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MATHEMATICS (658 journals)                  1 2 3 4 | Last

Showing 1 - 200 of 538 Journals sorted alphabetically
Abakós     Open Access   (Followers: 4)
Abhandlungen aus dem Mathematischen Seminar der Universitat Hamburg     Hybrid Journal   (Followers: 3)
Academic Voices : A Multidisciplinary Journal     Open Access   (Followers: 2)
Accounting Perspectives     Full-text available via subscription   (Followers: 8)
ACM Transactions on Algorithms (TALG)     Hybrid Journal   (Followers: 16)
ACM Transactions on Computational Logic (TOCL)     Hybrid Journal   (Followers: 4)
ACM Transactions on Mathematical Software (TOMS)     Hybrid Journal   (Followers: 6)
ACS Applied Materials & Interfaces     Full-text available via subscription   (Followers: 25)
Acta Applicandae Mathematicae     Hybrid Journal   (Followers: 1)
Acta Mathematica     Hybrid Journal   (Followers: 11)
Acta Mathematica Hungarica     Hybrid Journal   (Followers: 2)
Acta Mathematica Scientia     Full-text available via subscription   (Followers: 5)
Acta Mathematica Sinica, English Series     Hybrid Journal   (Followers: 6)
Acta Mathematica Vietnamica     Hybrid Journal  
Acta Mathematicae Applicatae Sinica, English Series     Hybrid Journal  
Advanced Science Letters     Full-text available via subscription   (Followers: 8)
Advances in Applied Clifford Algebras     Hybrid Journal   (Followers: 3)
Advances in Calculus of Variations     Hybrid Journal   (Followers: 2)
Advances in Catalysis     Full-text available via subscription   (Followers: 5)
Advances in Complex Systems     Hybrid Journal   (Followers: 7)
Advances in Computational Mathematics     Hybrid Journal   (Followers: 15)
Advances in Decision Sciences     Open Access   (Followers: 5)
Advances in Difference Equations     Open Access   (Followers: 2)
Advances in Fixed Point Theory     Open Access   (Followers: 5)
Advances in Geosciences (ADGEO)     Open Access   (Followers: 10)
Advances in Linear Algebra & Matrix Theory     Open Access   (Followers: 2)
Advances in Materials Sciences     Open Access   (Followers: 16)
Advances in Mathematical Physics     Open Access   (Followers: 5)
Advances in Mathematics     Full-text available via subscription   (Followers: 10)
Advances in Numerical Analysis     Open Access   (Followers: 4)
Advances in Operations Research     Open Access   (Followers: 11)
Advances in Porous Media     Full-text available via subscription   (Followers: 4)
Advances in Pure and Applied Mathematics     Hybrid Journal   (Followers: 6)
Advances in Pure Mathematics     Open Access   (Followers: 4)
Advances in Science and Research (ASR)     Open Access   (Followers: 6)
Aequationes Mathematicae     Hybrid Journal   (Followers: 2)
African Journal of Educational Studies in Mathematics and Sciences     Full-text available via subscription   (Followers: 5)
African Journal of Mathematics and Computer Science Research     Open Access   (Followers: 4)
Afrika Matematika     Hybrid Journal   (Followers: 1)
Air, Soil & Water Research     Open Access   (Followers: 9)
AKSIOMA Journal of Mathematics Education     Open Access   (Followers: 1)
Al-Jabar : Jurnal Pendidikan Matematika     Open Access  
Algebra and Logic     Hybrid Journal   (Followers: 4)
Algebra Colloquium     Hybrid Journal   (Followers: 4)
Algebra Universalis     Hybrid Journal   (Followers: 2)
Algorithmic Operations Research     Full-text available via subscription   (Followers: 5)
Algorithms     Open Access   (Followers: 11)
Algorithms Research     Open Access   (Followers: 1)
American Journal of Biostatistics     Open Access   (Followers: 9)
American Journal of Computational and Applied Mathematics     Open Access   (Followers: 4)
American Journal of Mathematical Analysis     Open Access  
American Journal of Mathematics     Full-text available via subscription   (Followers: 7)
American Journal of Operations Research     Open Access   (Followers: 5)
American Mathematical Monthly     Full-text available via subscription   (Followers: 6)
An International Journal of Optimization and Control: Theories & Applications     Open Access   (Followers: 7)
Analele Universitatii Ovidius Constanta - Seria Matematica     Open Access   (Followers: 1)
Analysis     Hybrid Journal   (Followers: 2)
Analysis and Applications     Hybrid Journal   (Followers: 1)
Analysis and Mathematical Physics     Hybrid Journal   (Followers: 3)
Analysis Mathematica     Full-text available via subscription  
Annales Mathematicae Silesianae     Open Access  
Annales mathématiques du Québec     Hybrid Journal   (Followers: 4)
Annales UMCS, Mathematica     Open Access   (Followers: 1)
Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica     Open Access  
Annali di Matematica Pura ed Applicata     Hybrid Journal   (Followers: 1)
Annals of Combinatorics     Hybrid Journal   (Followers: 3)
Annals of Data Science     Hybrid Journal   (Followers: 11)
Annals of Discrete Mathematics     Full-text available via subscription   (Followers: 6)
Annals of Mathematics     Full-text available via subscription  
Annals of Mathematics and Artificial Intelligence     Hybrid Journal   (Followers: 7)
Annals of Pure and Applied Logic     Open Access   (Followers: 2)
Annals of the Alexandru Ioan Cuza University - Mathematics     Open Access  
Annals of the Institute of Statistical Mathematics     Hybrid Journal   (Followers: 1)
Annals of West University of Timisoara - Mathematics     Open Access  
Annuaire du Collège de France     Open Access   (Followers: 5)
Applicable Algebra in Engineering, Communication and Computing     Hybrid Journal   (Followers: 2)
Applications of Mathematics     Hybrid Journal   (Followers: 1)
Applied Categorical Structures     Hybrid Journal   (Followers: 2)
Applied Computational Intelligence and Soft Computing     Open Access   (Followers: 12)
Applied Mathematics     Open Access   (Followers: 3)
Applied Mathematics     Open Access   (Followers: 4)
Applied Mathematics & Optimization     Hybrid Journal   (Followers: 4)
Applied Mathematics - A Journal of Chinese Universities     Hybrid Journal  
Applied Mathematics Letters     Full-text available via subscription   (Followers: 1)
Applied Mathematics Research eXpress     Hybrid Journal   (Followers: 1)
Applied Network Science     Open Access   (Followers: 1)
Applied Numerical Mathematics     Hybrid Journal   (Followers: 5)
Applied Spatial Analysis and Policy     Hybrid Journal   (Followers: 4)
Arab Journal of Mathematical Sciences     Open Access   (Followers: 3)
Arabian Journal of Mathematics     Open Access   (Followers: 2)
Archive for Mathematical Logic     Hybrid Journal   (Followers: 1)
Archive of Applied Mechanics     Hybrid Journal   (Followers: 5)
Archive of Numerical Software     Open Access  
Archives of Computational Methods in Engineering     Hybrid Journal   (Followers: 4)
Arkiv för Matematik     Hybrid Journal   (Followers: 1)
Arnold Mathematical Journal     Hybrid Journal   (Followers: 1)
Artificial Satellites : The Journal of Space Research Centre of Polish Academy of Sciences     Open Access   (Followers: 20)
Asia-Pacific Journal of Operational Research     Hybrid Journal   (Followers: 3)
Asian Journal of Algebra     Open Access   (Followers: 1)
Asian Journal of Current Engineering & Maths     Open Access  
Asian-European Journal of Mathematics     Hybrid Journal   (Followers: 2)
Australian Mathematics Teacher, The     Full-text available via subscription   (Followers: 7)
Australian Primary Mathematics Classroom     Full-text available via subscription   (Followers: 2)
Australian Senior Mathematics Journal     Full-text available via subscription   (Followers: 1)
Automatic Documentation and Mathematical Linguistics     Hybrid Journal   (Followers: 5)
Axioms     Open Access  
Baltic International Yearbook of Cognition, Logic and Communication     Open Access  
Basin Research     Hybrid Journal   (Followers: 5)
BIBECHANA     Open Access   (Followers: 1)
BIT Numerical Mathematics     Hybrid Journal  
BoEM - Boletim online de Educação Matemática     Open Access  
Boletim Cearense de Educação e História da Matemática     Open Access  
Boletim de Educação Matemática     Open Access  
Boletín de la Sociedad Matemática Mexicana     Hybrid Journal  
Bollettino dell'Unione Matematica Italiana     Full-text available via subscription   (Followers: 1)
British Journal of Mathematical and Statistical Psychology     Full-text available via subscription   (Followers: 21)
Bruno Pini Mathematical Analysis Seminar     Open Access  
Buletinul Academiei de Stiinte a Republicii Moldova. Matematica     Open Access   (Followers: 9)
Bulletin des Sciences Mathamatiques     Full-text available via subscription   (Followers: 4)
Bulletin of Dnipropetrovsk University. Series : Communications in Mathematical Modeling and Differential Equations Theory     Open Access   (Followers: 1)
Bulletin of Mathematical Sciences     Open Access   (Followers: 1)
Bulletin of the Brazilian Mathematical Society, New Series     Hybrid Journal  
Bulletin of the London Mathematical Society     Hybrid Journal   (Followers: 3)
Bulletin of the Malaysian Mathematical Sciences Society     Hybrid Journal  
Calculus of Variations and Partial Differential Equations     Hybrid Journal  
Canadian Journal of Science, Mathematics and Technology Education     Hybrid Journal   (Followers: 20)
Carpathian Mathematical Publications     Open Access   (Followers: 1)
Catalysis in Industry     Hybrid Journal   (Followers: 1)
CEAS Space Journal     Hybrid Journal  
CHANCE     Hybrid Journal   (Followers: 5)
Chaos, Solitons & Fractals     Hybrid Journal   (Followers: 3)
ChemSusChem     Hybrid Journal   (Followers: 7)
Chinese Annals of Mathematics, Series B     Hybrid Journal  
Chinese Journal of Catalysis     Full-text available via subscription   (Followers: 2)
Chinese Journal of Mathematics     Open Access  
Clean Air Journal     Full-text available via subscription   (Followers: 2)
Cogent Mathematics     Open Access   (Followers: 2)
Cognitive Computation     Hybrid Journal   (Followers: 4)
Collectanea Mathematica     Hybrid Journal  
College Mathematics Journal     Full-text available via subscription   (Followers: 3)
COMBINATORICA     Hybrid Journal  
Combustion Theory and Modelling     Hybrid Journal   (Followers: 13)
Commentarii Mathematici Helvetici     Hybrid Journal   (Followers: 1)
Communications in Contemporary Mathematics     Hybrid Journal  
Communications in Mathematical Physics     Hybrid Journal   (Followers: 1)
Communications On Pure & Applied Mathematics     Hybrid Journal   (Followers: 3)
Complex Analysis and its Synergies     Open Access   (Followers: 2)
Complex Variables and Elliptic Equations: An International Journal     Hybrid Journal  
Complexus     Full-text available via subscription  
Composite Materials Series     Full-text available via subscription   (Followers: 9)
Comptes Rendus Mathematique     Full-text available via subscription   (Followers: 1)
Computational and Applied Mathematics     Hybrid Journal   (Followers: 2)
Computational and Mathematical Methods in Medicine     Open Access   (Followers: 2)
Computational and Mathematical Organization Theory     Hybrid Journal   (Followers: 2)
Computational Complexity     Hybrid Journal   (Followers: 4)
Computational Mathematics and Modeling     Hybrid Journal   (Followers: 8)
Computational Mechanics     Hybrid Journal   (Followers: 4)
Computational Methods and Function Theory     Hybrid Journal  
Computational Optimization and Applications     Hybrid Journal   (Followers: 7)
Computers & Mathematics with Applications     Full-text available via subscription   (Followers: 5)
Concrete Operators     Open Access   (Followers: 4)
Confluentes Mathematici     Hybrid Journal  
COSMOS     Hybrid Journal  
Cryptography and Communications     Hybrid Journal   (Followers: 14)
Cuadernos de Investigación y Formación en Educación Matemática     Open Access  
Cubo. A Mathematical Journal     Open Access  
Czechoslovak Mathematical Journal     Hybrid Journal   (Followers: 1)
Demographic Research     Open Access   (Followers: 11)
Demonstratio Mathematica     Open Access  
Dependence Modeling     Open Access  
Design Journal : An International Journal for All Aspects of Design     Hybrid Journal   (Followers: 28)
Developments in Clay Science     Full-text available via subscription   (Followers: 1)
Developments in Mineral Processing     Full-text available via subscription   (Followers: 3)
Dhaka University Journal of Science     Open Access  
Differential Equations and Dynamical Systems     Hybrid Journal   (Followers: 2)
Discrete Mathematics     Hybrid Journal   (Followers: 8)
Discrete Mathematics & Theoretical Computer Science     Open Access  
Discrete Mathematics, Algorithms and Applications     Hybrid Journal   (Followers: 2)
Discussiones Mathematicae Graph Theory     Open Access   (Followers: 1)
Dnipropetrovsk University Mathematics Bulletin     Open Access  
Doklady Mathematics     Hybrid Journal  
Duke Mathematical Journal     Full-text available via subscription   (Followers: 1)
Eco Matemático     Open Access  
Edited Series on Advances in Nonlinear Science and Complexity     Full-text available via subscription  
Electronic Journal of Graph Theory and Applications     Open Access   (Followers: 2)
Electronic Notes in Discrete Mathematics     Full-text available via subscription   (Followers: 2)
Elemente der Mathematik     Full-text available via subscription   (Followers: 3)
Energy for Sustainable Development     Hybrid Journal   (Followers: 9)
Enseñanza de las Ciencias : Revista de Investigación y Experiencias Didácticas     Open Access  
Ensino da Matemática em Debate     Open Access  
Entropy     Open Access   (Followers: 5)
ESAIM: Control Optimisation and Calculus of Variations     Full-text available via subscription   (Followers: 1)
European Journal of Combinatorics     Full-text available via subscription   (Followers: 5)
European Journal of Mathematics     Hybrid Journal   (Followers: 1)
European Scientific Journal     Open Access   (Followers: 2)
Experimental Mathematics     Hybrid Journal   (Followers: 4)
Expositiones Mathematicae     Hybrid Journal   (Followers: 2)
Facta Universitatis, Series : Mathematics and Informatics     Open Access  
Fasciculi Mathematici     Open Access  
Finite Fields and Their Applications     Full-text available via subscription   (Followers: 4)

        1 2 3 4 | Last

Journal Cover Afrika Matematika
  [SJR: 0.248]   [H-I: 6]   [1 followers]  Follow
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 1012-9405 - ISSN (Online) 2190-7668
   Published by Springer-Verlag Homepage  [2352 journals]
  • On the m -step two-parameter generalized Hermitian and skew-Hermitian
           splitting preconditioning method
    • Authors: Mehdi Bastani; Davod Khojasteh Salkuyeh
      Pages: 999 - 1010
      Abstract: In this paper, the non-Hermitian positive definite linear systems are solved via preconditioned Krylov subspace methods such as the generalized minimal residual (GMRES) method. To do so, the two-parameter generalized Hermitian and skew-Hermitian splitting (TGHSS) iteration method is applied to establish an m-step polynomial preconditioner. Some theoretical results are also given to investigate the convergence properties of the preconditioned method. Three numerical examples are presented to demonstrate the performance of the new method and to compare it with a recently proposed method.
      PubDate: 2017-12-01
      DOI: 10.1007/s13370-017-0489-5
      Issue No: Vol. 28, No. 7-8 (2017)
  • On two groups of the form $$2^{8}{:}A_{9}$$ 2 8 : A 9
    • Authors: Ayoub B. M. Basheer; Jamshid Moori
      Pages: 1011 - 1032
      Abstract: This paper is dealing with two split extensions of the form \(2^{8}{:}A_{9}.\) We refer to these two groups by \(\overline{G}_{1}\) and \(\overline{G}_{2}.\) For \(\overline{G}_{1},\) the 8-dimensional GF(2)-module is in fact the deleted permutation module for \(A_{9}.\) We firstly determine the conjugacy classes of \(\overline{G}_{1}\) and \(\overline{G}_{2}\) using the coset analysis technique. The structures of inertia factor groups were determined for the two extensions. The inertia factor groups of \(\overline{G}_{1}\) are \(A_{9},\,A_{8},\, S_{7},\,(A_{6} \times 3){:}2 \) and \((A_{5} \times A_{4}){:}2,\) while the inertia factor groups of \(\overline{G}_{2}\) are \(A_{9},\, PSL(2,8){:}3\) and \(2^{3}{:}GL(3,2).\) We then determine the Fischer matrices for these two groups and apply the Clifford–Fischer theory to compute the ordinary character tables of \(\overline{G}_{1}\) and \(\overline{G}_{2}.\) The Fischer matrices of \(\overline{G}_{1}\) and \(\overline{G}_{2}\) are all integer valued, with sizes ranging from 1 to 9 and from 1 to 4 respectively. The full character tables of \(\overline{G}_{1}\) and \(\overline{G}_{2}\) are \(84 \times 84\) and \(40 \times 40\) complex valued matrices respectively.
      PubDate: 2017-12-01
      DOI: 10.1007/s13370-017-0500-1
      Issue No: Vol. 28, No. 7-8 (2017)
  • $$({\alpha ,\beta })$$ ( α , β ) -Intuitionistic fuzzy bi-ideals of
    • Authors: Saleem Abdullah; Shah Hussain
      Pages: 1033 - 1059
      Abstract: In this article, a new generalization of intuitionsitic fuzzy bi-ideals of a semigroup considered so called \((\alpha ,\beta )\) -intuitionistic fuzzy bi-ideals, (1, 2)-ideals in a semigroup. We combine the notion of intuitionsitic fuzzy point and intuitionistic fuzzy sets to defined different types of intuitionsitic fuzzy bi-ideals of a semigroups. We investigate different properties of these notions and their relationships, particularly, we define \((\in ,\in \vee q)\) -intuitionistic fuzzy bi-ideals and (1, 2) ideals in semigroups.
      PubDate: 2017-12-01
      DOI: 10.1007/s13370-017-0501-0
      Issue No: Vol. 28, No. 7-8 (2017)
  • Ricci solitons in Sasakian manifold
    • Authors: Kanak Kanti Baishya
      Pages: 1061 - 1066
      Abstract: Recently the present author introduced the notion of generalized quasi-conformal curvature tensor which bridges conformal curvature tensor, concircular curvature tensor, projective curvature tensor and conharmonic curvature tensor. The object of the present paper is to find out curvature conditions for which Ricci solitons in Sasakian manifolds are sometimes shrinking and some other time remain expanding.
      PubDate: 2017-12-01
      DOI: 10.1007/s13370-017-0502-z
      Issue No: Vol. 28, No. 7-8 (2017)
  • Leaf number and Hamiltonian $$C_4$$ C 4 -free graphs
    • Authors: P. Mafuta
      Pages: 1067 - 1074
      Abstract: Let G be a simple 2-connected, \(C_4\) -free graph with minimum degree \(\delta (G)\ge 4\) and leaf number L(G) such that \(\delta (G)\ge \displaystyle \frac{1}{2}L(G)\) . We show that G is Hamiltonian. In addition, we provide family of graphs to show that the results are best possible for aforementioned class of graphs. The results, apart from supporting the conjecture (Graffiti.pc 190) of the computer program Graffiti.pc, instructed by DeLaVi \({\tilde{n}}\) a, provide a new sufficient condition for Hamiltonicity in \(C_4\) -free graphs.
      PubDate: 2017-12-01
      DOI: 10.1007/s13370-017-0503-y
      Issue No: Vol. 28, No. 7-8 (2017)
  • On optimal control of forward–backward stochastic differential
    • Authors: F. Baghery; N. Khelfallah; B. Mezerdi; I. Turpin
      Pages: 1075 - 1092
      Abstract: We consider a control problem where the system is driven by a decoupled as well as a coupled forward–backward stochastic differential equation. We prove the existence of an optimal control in the class of relaxed controls, which are measure-valued processes, generalizing the usual strict controls. The proof is based on some tightness properties and weak convergence on the space \(\mathcal {D}\) of càdlàg functions, endowed with the Jakubowsky S-topology. Moreover, under some convexity assumptions, we show that the relaxed optimal control is realized by a strict control.
      PubDate: 2017-12-01
      DOI: 10.1007/s13370-017-0504-x
      Issue No: Vol. 28, No. 7-8 (2017)
  • Studies on Cauchy problems for impulsive differential models involving
           higher order Riemann–Liouville fractional derivatives
    • Authors: Yuji Liu
      Pages: 1093 - 1113
      Abstract: In this article, existence results of solutions of a class of boundary value problems of nonlinear singular multi-term fractional differential models with impulses on half line involving higher order Riemann–Liouville fractional derivatives are established. Our analysis rely on a well known fixed point theorems. Examples are presented to illustrate the main theorems.
      PubDate: 2017-12-01
      DOI: 10.1007/s13370-017-0505-9
      Issue No: Vol. 28, No. 7-8 (2017)
  • Krasnosel’skii type fixed point theorems in ordered Banach spaces
    • Authors: Amina Boucenna; Smaïl Djebali; Toufik Moussaoui
      Pages: 1115 - 1129
      Abstract: The aim of this work is to present new abstract fixed point theorems in ordered Banach spaces and on Banach algebras. The main existence results generalize Krasnosel’skii’s fixed point theorem of compression and expansion to a class of \(\alpha \) -homogeneous operators and monotone operators. Two applications to nonlinear Hammerstein integral equations, one of which is of fractional order, are provided together with a numerical example.
      PubDate: 2017-12-01
      DOI: 10.1007/s13370-017-0506-8
      Issue No: Vol. 28, No. 7-8 (2017)
  • Some new explicit values of Ramanujan–Selberg continued fraction
    • Authors: Nipen Saikia; Chayanika Boruah
      Pages: 1131 - 1141
      Abstract: We use Ramanujan’s mixed modular equations to evaluate some new values of the parameter \(J_n\) involving Ramanujan’s theta-function \(f(-q)\) . The values \(J_n\) are then used to evaluate new explicit values of the Ramanujan–Selberg continued fraction.
      PubDate: 2017-12-01
      DOI: 10.1007/s13370-017-0507-7
      Issue No: Vol. 28, No. 7-8 (2017)
  • Gorenstein FI -flat dimension and relative homology
    • Authors: B. Vasudevan; R. Udhayakumar; C. Selvaraj
      Pages: 1143 - 1156
      Abstract: In this paper, we study some properties and behavior of finite Gorenstein FI-flat dimension through the methods of relative homological algebra.
      PubDate: 2017-12-01
      DOI: 10.1007/s13370-017-0508-6
      Issue No: Vol. 28, No. 7-8 (2017)
  • Fourier-Bessel Dini Lipschitz functions in the space $$L_{\alpha ,n}^{2}$$
           L α , n 2
    • Authors: S. El Ouadih; R. Daher
      Pages: 1157 - 1165
      Abstract: In this paper, using a generalized translation operator, we obtain an analog of Younis’s Theorem 5.2 in Younis (Int J Math Math Sci 9:301–312, 1986) for the generalized Fourier-Bessel transform for functions satisfying the Fourier-Bessel Dini Lipschitz condition in the space \(L_{\alpha ,n}^{2}\) .
      PubDate: 2017-12-01
      DOI: 10.1007/s13370-017-0509-5
      Issue No: Vol. 28, No. 7-8 (2017)
  • The partial r -Bell polynomials
    • Authors: Miloud Mihoubi; Mourad Rahmani
      Pages: 1167 - 1183
      Abstract: In this paper, we show that the r-Stirling numbers of both kinds, the r-Whitney numbers of both kinds, the r-Lah numbers and the r-Whitney-Lah numbers form particular cases of a family of polynomials forming a generalization of the partial Bell polynomials. We deduce the generating functions of several restrictions of these numbers. In addition, a new combinatorial interpretations is presented for the r-Whitney numbers and the r-Whitney-Lah numbers.
      PubDate: 2017-12-01
      DOI: 10.1007/s13370-017-0510-z
      Issue No: Vol. 28, No. 7-8 (2017)
  • A note on the lattice of fuzzy hyperideals of a hyperring
    • Authors: D. Bayrak; S. Yamak
      Pages: 1185 - 1192
      Abstract: Many studies have investigated lattices of fuzzy algebraic systems. One of them belongs to Borzooei et al. (Soft Comput 12:739–749, 2008) who found some properties of lattices of fuzzy algebraic structures. In this study, we solve the problem of finding necessary and sufficient conditions for distributivity and modularity of lattice of fuzzy hyperideals of a hyperring which was one of the open problems in Borzooei’s paper.
      PubDate: 2017-12-01
      DOI: 10.1007/s13370-017-0511-y
      Issue No: Vol. 28, No. 7-8 (2017)
  • Well-posedness and energy decay for Timoshenko systems with discrete time
    • Authors: Aissa Guesmia
      Pages: 1253 - 1284
      Abstract: In this paper, we consider a vibrating system of Timoshenko-type in a bounded one-dimensional domain with discrete time delay and complementary frictional damping and infinite memory controls all acting on the transversal displacement. We show that the system is well-posed in the sens of semigroup and that, under appropriate assumptions on the weights of the delay and the history data, the stability of the system holds in case of the equal-speed propagation as well as in the opposite case in spite of the presence of a discrete time delay, where the decay rate of solutions is given in terms of the smoothness of the initial data and the growth of the relaxation kernel at infinity. The results of this paper extend the ones obtained by the present author and Messaoudi in (Acta Math Sci 36:1–33, 2016) to the case of presence of discrete delay.
      PubDate: 2017-12-01
      DOI: 10.1007/s13370-017-0514-8
      Issue No: Vol. 28, No. 7-8 (2017)
  • Weakly invo-clean unital rings
    • Authors: Peter V. Danchev
      Pages: 1285 - 1295
      Abstract: We define and completely describe the structure of weakly invo-clean rings possessing identity. We show that these rings are clean but neither weakly nil-clean nor invo-clean, and thus they have some new exotic properties different to those established by Breaz et al. (J Algebra Appl 15, 2016) and Danchev (Commun Korean Math Soc 32:19–27, 2017), respectively.
      PubDate: 2017-12-01
      DOI: 10.1007/s13370-017-0515-7
      Issue No: Vol. 28, No. 7-8 (2017)
  • Hom-alternative modules and Hom–Poisson comodules
    • Authors: Ibrahima Bakayoko; Bakary Manga
      Pages: 1297 - 1311
      Abstract: In this paper we introduce modules over both left and right Hom-alternative algebras. We give some constructions of left and right Hom-alternative modules and give various properties of both, as well as examples. Then, we prove that morphisms of left alternative algebras extend to morphisms of left Hom-alternative algebras. Next, we introduce comodules over Hom–Poisson coalgebras and show that we may obtain a structure map of a comodule over a Hom–Poisson coalgebra from a given one.
      PubDate: 2017-12-01
      DOI: 10.1007/s13370-017-0516-6
      Issue No: Vol. 28, No. 7-8 (2017)
  • Quasi-graduations of modules and extensions of analytic spread
    • Authors: Pierre Kouadjo Brou; Youssouf M. Diagana
      Pages: 1313 - 1325
      Abstract: Let R be a ring and A a subring of R. Let \(h=\left( \mathcal {M} _{n}\right) _{n\in \mathbb {Z}\cup \left\{ +\infty \right\} }\) be a family of subgroups of an R-module \(\mathcal {M}\) . We say that h is an A-quasi-graduation of \(\mathcal {M}\) if for every \(p\in \mathbb {N}, \mathcal {M}_{p}\) is a sub-A-module of R with \(\mathcal {M}_{\infty }=(0)\) . We present weak notions of J-independence for different extensions of the analytic spread. We show that under some conditions they coincide with \(\lim \nolimits _{n \rightarrow +\infty }\ell _{J}(h^{(n!)},A,k)\) , where, for all integers \(p, h^{(p)} = (\mathcal {M}_{pn})_{n\in \mathbb {Z}\cup \left\{ +\infty \right\} }\) and where \(\ell _J (h^{(p)}, A, k)\) is the maximum number of elements of J which are J-independent of order k with respect to the A-quasi-graduation \(h^{(p)}\) of the R-module \(\mathcal {M}\) .
      PubDate: 2017-12-01
      DOI: 10.1007/s13370-017-0517-5
      Issue No: Vol. 28, No. 7-8 (2017)
  • Asymptotic property of the time-dependent solution of the M/G/1 queueing
           model with single working vacation and vacation interruption
    • Authors: Ehmet Kasim; Geni Gupur
      Pages: 1327 - 1348
      Abstract: In this paper we consider an M/G/1 queueing model with single working vacation and vacation interruption. By studying the spectral properties of the corresponding operator we obtain that the time-dependent solution of the model strongly converges to its steady-state solution.
      PubDate: 2017-12-01
      DOI: 10.1007/s13370-017-0518-4
      Issue No: Vol. 28, No. 7-8 (2017)
  • On special type-2 Bishop motion and Bishop Darboux rotation axes of the
           space curve
    • Authors: Ayşe Zeynep Azak; Melek Masal
      Pages: 1349 - 1355
      Abstract: We have given a generalization of one parameter special Frenet motion to type-2 Bishop motion in Euclidean 3-space \(E^3\) . Type-2 Bishop motion have been defined for space curve \(\beta \) and then type-2 Bishop Darboux vector of this motion has been calculated for fixed and moving spaces in \(E^3\) . Also, we have showed that type-2 Bishop rotation for space curves is decomposed into two simultaneous rotations. One of the axes of this simultaneous rotations is a parallel of the binormal vector of the curve, the other is the direction of the type-2 Bishop Darboux vector of the curve.
      PubDate: 2017-12-01
      DOI: 10.1007/s13370-017-0519-3
      Issue No: Vol. 28, No. 7-8 (2017)
  • Subclasses of starlike and convex functions involving Poisson distribution
    • Authors: G. Murugusundaramoorthy
      Pages: 1357 - 1366
      Abstract: The purpose of the present paper is to establish connections between various subclasses of analytic univalent functions by applying certain convolution operator involving Poisson distribution series. To be more precise,we investigate such connections with the classes of analytic univalent functions of \(\beta \) -starlike and \(\beta \) -uniformly convex functions of order \(\alpha \) in the open unit disk \({\mathbb {U}}\) . Further we point out some consequences of our main results.
      PubDate: 2017-12-01
      DOI: 10.1007/s13370-017-0520-x
      Issue No: Vol. 28, No. 7-8 (2017)
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