the transverse direction. Two different types of ferrofluids are considered: one magnetic nanoparticle (Fe_3 O_4) and one non-magn [...] Read more.
Abstract   ReferencesPDF (985 K)   June 4, 2019    285 Downloads   2897 Views   

Volume 4, Issue 2, April 2019

Open Access
Xiaoyang Zheng, Yuling Zeng, Qiulin Huang, Chengyou Luo, Wei wang
Abstract: The Crank-Nicolson and upwind difference schemes are used to solve the one dimensional convection-diffusion equation. Then the numerical solutions obtained and the exact solution are implemented to estimate the parameters, i.e. the convection and diffusion coefficients in this type equation by the least squares method. The [...] Read more.
Abstract   ReferencesPDF (1442 K)   April 26, 2019    338 Downloads   2701 Views   
Open Access
Shinemin Lin, Lewis Hall
Abstract: On April 12, 2018 Dr. Ana-Maria Croica gave a presentation as NSF-Target Infusion Program Seminar Series. Her topic is “An Optimal Control Model to Reduce and Eradicate Anthrax Disease in Herbivorous Animals. This research is based on Saad-Roy’s Mathematical Model of Anthrax Transmission in Animal Population. I was impre [...] Read more.
Abstract   ReferencesPDF (1779 K)   May 27, 2019    283 Downloads   2860 Views   

Volume 4, Issue 1, February 2019

Open Access
Peter Kopanov, Miroslav Marinov, Atakan Salimov
Abstract: In this paper we consider cases of the existence of the moments of functions of random variables supported on a bounded interval. Our attention is restricted to the tan function, as a generalization of the Cauchy distribution which is infact the result of applying this function to a uniformly distributed variable. [...] Read more.
Abstract   ReferencesPDF (207 K)   March 23, 2019    315 Downloads   3176 Views   
Open Access
Guanghai Tang, Ruili Chu
Abstract: To find out the impact of Internet on Residents’ Consumption Structure and Regional Differences, panel data analysis and experimental study were used to analyze China’s provincial panel data from 2003 to 2016. The results show that from the overall level of the country, the Internet development plays a significant role in p [...] Read more.
Abstract   ReferencesPDF (324 K)   April 9, 2019    232 Downloads   3308 Views   

Volume 3, Issue 3, June 2018

Open Access
WOLF Marc, WOLF François
Abstract: We study the composite odd numbers via their indices with a function ranging through all of them. This mapping allows us to demonstrate that the set of these indices are described with two families of finite sequences with arithmetic differences. Composite odd numbers are then shown to be obtained as differences of two squa [...] Read more.
Abstract   ReferencesPDF (623 K)   August 2, 2018    500 Downloads   3474 Views   
Open Access
WOLF Marc, WOLF François, LE COZ Corentin
Abstract: We propose a new algorithm solving the extended gcd problem, which provides a solution minimizing one of the two coordinates. The algorithm relies on elementary arithmetic properties. [...] Read more.
Abstract   ReferencesPDF (269 K)   August 2, 2018    391 Downloads   3133 Views   

Volume 3, Issue 2, April 2018

Open Access
Ayman Waziry
Abstract: Science is a matter of asking for information by specifying the difference between fact and opinion. Fact in a scientific context is a generally accepted reality, but still open to scientific inquiry, as opposed to an absolute truth, which is not a part of science. The hypotheses and theories are generally based on objectiv [...] Read more.
Abstract   ReferencesPDF (4728 K)   April 24, 2018    2363 Downloads   14874 Views   

Volume 3, Issue 1, February 2018

Open Access
Yeong-Jeu Sun
Abstract: In this paper, the existence of limit cycles for a class of nonlinear systems is explored. Based on the time-domain approach with differential and integral inequalities, the phenomenon of the stable limit cycle can be accurately verified for such nonlinear systems. Furthermore, the exponentially stable limit cycles, frequen [...] Read more.
Abstract   ReferencesPDF (195 K)   December 30, 2017    420 Downloads   3133 Views   
Open Access
Lázaro J. Miranda Díaz
Abstract: Radical arithmetic electronic controllers for automatic control of industrial processes, base their operating principle on the use of new mathematical equations deduced specifically for this purpose and they have been reviewed and approved by MsC. Maria Victoria Mederos, professor at the Faculty of mathematics and computer [...] Read more.
Abstract   ReferencesPDF (317 K)   January 7, 2018    303 Downloads   3108 Views   
Open Access
Alexander V. Evako
Abstract: In the present paper, we study basic properties of digital n-dimensional manifolds and digital simply connected spaces. An important property of a digital n-manifold is that M is a digital n-sphere if and only if for any point v of M, M-v is a digital n-disk. It is proved that a digital (n-1)-sphere S [...] Read more.
Abstract   ReferencesPDF (1033 K)   January 14, 2018    306 Downloads   3003 Views   
Open Access
Xiwu Han
Abstract: This paper at first isolates a group of Monty Hall problems, in which all doors are exhaustively chosen, swapped and revealed one by one, then introduces a new variant of briefer tree diagrams for the conditional probability calculation of three-doors and four-doors, and finally gives the recurrence form for n-doors and its [...] Read more.
Abstract   ReferencesPDF (346 K)   January 14, 2018    285 Downloads   3002 Views   
Open Access
Abstract: A numerical investigation of an unsteady MHD natural convection flow past an impulsively moving plate with ramped temperature. The dimensionless governing coupled, non- linear boundary layer partial differential equations are solved by a finite element method. The effects of the various dimensionless parameters entering int [...] Read more.
Abstract   ReferencesPDF (973 K)   January 14, 2018    256 Downloads   3084 Views   

Volume 2, Issue 3, December 2017

Open Access
Fengxia Zheng
Abstract: In this paper, by introducing the concept of a generalized concave operator and the properties of cone and monotone iterative technique in ordered Banach spaces, some new existence and uniqueness theorems of fixed points for the operator under more extensive conditions are obtained. Finally, as applications, we apply the re [...] Read more.
Abstract   ReferencesPDF (387 K)   November 4, 2017    422 Downloads   3304 Views   

Volume 2, Issue 2, April 2017

Open Access
Zdravko Dimitrov Slavov, Christina Slavova Evans
Abstract: In this paper we consider the first general theories of multi-objective mathematical programming. They stem from optimization techniques in economics and are attributed to the economists Francis Edgeworth and Vilfredo Pareto. We will focus our attention on these ideas from a mathematical point of view. [...] Read more.
Abstract   ReferencesPDF (321 K)   April 25, 2017    297 Downloads   3091 Views   
Open Access
Shinemin Lin, Domenick Thomas
Abstract: Over the past six years, I have integrated student engagement through inquiry- and project-based learning into college mathematics instructions. I attended many workshops about using computation modeling in the classroom supports student learning and reduces student anxiety. Through dynamic modeling students can connect Ma [...] Read more.
Abstract   ReferencesPDF (579 K)   May 10, 2017    344 Downloads   3185 Views   

Volume 2, Issue 1, February 2017

Open Access
Behnam Razzaghmaneshi
Abstract: Let be the JS-imprimitive of that is . This group has order 48 and is generated by the matrices... ... [...] Read more.
Abstract   ReferencesPDF (634 K)   February 27, 2017    396 Downloads   3396 Views   

Volume 1, Issue 2, December 2016

Open Access
Lam Weng Hoe, Lam Weng Siew
Abstract: Investors wish to minimize the risk and achieve the target rate of return in their investment. The mean-extended Gini model has been proposed in portfolio optimization to minimize the portfolio risk. The mean is used as the expected return of the investors and extended Gini is used as risk measure. The objective function of [...] Read more.
Abstract   ReferencesPDF (219 K)   December 21, 2016    2446 Downloads   18580 Views   
Open Access
Andrii Safonyk
Abstract: In this paper, the mathematical model of biological water treatment by spatial filter was designed. The algorithm of numerical-asymptotic approximation of the solution of the corresponding model problem was developed. It describes a system of nonlinear singularly perturbed differential equations, such as "convection-diffusi [...] Read more.
Abstract   ReferencesPDF (637 K)   December 23, 2016    359 Downloads   3343 Views   
Open Access
Rafidah Ali, Ani Shabri
Abstract: The tourism industry is an increasingly important national industry for Malaysia. Government policymakers and business managers pay close attention to the development of the tourism industry. In this study, two machine learning methods, artificial neural network (ANN) and support vector machine (SVM) were utilized to predic [...] Read more.
Abstract   ReferencesPDF (340 K)   January 11, 2017    313 Downloads   3248 Views   

Volume 1, Issue 1, October 2016

Open Access
Syed Adil Hussain, Taha Hasan Associate Professor
Abstract: This research considers the Bayesian inference & ranking of the domestic News TV channels using method of paired comparisons. Results for analysis are computed in C language and programs’ coding are executed for seven parametric model’s inference. Furthermore, to ensure the appropriateness of the model, the goodness of fit [...] Read more.
Abstract   ReferencesPDF (420 K)   October 17, 2016    2454 Downloads   27545 Views   
Open Access
Omprakash Sikhwal, Yashwant Vyas
Abstract: Various sequences of polynomials by the names of Fibonacci and Lucas polynomials occur in the literature over a century. Generalization of the Fibonacci polynomial has been done using various approaches. One usually found in the literature that the generalization is done by varying the initial conditions. In this paper we s [...] Read more.
Abstract   ReferencesPDF (601 K)   October 17, 2016    2511 Downloads   24416 Views   
Open Access
Munmun Nath, Bijan Nath, Santanu Roy
Abstract: In this article, the notion of different types of statistically convergent and statistically null fuzzy real-valued sequences having multiplicity greater than two is introduced. Some algebraic and topological properties such as solid, monotone, symmetric, convergence free, sequence algebra etc. of these spaces are studied. [...] Read more.
Abstract   ReferencesPDF (683 K)   October 17, 2016    2401 Downloads   23431 Views   
Open Access
Xiaoyang Zheng, Hong Su, Liqiong Qiu, Jiangping He
Abstract: This presents a refined approach for computing integral and product operators by using the rich properties of Legendre wavelet.The most advantages of this refined calculations are that the operational matrices are lower dimensions, coarse and its elements are the same on each subinterval, respectively. The operational matri [...] Read more.
Abstract   ReferencesPDF (213 K)   October 17, 2016    2454 Downloads   14445 Views   
Open Access
Maged G. Bin-Saad, Amani M. Hanballa
Abstract: In this work we will introduce and study a generalized zeta function of the general Hurwitz – Lerch zeta functions. Here, we aim to derive basic properties of generalized zeta function for the general Hurwitz – Lerch zeta functions include some integral representations for several general Hurwitz – Lerch zeta functions a [...] Read more.
Abstract   ReferencesPDF (485 K)   October 19, 2016    2451 Downloads   14540 Views   
Open Access
Li Wang, Assistant Professor, Lei Jin, PhD
Abstract: In past many years, biomathematics population models are constructed based on plausible explicit and implicit biological assumptions. In the case that not enough analysis is carried out for a well-motivated and plausible model, the result is no or minimum insights gained. In this study, existence of Hopf bifurcations of a n [...] Read more.
Abstract   ReferencesPDF (242 K)   October 20, 2016    469 Downloads   3453 Views   
Open Access
Abstract: Abstract In this paper, the global, non-vacuum solutions with large amplitude to the initial-boundary value problem of the one-dimensional compressible Navier-Stokes-Poisson system with viscosity and heat conductivity coefficients are considered. The proof is based on the analysis on the positive lower and upper bounds on [...] Read more.
Abstract   ReferencesPDF (676 K)   October 20, 2016    432 Downloads   3713 Views   
Open Access
Lam Weng Siew, Liew Kah Fai, Lam Weng Hoe
Abstract: Healthcare industry plays an important role in the society and attracts the attention of the public nowadays. Healthcare industry has played a vital role in this world to provide goods and services to enhance quality of life, life expectancy, diagnostic and treatment options as well as the efficiency and cost effectiveness [...] Read more.
Abstract   ReferencesPDF (188 K)   October 20, 2016    2365 Downloads   14572 Views   
Open Access
G.P.S. Rathore, Omprakash Sikhwal, Ritu Choudhary
Abstract: Sequences have been fascinating topic for mathematicians for centuries. The Fibonacci and Lucas sequences are examples of second order recursive sequences. Fibonacci sequence is defined by In recent years, few research scholars have been introduced Fibonacci-Like sequences which are similar to Fibonacci sequences in recur [...] Read more.
Abstract   ReferencesPDF (350 K)   October 28, 2016    2402 Downloads   14530 Views   
Open Access
LabadzeLevan, SokhadzeGrigol, KvatadzeZurab
Abstract: An estimation procedure for Ornstein–Uhlenbeck process drift and volatility coefficients is given. The procedure is based on the maximum likelihood principle andplug-in-estimator. [...] Read more.
Abstract   ReferencesPDF (335 K)   November 13, 2016    368 Downloads   3379 Views   
Open Access
Dariush Akbarian, Hossein Dibachi
Abstract: Free Replication Hull (FRH) is a special case of the CCR DEA problem in which the convexity axiom is excluded from the PPS of the CCR model and the intensity variables are restricted to the whole numbers. In this paper we propose MAJ-FRH, similar to the ranking method in data envelopment analysis proposed by Mehrabian et al [...] Read more.
Abstract   ReferencesPDF (552 K)   November 17, 2016    371 Downloads   3386 Views   
Open Access
Dariush Akbarian
Abstract: The out-of-kilter algorithm is one of the basic algorithms that solve the minimum cost flow problem. The aim of this paper is to shows that if the dual of out of kilter formulation has optimal solution then it has integer optimal solution too [...] Read more.
Abstract   ReferencesPDF (371 K)   November 17, 2016    418 Downloads   3159 Views   
Open Access
Lena J-T Strömberg
Abstract: Solutions to the Navier-Stokes equations for the Millenium Prize Problem are provided. These consist of a transient Pile-Up flow. A proof is given to show that the flow functions satisfy the Boundary Conditions at infinity. The proof for the spatial derivatives of velocity, u, and force, f, relies on decomposition of an exp [...] Read more.
Abstract   ReferencesPDF (182 K)   November 19, 2016    389 Downloads   3477 Views   
Open Access
Shikha Bhatnagar, Omprakash Sikhwal
Abstract: In this paper, we consider additive pulsating Fibonacci sequences. First, we are introduced additive pulsating Fibonacci sequences of first and second kind. Further, explicit formulas in the form of its members are formulated and proved for additive pulsating Fibonacci sequences of first and second kind. [...] Read more.
Abstract   ReferencesPDF (314 K)   November 23, 2016    360 Downloads   3526 Views   
Open Access
Shikha Bhatnagar, Omprakash Sikhwal
Abstract: The Fibonacci polynomials and Lucas polynomials are famous for possessing wonderful and amazing properties and identities. In this paper, Generalized Fibonacci polynomials are introduced and study its properties. Further, some recurrence relations state and derive for generalized Fibonacci polynomials. [...] Read more.
Abstract   ReferencesPDF (413 K)   November 23, 2016    449 Downloads   3186 Views   
Open Access
Lena J-T Strömberg
Abstract: Rational points on elliptic curves are considered, in the formulation of BSD, and for nonlinear dynamical systems. Method used is the intersection with other curves, for a more general expression of an elliptic curve, known as an extended elliptic curve. It is found that there are elliptic curves with at most 3 rational sol [...] Read more.
Abstract   ReferencesPDF (379 K)   November 29, 2016    396 Downloads   3554 Views   
Open Access
Yu. N. Zayko
Abstract: The article discusses some of the mathematical results widely used in practice which contain the Riemann ζ-function, and, at first glance, are in contradiction with common sense. A geometric approach is suggested, based on the concept of the curvature of space, in which is calculated an algorithm that specifies the represe [...] Read more.
Abstract   ReferencesPDF (298 K)   December 14, 2016    406 Downloads   3249 Views   
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by Sergey M. Afonin
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by Jian-Qiang Wang, Chen-Xi Wang, Jian-Guo Wang, HRSCNP Research Team
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