권호 표지

Journal of applied mathematics & informatics

한국전산응용수학회 (The Korean Society for Computational and Applied Mathematics)

  • 연3회간
  • /
  • 2734-1194(pISSN)
  • /
  • 2234-8417(eISSN)

과학기술표준분류

  • 수학 ＞ 응용수학

Aim & Scope

This is a broad based journal covering all branches of computational or applied mathematics with special encouragement to researchers in theoretical computer science and mathematical Informatics. Thus, the major areas, such as Numerical Analysis, Discrete Optimization, Linear and Nonlinear Programming, Theory of Computation(Computational Complexity, Automata and Formal Languages), Control Theory, Theory of Algorithms, Computational Logic, Applied Combinatorics (including graphs, codes, and designs), Coding Theory, Cryptographics, Big data, AI, Fuzzy Theory with applications, Differential Equations with applications, etc., are all included. A large variety of scientific problems also necessarily involve Algebra, Analysis, Geometry, Probability and Statistics, and so on. The journal welcomes research papers in all branches of mathematics which have some bearing on the application to scientific problems, including papers in the areas of Actuarial Science, Mathematical Biology, Mathematical Economics and Finance.

KSCI KCI SCOPUS

제40권3_4호

  1. MELESE, DAWIT 393
    https://doi.org/10.14317/jami.2022.393 PDF KSCI
    In this paper, a diffusive predator-prey system with Beddington DeAngelis functional response and the modified Leslie-Gower type predator dynamics when a prey population is infected is considered. The predator is assumed to predate both the susceptible prey and infected prey following the Beddington-DeAngelis functional response and Holling type II functional response, respectively. The predator follows the modified Leslie-Gower predator dynamics. Both the prey, susceptible and infected, and predator are assumed to be distributed in-homogeneous in space. A reaction-diffusion equation with Neumann boundary conditions is considered to capture the dynamics of the prey and predator population. The global attractor and persistence properties of the system are studied. The priori estimates of the non-constant positive steady state of the system are obtained. The existence of non-constant positive steady state of the system is investigated by the use of Leray-Schauder Theorem. The existence of non-constant positive steady state of the system, with large diffusivity, guarantees for the occurrence of interesting Turing patterns.
  2. BERKAL, M.;BEREHAL, K.;REZAIKI, N. 409
    https://doi.org/10.14317/jami.2022.409 PDF KSCI
    In this paper, we deal with the existence of solutions of the following system of nonlinear rational difference equations with order five $x_{n+1}=\frac{y_{n-3}x_{n-4}}{y_n(a+by_{n-3}x_{n-4})}$, $y_{n+1}=\frac{x_{n-3}y_{n-4}}{x_n(c+dx_{n-3}y_{n-4})}$, n = 0, 1, ⋯, where parameters a, b, c and d are not executed at the same time and initial conditions x-4, x-3, x-2, x-1, x0, y-4, y-3, y-2, y-1 and y0 are non zero real numbers.
  3. DEMIRCI, ISIL ACIK;GURDAL, MEHMET 433
    https://doi.org/10.14317/jami.2022.433 PDF KSCI
    In the present paper, we introduce some new notions of Wijsman ${\mathcal{I}}$-statistical convergence with the use of Orlicz function, lacunary sequence and triple sequences of sets, and obtain some analogous results from the new definitions point of views.
  4. ALEMAYEHU, TEFERI GETACHEW;GUBENA, YESHIWAS MEBRAT 445
    https://doi.org/10.14317/jami.2022.445 PDF KSCI
    In this paper, we studied on 𝛽-fuzzy filters of Stone almost distributive lattices. An isomorphism between the lattice of 𝛽-fuzzy filters of a Stone ADL A onto the lattice of fuzzy ideals of the set of all boosters of A is established. The fact that any 𝛽-fuzzy filter of A is an e-fuzzy filter of A is proved. We discuss on some properties of prime 𝛽-fuzzy filters and some topological concepts on the collection of prime 𝛽-fuzzy filters of a Stone ADL. Further we show that the collection 𝓣 = {X𝛽(λ) : λ is a fuzzy ideal of A} is a topology on 𝓕Spec𝛽(A) where X𝛽(λ) = {𝜇 ∈ 𝓕Spec𝛽(A) : λ ⊈ 𝜇}.
  5. KANG, J.Y.;RYOO, C.S. 461
    https://doi.org/10.14317/jami.2022.461 PDF KSCI
    In this paper, we study differential equations arising from the generating functions of the geometric polynomials. We give explicit identities for the geometric polynomials. Finally, we investigate the zeros of the geometric polynomials by using computer.
  6. PRASAD, RAJENDRA;HASEEB, ABDUL;GUPTA, POOJA 475
    https://doi.org/10.14317/jami.2022.475 PDF KSCI
    The main purpose of the present paper is to introduce a brief analysis on some properties of quasi hemi-slant submanifolds of Kenmotsu manifolds. After discussing the introduction and some preliminaries about the Kenmotsu manifold, we worked out some important results in the direction of integrability of the distributions of quasi hemi-slant submanifolds of Kenmotsu manifolds. Afterward, we investigate the conditions for quasi hemi-slant submanifolds of a Kenmotsu manifold to be totally geodesic and later we provide some non-trivial examples to validate the existence of such submanifolds.
  7. TEFERA, DAGNACHEW MENGSTIE;TIRUNEH, AWOKE ANDARGIE;DERESE, GETACHEW ADAMU 491
    https://doi.org/10.14317/jami.2022.491 PDF KSCI
    This paper is concerned with singularly perturbed convection-diffusion parabolic partial differential equations which have time-delayed. We used the Crank-Nicolson(CN) scheme to build a fitted operator to solve the problem. The underling method's stability is investigated, and it is found to be unconditionally stable. We have shown graphically the unstableness of CN-scheme without fitting factor. The order of convergence of the present method is shown to be second order both in space and time in relation to the perturbation parameter. The efficiency of the scheme is demonstrated using model examples and the proposed technique is more accurate than the standard CN-method and some methods available in the literature, according to the findings.
  8. NAGASWARA, P.;RAJESHWARI, S. 507
    https://doi.org/10.14317/jami.2022.507 PDF KSCI
    In this paper, we investigate some results on complex delay-differential equations of the classical Malmquist theorem. A classic illustrations of their results states us that if a complex delay equation w(t + 1) + w(t - 1) = R(t, w) with R(t, w) rational in both arguments admits (concede) a transcendental meromorphic solution of finite order, then degwR(t, w) ≤ 2. Development and upgrade of such results are presented in this paper. In addition, Borel exceptional zeros and poles seem to appear in special situations.
  9. CHOO, SANG-MOK;KIM, YOUNG-HEE 515
    https://doi.org/10.14317/jami.2022.515 PDF KSCI
    A factor graph and belief propagation can be used for finding stochastic values of link weights in biological networks. However it is not easy to follow the process of use and so we presented the process with a toy network of three nodes in our prior work. We extend this work more generally and present numerical example for a network of 100 nodes.
  10. TRUC, TRINH NGOC;THANG, TRINH DINH;TUYEN, TRAN MINH 531
    https://doi.org/10.14317/jami.2022.531 PDF KSCI
    The article proposed a new type of data relationship: Positive Boolean dependencies by groups on block and slice in the database model of block form, where instead of considering value pairs, we consider a group of p values (p ≥ 2). From this new concept, the article stated and demonstrated the equivalence of the three types of deduction, namely: deduction by logic, deduction by block with groups, deduction by block has no more than p elements with groups. Operations on blocks or slices performed for index attributes on blocks, the properties related to this new concept as theorem the equivalen of the three types of deduction, closure of set positive Boolean dependencies by groups and representation and tight representation set of positive Boolean dependencies by groups when the block degenerated into relation are true in the relational database model and also stated and proven in this paper.
  11. SHAW, ABHIJIT 545
    https://doi.org/10.14317/jami.2022.545 PDF KSCI
    Using the conception of weakly weighted sharing we discussed the value distribution of the differential product functions constructed with a polynomial and difference operator of entire function. Here we established two uniqueness result on product of difference operators when two such functions share a small function.
  12. KALAIVANI, S.;SIVAKUMAR, K.;VIJAYARANGAM, J. 563
    https://doi.org/10.14317/jami.2022.563 PDF KSCI
    Many organizations seek statistical modelling facilitated by data analytics technologies for determining the prediction models associated with M&A (Merger and Acquisition). By combining these data analytics tool alongside with data collection approaches aids organizations towards M&A decision making, followed by achieving profitable insights as well. It promotes for better visibility, overall improvements and effective negotiation strategies for post-M&A integration. This paper explores on the impact of pre and post integration of M&A in a standard organizational setting via devising a suitable statistical model via employing techniques such as Naïve Bayes, K-nearest neighbour (KNN), and Decision Tree & Support Vector Machine (SVM).
  13. RAM, TIRTH;KHANNA, ANU KUMARI 577
    https://doi.org/10.14317/jami.2022.577 PDF KSCI
    In this work, we introduced and study vector equilibrium problems for trifunction in measurable space (for short, VEPMS). The existence of solutions of (VEPMS) are obtained by employing Aumann theorem and Fan KKM lemma. As an application, we prove an existence result for vector variational inequality problem for measurable space. Our results in this paper are new which can be considered as significant extension of previously known results in the literature.
  14. MAJHI, PRADIP;WOO, CHANGHWA;BISWAS, ABHIJIT 587
    https://doi.org/10.14317/jami.2022.587 PDF KSCI
    We find the characterizations of the curvatures of Legendre curves and magnetic curves in Kenmotsu manifolds with C-parallel and C-proper mean curvature vector fields in the tangent and normal bundles. Finally, an illustrative example is presented.
  15. LUBO, GEMEDA TOLESSA;DURESSA, GEMECHIS FILE 603
    https://doi.org/10.14317/jami.2022.603 PDF KSCI
    In this paper, a numerical solution of the generalized diffusion equation with a delay has been obtained by a numerical technique based on the Galerkin finite element method by applying the cubic B-spline basis functions. The time discretization process is carried out using the forward Euler method. The numerical scheme is required to preserve the delay-independent asymptotic stability with an additional restriction on time and spatial step sizes. Both the theoretical and computational rates of convergence of the numerical method have been examined and found to be in agreement. As it can be observed from the numerical results given in tables and graphs, the proposed method approximates the exact solution very well. The accuracy of the numerical scheme is confirmed by computing L2 and L∞ error norms.
  16. KISI, OMER;DUNDAR, ERDINC 619
    https://doi.org/10.14317/jami.2022.619 PDF KSCI
    In this study, we examine rough ${\Delta}\mathcal{I}$-statistical convergence for difference sequences as an extension of rough convergence. We investigate the set of rough ${\Delta}\mathcal{I}$-statistical limit points of a difference sequence and analyze the results with proofs.
  17. BISWAS, M.H.A.;KHATUN, M.S.;ISLAM, M.A.;MANDAL, S.;PAUL, A.K.;ALI, A. 633
    https://doi.org/10.14317/jami.2022.633 PDF KSCI
    Many regions of the world are now facing the second wave of boomed cases of COVID-19. This time, the second wave of this highly infectious disease (COVID-19) is becoming more devastating. To control the existing situation, more mass testing, and tracing of COVID-19 positive individuals are required. Furthermore, practicing to wear a face mask and maintenance of physical distancing are strongly recommended for everyone. Taking all these into consideration, an optimal control problem has been reformulated in terms of nonlinear ordinary differential equations in this paper. The aim of this study is to explore the control strategy of coronavirus-2 disease (COVID-19) and thus, minimize the number of symptomatic, asymptomatic and infected individuals as well as cost of the controls measures. The optimal control model has been analyzed analytically with the help of the necessary conditions of very well-known Pontryagin's maximum principle. Numerical simulations of the optimal control problem are also performed to illustrate the results.
  18. RAJ, KULDIP;AIYUB, M.;SAINI, KAVITA 657
    https://doi.org/10.14317/jami.2022.657 PDF KSCI
    In the present paper we introduce and study Euler sequence spaces of fractional difference and backward difference operators. We make an effort to prove that these spaces are BK-spaces and linearly isomorphic. Further, Schauder basis for Euler fractional difference sequence spaces $e^{\varsigma}_{0,p}({\Delta}^{(\tilde{\beta})},\;{\nabla}^m)$ and $e^{\varsigma}_{c,p}({\Delta}^{(\tilde{\beta})},\;{\nabla}^m)$ are also elaborate. In addition to this, we determine the 𝛼-, 𝛽- and 𝛾- duals of these spaces.
  19. RHEE, HYANG JOO 669
    https://doi.org/10.14317/jami.2022.669 PDF KSCI
    In this paper, we shall consider some properties of the metric projection as a set valued mapping. For a set G in a metric space E, the mapping 𝜋G; x → 𝜋G(x) of E into 2G is called set valued metric projection of E onto G. We investigated the properties related to the projection PS(·)(·) and 𝜋S(·)(·) as one-sided best simultaneous approximations.
  20. GEDEFAW, HUSSEN;GIDAF, FASIL;SIRAW, HABTAMU;MERGIAW, TADESSE;TSEGAW, GETACHEW;WOLDESELASSIE, ASHENAFI;ABERA, MELAKU;KASSIM, MAHMUD;LISANU, WONDOSEN;MEBRATE, BENYAM 675
    https://doi.org/10.14317/jami.2022.675 PDF KSCI
    In this article, we investigate the solution of the inverse problem for one dimensional heat equation with Neumann and Robin boundary conditions, that is, we determine the temperature and source term with given initial and boundary conditions. Three radial basis functions(RBFs) have been used for numerical solution, and Homotopy perturbation method for analytic solution. Numerical solutions which are obtained by considering each of the three RBFs are compared to the exact solution. For appropriate value of shape parameter c, numerical solutions best approximates exact solutions. Furthermore, we have shown the impact of noisy data on the numerical solution of u and f.
  21. MUSTAFA, ABDELFATTAH;ABDEL MONEIM, F.M.;EL-DESOUKY, B.S. 695
    https://doi.org/10.14317/jami.2022.695 PDF KSCI
    In this paper, we present a new definition and generalization of the first and second kinds of Daehee numbers and polynomials with the higher order. Some new results for these polynomials and numbers are derived. Furthermore, some interesting special cases of the new generalized Daehee polynomials and numbers of higher order are deduced.
  22. ANSARI, ABU ZAID;SHUJAT, FAIZA 709
    https://doi.org/10.14317/jami.2022.709 PDF KSCI
    The objective of this research is to prove that an additive mapping T : R → R is a left as well as right centralizer on R if it satisfies any one of the following identities: (i) T(xnyn + ynxn) = T(xn)yn + ynT(xn) (ii) 2T(xnyn) = T(xn)yn + ynT(xn) for each x, y ∈ R, where n ≥ 1 is a fixed integer and R is any n!-torsion free semiprime ring. In addition, we talk over above identities in the setting of *-ring(ring with involution).
  23. FALLATAH, AHLAM;MASSA'DEH, MOURAD OQLA;ALKOURI, ABD ULAZEEZ 719
    https://doi.org/10.14317/jami.2022.719 PDF KSCI
    In this paper, the concept of (𝛾, 𝜕)-fuzzy HX-subgroups is introduced. We present some properties of (𝛾, 𝜕)-normal fuzzy HX-subgroups and we discuss some results related to (𝛾, 𝜕)-fuzzy cosets.
  24. PARK, MIN JI;JEONG, JONG WON;LIM, JUNG WOOK;BAE, JIN WON 729
    https://doi.org/10.14317/jami.2022.729 PDF KSCI
    Let ℤ be the ring of integers and let ℤn be the ring of integers modulo n. Let ℤ(+)ℤn be the idealization of ℤn in ℤ and let (ℤ(+)ℤn)[X]] be either (ℤ(+)ℤn)[X] or (ℤ(+)ℤn)[[X]]. In this article, we study the zero-divisor graphs of ℤ(+)ℤn and (ℤ(+)ℤn)[X]]. More precisely, we completely characterize the diameter and the girth of the zero-divisor graphs of ℤ(+)ℤn and (ℤ(+)ℤn)[X]]. We also calculate the chromatic number of the zero-divisor graphs of ℤ(+)ℤn and (ℤ(+)ℤn)[X]].
  25. KUMARI, DIPANSHA;NAGARAJA, H.G.;KUMAR, D.L. KIRAN 741
    https://doi.org/10.14317/jami.2022.741 PDF KSCI
    The object of the present paper is to study some geometric properties of invariant submanifolds of N(k)-contact metric manifold admitting generalized Tanaka-Webster connection.
  26. ALDAWISH, I.;AOUF, M.K.;SEOUDY, T.M.;FRASIN, B.A. 753
    https://doi.org/10.14317/jami.2022.753 PDF KSCI
    In this paper, we introduce and investigate two new subclasses of p-valent analytic functions of complex order defined by using q-p-valent Bernardi integral operator. Also we obtain coefficient estimates and consequent inclusion relationships involving the (q, m, 𝛿)-neighborhoods of these subclasses.
  27. MATYSIAK, LUKASZ 765
    https://doi.org/10.14317/jami.2022.765 PDF KSCI
    The inverse Galois problem concerns whether or not every finite group appears as the Galois group of some Galois extension of the rational numbers. This problem, first posed in the early 19th century, is unsolved. In other words, we consider a pair - the group G and the field K. The question is whether there is an extension field L of K such that G is the Galois group of L. In this paper we present the proof that any group G is a Galois group of any field extension. In other words, we only consider the group G. And we present the solution to the inverse Galois problem.
  28. LINESAWAT, KRITTIKA;LEKKOKSUNG, SOMSAK;LEKKOKSUNG, NAREUPANAT 769
    https://doi.org/10.14317/jami.2022.769 PDF KSCI
    The main theme of this present paper is to study ordered semigroups in the context of anti-hybrid interior ideals. The notion of anti-hybrid interior ideals in ordered semigroups is introduced. We prove that the concepts of ideals and interior coincide in some particular classes of ordered semigroups; regular, intra-regular, and semisimple. Finally, the characterization of semisimple ordered semigroups in terms of anti-hybrid interior ideals is considered.
  29. YOO, JONG-KWANG 785
    https://doi.org/10.14317/jami.2022.785 PDF KSCI
    In this paper we show that if A ∈ L(X) and R ∈ L(X) is a quasinilpotent operator commuting with A then XA(F) = XA+R(F) for all subset F ⊆ ℂ and 𝜎loc(A) = 𝜎loc(A + R). Moreover, we show that A and A + R share many common local spectral properties such as SVEP, property (C), property (𝛿), property (𝛽) and decomposability. Finally, we show that quasisimility preserves local spectrum.
  30. PRANJALI, PRANJALI;KUMAR, AMIT;YADAV, TANUJA 795
    https://doi.org/10.14317/jami.2022.795 PDF KSCI
    The aim of author's in this paper is to study the Cayley graph in the realm of signed graph. Moreover, we have characterized generating sets and finite abelian groups that corresponds to balanced Cayley signed graphs. The notion of Cayley signed graph has been demonstrated with the ample number of examples.