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  Subjects -> EDUCATION (Total: 1755 journals)
    - ADULT EDUCATION (24 journals)
    - COLLEGE AND ALUMNI (9 journals)
    - E-LEARNING (22 journals)
    - EDUCATION (1466 journals)
    - HIGHER EDUCATION (119 journals)
    - INTERNATIONAL EDUCATION PROGRAMS (4 journals)
    - ONLINE EDUCATION (28 journals)
    - SCHOOL ORGANIZATION (12 journals)
    - SPECIAL EDUCATION AND REHABILITATION (34 journals)
    - TEACHING METHODS AND CURRICULUM (37 journals)

EDUCATION (1466 journals)                  1 2 3 4 5 6 7 8 | Last

Showing 1 - 200 of 857 Journals sorted alphabetically
#Tear : Revista de Educação, Ciência e Tecnologia     Open Access   (Followers: 2)
(Pensamiento), (palabra) y obra     Open Access  
@tic. revista d'innovació educativa     Open Access  
Abant İzzet Baysal Üniversitesi Eğitim Fakültesi Dergisi     Open Access  
About Campus     Hybrid Journal   (Followers: 5)
Academic Medicine     Full-text available via subscription   (Followers: 59)
Academic Psychiatry     Full-text available via subscription   (Followers: 22)
Academic Questions     Hybrid Journal   (Followers: 7)
Academy of Educational Leadership Journal     Full-text available via subscription   (Followers: 58)
Academy of Management Learning and Education     Full-text available via subscription   (Followers: 50)
Accounting & Finance     Hybrid Journal   (Followers: 46)
Accounting Education: An International Journal     Hybrid Journal   (Followers: 17)
ACM Transactions on Computing Education (TOCE)     Hybrid Journal   (Followers: 4)
Across the Disciplines     Open Access   (Followers: 8)
Acta Didactica Norge     Open Access  
Acta Scientiarum. Education     Open Access  
Acta Technologica Dubnicae     Open Access  
Action in Teacher Education     Hybrid Journal   (Followers: 57)
Action Learning: Research and Practice     Hybrid Journal   (Followers: 39)
Action Research     Hybrid Journal   (Followers: 40)
Active Learning in Higher Education     Hybrid Journal   (Followers: 306)
Actualidades Pedagógicas     Open Access  
Administration & Society     Hybrid Journal   (Followers: 12)
Administrative Science Quarterly     Full-text available via subscription   (Followers: 148)
Adult Education Quarterly     Hybrid Journal   (Followers: 144)
Advanced Education     Open Access   (Followers: 6)
Advances in Health Sciences Education     Hybrid Journal   (Followers: 22)
Advances in High Energy Physics     Open Access   (Followers: 19)
Advances in School Mental Health Promotion     Partially Free   (Followers: 9)
AERA Open     Open Access   (Followers: 6)
Africa Education Review     Partially Free   (Followers: 24)
African Journal of Chemical Education     Open Access   (Followers: 2)
African Journal of Educational Studies in Mathematics and Sciences     Full-text available via subscription   (Followers: 5)
African Journal of Health Professions Education     Open Access   (Followers: 5)
African Journal of Research in Mathematics, Science and Technology Education     Full-text available via subscription   (Followers: 8)
Agora     Full-text available via subscription   (Followers: 3)
AGORA Magazine     Open Access  
Ahmad Dahlan Journal of English Studies     Open Access   (Followers: 1)
AIDS Education and Prevention     Full-text available via subscription   (Followers: 7)
Akadémiai Értesítö     Full-text available via subscription  
AKSIOMA Journal of Mathematics Education     Open Access   (Followers: 1)
Al-Jabar : Jurnal Pendidikan Matematika     Open Access  
Alexandria : Revista de Educação em Ciência e Tecnologia     Open Access  
Alsic     Open Access   (Followers: 19)
Alteridad     Open Access  
Amasya Universitesi Egitim Fakültesi Dergisi     Open Access  
American Annals of the Deaf     Full-text available via subscription   (Followers: 13)
American Biology Teacher     Full-text available via subscription   (Followers: 13)
American Educational Research Journal     Hybrid Journal   (Followers: 142)
American Journal of Business Education     Open Access   (Followers: 10)
American Journal of Distance Education     Hybrid Journal   (Followers: 29)
American Journal of Education     Full-text available via subscription   (Followers: 174)
American Journal of Educational Research     Open Access   (Followers: 57)
American Journal of Health Education     Hybrid Journal   (Followers: 29)
American Journal of Physics     Full-text available via subscription   (Followers: 54)
ANALES de la Universidad Central del Ecuador     Open Access   (Followers: 2)
Annali dell'Universita di Ferrara     Hybrid Journal  
Annals of Dyslexia     Hybrid Journal   (Followers: 9)
Annals of Modern Education     Full-text available via subscription   (Followers: 3)
Apertura. Revista de innovación educativa‏     Open Access   (Followers: 2)
Applied Environmental Education & Communication     Hybrid Journal   (Followers: 14)
Applied Measurement in Education     Hybrid Journal   (Followers: 9)
Arabia     Open Access  
Art Design & Communication in Higher Education     Hybrid Journal   (Followers: 19)
Arts and Humanities in Higher Education     Hybrid Journal   (Followers: 33)
Arts Education Policy Review     Hybrid Journal   (Followers: 4)
ASHE Higher Education Reports     Hybrid Journal   (Followers: 14)
Asia Pacific Education Review     Hybrid Journal   (Followers: 10)
Asia Pacific Journal of Education     Hybrid Journal   (Followers: 19)
Asia-Pacific Education Researcher     Hybrid Journal   (Followers: 11)
Asia-Pacific Journal of Health, Sport and Physical Education     Hybrid Journal   (Followers: 9)
Asia-Pacific Journal of Teacher Education     Hybrid Journal   (Followers: 19)
Asian Association of Open Universities Journal     Open Access  
Asian Education and Development Studies     Hybrid Journal   (Followers: 5)
Asian Journal of English Language Teaching     Full-text available via subscription   (Followers: 11)
Asian Journal of Legal Education     Full-text available via subscription   (Followers: 5)
ASp     Open Access   (Followers: 2)
Assessing Writing     Hybrid Journal   (Followers: 11)
Assessment & Evaluation in Higher Education     Hybrid Journal   (Followers: 127)
Assessment for Effective Intervention     Hybrid Journal   (Followers: 15)
Assessment in Education: Principles, Policy & Practice     Hybrid Journal   (Followers: 36)
Assessment Update     Hybrid Journal   (Followers: 4)
AStA Wirtschafts- und Sozialstatistisches Archiv     Hybrid Journal   (Followers: 5)
At-Ta'dib Jurnal Kependidikan Islam     Open Access  
At-Turats     Open Access  
Athenea Digital     Open Access  
Aula Abierta     Open Access   (Followers: 1)
Australasian Journal of Educational Technology     Open Access   (Followers: 16)
Australasian Journal of Gifted Education     Full-text available via subscription   (Followers: 4)
Australasian Marketing Journal (AMJ)     Hybrid Journal   (Followers: 8)
Australian Art Education     Full-text available via subscription   (Followers: 6)
Australian Educational and Developmental Psychologist, The     Full-text available via subscription   (Followers: 7)
Australian Educational Computing     Open Access  
Australian Educational Researcher     Hybrid Journal   (Followers: 21)
Australian Journal of Adult Learning     Full-text available via subscription   (Followers: 13)
Australian Journal of Career Development     Hybrid Journal   (Followers: 2)
Australian Journal of Dyslexia and Learning Difficulties     Full-text available via subscription   (Followers: 8)
Australian Journal of Education     Hybrid Journal   (Followers: 32)
Australian Journal of Learning Difficulties     Hybrid Journal   (Followers: 4)
Australian Journal of Music Education     Full-text available via subscription   (Followers: 3)
Australian Journal of Public Administration     Hybrid Journal   (Followers: 406)
Australian Journal of Teacher Education     Open Access   (Followers: 22)
Australian Mathematics Teacher, The     Full-text available via subscription   (Followers: 7)
Australian Primary Mathematics Classroom     Full-text available via subscription   (Followers: 2)
Australian Screen Education Online     Full-text available via subscription   (Followers: 2)
Australian TAFE Teacher     Full-text available via subscription   (Followers: 3)
Australian Universities' Review, The     Full-text available via subscription   (Followers: 4)
Autism     Hybrid Journal   (Followers: 194)
Avaliação : Revista da Avaliação da Educação Superior (Campinas)     Open Access  
Azalea: Journal of Korean Literature & Culture     Full-text available via subscription   (Followers: 4)
Balkan Region Conference on Engineering and Business Education     Open Access   (Followers: 1)
BELIA : Early Childhood Education Papers     Open Access   (Followers: 4)
BELT - Brazilian English Language Teaching Journal     Open Access   (Followers: 5)
Berkeley Review of Education     Open Access   (Followers: 5)
Biblioteca Escolar em Revista     Open Access  
Biblioteka i Edukacja     Open Access   (Followers: 4)
Bildung und Erziehung     Hybrid Journal   (Followers: 2)
Bioedukasi : Jurnal Pendidikan Biologi FKIP UM Metro     Open Access  
Biosaintifika : Journal of Biology & Biology Education     Open Access   (Followers: 7)
Biosfer : Jurnal Biologi dan Pendidikan Biologi     Open Access  
BMC Medical Education     Open Access   (Followers: 41)
BMJ Simulation & Technology Enhanced Learning     Full-text available via subscription   (Followers: 7)
BoEM - Boletim online de Educação Matemática     Open Access  
Boletim Cearense de Educação e História da Matemática     Open Access  
Boletim de Educação Matemática     Open Access  
British Educational Research Journal     Hybrid Journal   (Followers: 173)
British Journal of Educational Studies     Hybrid Journal   (Followers: 168)
British Journal of Educational Technology     Hybrid Journal   (Followers: 130)
British Journal of Religious Education     Hybrid Journal   (Followers: 8)
British Journal of Sociology of Education     Hybrid Journal   (Followers: 49)
British Journal of Special Education     Hybrid Journal   (Followers: 43)
British Journal of Visual Impairment     Hybrid Journal   (Followers: 12)
Brookings Trade Forum     Full-text available via subscription   (Followers: 3)
Business, Management and Education     Open Access   (Followers: 18)
Caderno Brasileiro de Ensino de Física     Open Access  
Caderno Intersabares     Open Access  
Cadernos CEDES     Open Access   (Followers: 1)
Cadernos de Educação     Open Access  
Cadernos de Educação, Tecnologia e Sociedade     Open Access  
Cadernos de Pesquisa     Open Access  
Cadernos de Pesquisa     Open Access   (Followers: 2)
Cadernos de Pesquisa em Educação     Open Access   (Followers: 1)
Cadmo     Full-text available via subscription  
Cahiers de la recherche sur l'éducation et les savoirs     Open Access   (Followers: 4)
Calidad en la educación     Open Access   (Followers: 1)
Cambridge Journal of Education     Hybrid Journal   (Followers: 94)
Campus Legal Advisor     Hybrid Journal   (Followers: 2)
Campus Security Report     Hybrid Journal  
Canadian and International Education     Open Access   (Followers: 9)
Canadian Journal for New Scholars in Education/ Revue canadienne des jeunes chercheures et chercheurs en éducation     Open Access   (Followers: 8)
Canadian Journal for the Scholarship of Teaching and Learning     Open Access   (Followers: 14)
Canadian Journal of Education : Revue canadienne de l'éducation     Open Access   (Followers: 7)
Canadian Journal of Higher Education     Open Access   (Followers: 23)
Canadian Journal of Learning and Technology / La revue canadienne de l’apprentissage et de la technologie     Open Access   (Followers: 15)
Canadian Journal of School Psychology     Hybrid Journal   (Followers: 10)
Canadian Journal of Science, Mathematics and Technology Education     Hybrid Journal   (Followers: 20)
Career Development and Transition for Exceptional Individuals     Hybrid Journal   (Followers: 7)
Catalejos. Revista sobre lectura, formación de lectores y literatura para niños     Open Access  
Catharsis : Journal of Arts Education     Open Access  
CELE Exchange, Centre for Effective Learning Environments     Full-text available via subscription   (Followers: 1)
Cendekia : Jurnal Kependidikan dan Kemasyarakatan     Open Access  
Change: The Magazine of Higher Learning     Hybrid Journal   (Followers: 15)
Changing English: Studies in Culture and Education     Hybrid Journal   (Followers: 6)
Charrette     Open Access  
Chemical Engineering Education     Full-text available via subscription  
Chemistry Education Research and Practice     Free   (Followers: 5)
Chemistry in Education     Open Access   (Followers: 9)
Chi'e : Journal of Japanese Learning and Teaching     Open Access   (Followers: 2)
Child Language Teaching and Therapy     Hybrid Journal   (Followers: 27)
Child Psychiatry & Human Development     Hybrid Journal   (Followers: 9)
Childhood Education     Hybrid Journal   (Followers: 16)
Children's Literature in Education     Hybrid Journal   (Followers: 8)
Chinese Education & Society     Full-text available via subscription   (Followers: 2)
Christian Higher Education     Hybrid Journal   (Followers: 2)
Christian Perspectives in Education     Open Access   (Followers: 7)
Ciência & Educação (Bauru)     Open Access  
Ciência & Saúde Coletiva     Open Access   (Followers: 2)
Ciencia en Desarrollo     Open Access  
Ciencias Sociales y Educación     Open Access   (Followers: 2)
Citizenship, Social and Economics Education     Full-text available via subscription   (Followers: 5)
Classroom Discourse     Hybrid Journal   (Followers: 8)
Clinical Child and Family Psychology Review     Hybrid Journal   (Followers: 7)
Clio y Asociados     Open Access  
CME     Hybrid Journal   (Followers: 1)
Coaching: An International Journal of Theory, Research and Practice     Hybrid Journal   (Followers: 9)
Cogent Education     Open Access   (Followers: 1)
College Athletics and The Law     Hybrid Journal   (Followers: 1)
College Teaching     Hybrid Journal   (Followers: 12)
Colóquio Internacional de Educação e Seminário de Estratégias e Ações Multidisciplinares     Open Access  
Communication Disorders Quarterly     Hybrid Journal   (Followers: 14)
Communication Education     Hybrid Journal   (Followers: 19)
Communication Methods and Measures     Hybrid Journal   (Followers: 11)
Community College Journal of Research and Practice     Hybrid Journal   (Followers: 8)
Community College Review     Hybrid Journal   (Followers: 7)
Community Development     Hybrid Journal   (Followers: 18)
Community Literacy Journal     Partially Free   (Followers: 2)
Comparative Education     Hybrid Journal   (Followers: 29)
Comparative Education Review     Full-text available via subscription   (Followers: 33)
Comparative Professional Pedagogy     Open Access   (Followers: 3)
Compare: A journal of comparative education     Hybrid Journal   (Followers: 19)

        1 2 3 4 5 6 7 8 | Last

Journal Cover Annali dell'Universita di Ferrara
  [SJR: 0.504]   [H-I: 14]   [0 followers]  Follow
    
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 0430-3202 - ISSN (Online) 1827-1510
   Published by Springer-Verlag Homepage  [2352 journals]
  • Remarks on the normal bundles of generic rational curves
    • Authors: Alberto Alzati; Riccardo Re
      Pages: 211 - 220
      Abstract: Abstract In this note we give a different proof of Sacchiero’s theorem about the splitting type of the normal bundle of a generic rational curve. Moreover we discuss the existence and the construction of smooth monomial curves having generic type of the normal bundle.
      PubDate: 2017-11-01
      DOI: 10.1007/s11565-017-0276-0
      Issue No: Vol. 63, No. 2 (2017)
       
  • Twisting Hopf algebras from cocycle deformations
    • Authors: Nicolás Andruskiewitsch; Agustín García Iglesias
      Pages: 221 - 247
      Abstract: Abstract Let H be a Hopf algebra. Any finite-dimensional lifting of \(V\in {}^{H}_{H}\mathcal {YD}\) arising as a cocycle deformation of \(A={\mathfrak {B}}(V)\#H\) defines a twist in the Hopf algebra \(A^*\) , via dualization. We follow this recipe to write down explicit examples and show that it extends known techniques for defining twists. We also contribute with a detailed survey about twists in braided categories.
      PubDate: 2017-11-01
      DOI: 10.1007/s11565-016-0264-9
      Issue No: Vol. 63, No. 2 (2017)
       
  • Explicit div-curl inequalities in bounded and unbounded domains of
           $${{\mathbb {R}}}^3$$ R 3
    • Authors: Tahar Zamene Boulmezaoud; Keltoum Kaliche; Nabil Kerdid
      Pages: 249 - 276
      Abstract: Abstract We give a constructive proof of some functional inequalities related to the div and curl operators in bounded and unbounded domains of \({{\mathbb {R}}}^3\) . Our new innovation consists in giving explicit constants in several geometric configurations. These inequalities are of a first use in solving div-curl systems and vector potential problems arising in physics.
      PubDate: 2017-11-01
      DOI: 10.1007/s11565-016-0266-7
      Issue No: Vol. 63, No. 2 (2017)
       
  • An extension criterion for the local in time solution of the chemotaxis
           Navier–Stokes equations in the critical Besov spaces
    • Authors: Hi Jun Choe; Bataa Lkhagvasuren
      Pages: 277 - 288
      Abstract: Abstract We consider the Keller–Segel model coupled with the incompressible Navier–Stokes equations in the dimension three. Based on the wellposedness result in the critical Besov spaces, we present a result on the extension criterion for the local in time solution in the same functional setting, which is a new result for the model.
      PubDate: 2017-11-01
      DOI: 10.1007/s11565-016-0265-8
      Issue No: Vol. 63, No. 2 (2017)
       
  • Partition identities arising from Somos’s theta function identities
    • Authors: B. R. Srivatsa Kumar; R. G. Veeresha
      Pages: 303 - 313
      Abstract: Abstract In this paper, we establish certain partition identities for theta function identities of level 14 discovered by M. Somos.
      PubDate: 2017-11-01
      DOI: 10.1007/s11565-016-0261-z
      Issue No: Vol. 63, No. 2 (2017)
       
  • Some elementary examples of quartics with finite-dimensional motive
    • Authors: Robert Laterveer
      Pages: 315 - 321
      Abstract: Abstract This small note contains some easy examples of quartic hypersurfaces that have finite-dimensional motive. As an illustration, we verify a conjecture of Voevodsky (concerning smash-equivalence) for some of these special quartics.
      PubDate: 2017-11-01
      DOI: 10.1007/s11565-016-0263-x
      Issue No: Vol. 63, No. 2 (2017)
       
  • Height estimates and half-space type theorems in weighted product spaces
           with nonnegative Bakry–Émery–Ricci curvature
    • Authors: Henrique F. de Lima; Márcio S. Santos
      Pages: 323 - 332
      Abstract: Abstract We prove height estimates concerning compact hypersurfaces with nonzero constant weighted mean curvature and whose boundary is contained into a slice of a weighted product space of nonnegative Bakry–Émery–Ricci curvature. As applications of our estimates, we obtain half-space type results related to complete noncompact hypersurfaces properly immersed in such an ambient space.
      PubDate: 2017-11-01
      DOI: 10.1007/s11565-016-0268-5
      Issue No: Vol. 63, No. 2 (2017)
       
  • On the qualitative behaviour of solutions to certain second order
           nonlinear differential equation with delay
    • Authors: B. S. Ogundare; A. T. Ademola; M. O. Ogundiran; O. A. Adesina
      Pages: 333 - 351
      Abstract: Abstract This paper establishes explicit criteria in form of inequalities for all solutions to a class of second order nonlinear differential equations (with and without delay) to be bounded, ultimately bounded and globally asymptotically stable using Lyapunov second method. Obtained results are new and they complement existing results in the literature. Some examples are given to illustrate the main results.
      PubDate: 2017-11-01
      DOI: 10.1007/s11565-016-0262-y
      Issue No: Vol. 63, No. 2 (2017)
       
  • A regularity criterion for 3D Navier–Stokes equations via one component
           of velocity and vorticity
    • Authors: Myong-Hwan Ri
      Pages: 353 - 363
      Abstract: Abstract In this paper we show that a Leray–Hopf weak solution u to 3D Navier–Stokes initial value problem is smooth if there is some \(\alpha \in {{{\mathbb {R}}}}, \alpha \ne 0,\) such that \(\alpha u_3+(-\Delta )^{-1/2}\omega _3\) is suitably smooth, where \(\omega =\text {curl}\,u\) .
      PubDate: 2017-11-01
      DOI: 10.1007/s11565-017-0274-2
      Issue No: Vol. 63, No. 2 (2017)
       
  • On the growth and approximation of entire functions represented by
           Laplace–Stieltjes’ transformation
    • Authors: Chhaya Singhal; G. S. Srivastava
      Pages: 365 - 376
      Abstract: Abstract In the present paper, we obtain the characterization of various growth parameters of an entire function F(s) represented by Laplace–Stieltjes transformation in terms of the rate of decrease of \(E_n ( {F,\beta } ),\) where \(E_n ( {F,\beta } )\) represents the error in approximating the function F(s) by exponential polynomials.
      PubDate: 2017-11-01
      DOI: 10.1007/s11565-017-0272-4
      Issue No: Vol. 63, No. 2 (2017)
       
  • Some singular value and unitarily invariant norm inequalities for Hilbert
           space operators
    • Authors: A. Taghavi; V. Darvish; H. M. Nazari; S. S. Dragomir
      Pages: 377 - 389
      Abstract: Abstract In this paper, we prove some singular value inequalities for sum and product of operators. Also, we obtain several generalizations of recent inequalities. Moreover, as applications we establish some unitarily invariant norm and trace inequalities for operators which provide refinements of previous results.
      PubDate: 2017-11-01
      DOI: 10.1007/s11565-017-0271-5
      Issue No: Vol. 63, No. 2 (2017)
       
  • Skew n -derivation on prime and semi prime rings
    • Authors: V. K. Yadav; R. K. Sharma
      Pages: 391 - 402
      Abstract: Abstract Let \(n \ge 2\) be a fixed integer, R be a noncommutative n!-torsion free ring and I be any non zero ideal of R. In this paper we have proved the following results; (i) If R is a prime ring and there exists a symmetric skew n-derivation \(D: R^n \rightarrow R\) associated with the automorphism \(\sigma \) on R,  such that the trace function \(\delta : R \rightarrow R \) of D satisfies \([\delta (x), \sigma (x)] =0\) , for all \(x\in I,\) then \(D=0;\,\) (ii) If R is a semi prime ring and the trace function \(\delta ,\) commuting on I,  satisfies \([\delta (x), \sigma (x)]\in Z\) , for all \(x \in I,\) then \([\delta (x), \sigma (x)] = 0 \) , for all \(x \in I.\) Moreover, we have proved some annihilating conditions for algebraic identity involving multiplicative(generalized) derivation.
      PubDate: 2017-11-01
      DOI: 10.1007/s11565-016-0259-6
      Issue No: Vol. 63, No. 2 (2017)
       
  • On local Gevrey regularity for Gevrey vectors of subelliptic sums of
           squares: an elementary proof of a sharp Gevrey Kotake–Narasimhan theorem
           
    • Authors: David S. Tartakoff
      Abstract: Abstract We study the regularity of Gevrey vectors for Hörmander operators $$\begin{aligned} P = \sum _{j=1}^m X_j^2 + X_0 + c \end{aligned}$$ where the \(X_j\) are real vector fields and c(x) is a smooth function, all in Gevrey class \(G^{s}.\) The principal hypothesis is that P satisfies the subelliptic estimate: for some \(\varepsilon >0, \; \exists \,C\) such that $$\begin{aligned} \Vert v\Vert _{\varepsilon }^2 \le C\left( (Pv, v) + \Vert v\Vert _0^2\right) \qquad \forall v\in C_0^\infty . \end{aligned}$$ We prove directly (without the now familiar use of adding a variable t and proving suitable hypoellipticity for \(Q=-D_t^2-P\) and then, using the hypothesis on the iterates of P on u,  constructing a homogeneous solution U for Q whose trace on \(t=0\) is just u) that for \(s\ge 1,\)   \(G^s(P,\Omega _0) \subset G^{s/\varepsilon }(\Omega _0);\) that is, $$\begin{aligned}&\forall K\Subset \Omega _0, \;\exists C_K: \Vert P^j u\Vert _{L^2(K)}\le C_K^{j+1} (2j)!^s, \;\forall j\\&\quad \implies \forall K'\Subset \Omega _0, \;\exists \tilde{C}_{K'}:\,\Vert D^\ell u\Vert _{L^2(K')} \le \tilde{C}_{K'}^{\ell +1} \ell !^{s/\varepsilon }, \;\forall \ell . \end{aligned}$$ In other words, Gevrey growth of derivatives of u as measured by iterates of P yields Gevrey regularity for u in a larger Gevrey class. When \(\varepsilon =1,\) P is elliptic and so we recover the original Kotake–Narasimhan theorem (Kotake and Narasimhan in Bull Soc Math Fr 90(12):449–471, 1962), which has been studied in many other classes, including ultradifferentiable functions (Boiti and Journet in J Pseudo-Differ Oper Appl 8(2):297–317, 2017). We are indebted to M. Derridj for multiple conversations over the years.
      PubDate: 2017-08-29
      DOI: 10.1007/s11565-017-0293-z
       
  • Existence of positive periodic solutions of nonlinear neutral differential
           systems with variable delays
    • Authors: Hocine Gabsi; Abdelouaheb Ardjouni; Ahcene Djoudi
      Abstract: Abstract In this work we use some mixed techniques of the Mawhin coincidence degree theory and fixed point theorem to prove the existence of positive periodic solutions of delay systems. As a consequence, we offer existence criteria and sufficient conditions for existence of periodic solutions to the systems with feedback control. When these results are applied to some special delay bio-mathematics models, some new results are obtained, and many known results are improved.
      PubDate: 2017-08-02
      DOI: 10.1007/s11565-017-0292-0
       
  • q - Lupas Kantorovich operators based on Polya distribution
    • Authors: P. N. Agrawal; Pooja Gupta
      Abstract: Abstract The purpose of the present paper is to introduce a Kantorovich modification of the q-analogue of the Stancu operators defined by Nowak (J Math Anal Appl 350:50–55, 2009). We study a local and a direct approximation theorem by means of the Ditzian–Totik modulus of smoothness. Further A-statistical convergence properties of these operators are investigated. Next, a bivariate generalization of these operators is introduced and its rate of convergence is discussed with the aid of the partial and complete modulus of continuity and the Peetre‘s K-functional.
      PubDate: 2017-07-01
      DOI: 10.1007/s11565-017-0291-1
       
  • Characterization of some derivations on von Neumann algebras via left
           centralizers
    • Authors: A. Hosseini
      Abstract: Abstract Let \(\mathfrak {M}\) be a von Neumann algebra, and let \(\mathfrak {T}:\mathfrak {M} \rightarrow \mathfrak {M}\) be a bounded linear map satisfying \(\mathfrak {T}(P^{2}) = \mathfrak {T}(P)P + \Psi (P,P)\) for each projection P of \(\mathfrak {M}\) , where \(\Psi :\mathfrak {M} \times \mathfrak {M} \rightarrow \mathfrak {M}\) is a bi-linear map. If \(\Psi \) is a bounded l-semi Hochschild 2-cocycle, then \(\mathfrak {T}\) is a left centralizer associated with \(\Psi \) . By applying this conclusion, we offer a characterization of left \(\sigma \) -centralizers, generalized derivations and generalized \(\sigma \) -derivations on von Neumann algebras. Moreover, it is proved that if \(\mathfrak {M}\) is a commutative von Neumann algebra and \(\sigma :\mathfrak {M} \rightarrow \mathfrak {M}\) is an endomorphism, then every bi- \(\sigma \) -derivation \(D:\mathfrak {M} \times \mathfrak {M} \rightarrow \mathfrak {M}\) is identically zero.
      PubDate: 2017-06-21
      DOI: 10.1007/s11565-017-0290-2
       
  • On the existence of the biharmonic Green kernels and the adjoint
           biharmonic functions
    • Authors: Abderrahim Aslimani; Imad El Ghazi; Mohamed El Kadiri; Sabah Haddad
      Abstract: Abstract We study the existence and the regularity of the biharmonic Green kernel in a Brelot biharmonic space whose associated harmonic spaces have Green kernels. We show by some examples that this kernel does not always exist. We then introduce and study the adjoint of the given biharmonic space. This study was initiated by Smyrnelis, however, it seems that several results were incomplete and we clarify them here.
      PubDate: 2017-06-20
      DOI: 10.1007/s11565-017-0289-8
       
  • Bézier variant of the Jakimovski–Leviatan–Păltănea operators based
           on Appell polynomials
    • Authors: Meenu Goyal; P. N. Agrawal
      Abstract: Abstract In this paper, we introduce the Bézier variant of the Jakimovski–Leviatan–Păltănea operators based on Appell polynomials. We establish some local results, a direct approximation theorem by means of the Ditzian–Totik modulus of smoothness and also study the rate of convergence for the functions having a derivative of bounded variation for these operators.
      PubDate: 2017-06-08
      DOI: 10.1007/s11565-017-0288-9
       
  • Estimates of anisotropic Sobolev spaces with mixed norms for the Stokes
           system in a half-space
    • Authors: Tongkeun Chang; Kyungkeun Kang
      Abstract: Abstract We are concerned with the non-stationary Stokes system with non-homogeneous external force and non-zero initial data in \({\mathbb {R}}^n_+ \times (0,T)\) . We obtain new estimates of solutions including pressure in terms of mixed anisotropic Sobolev spaces. As an application, some anisotropic Sobolev estimates are presented for weak solutions of the Navier–Stokes equations in a half-space in dimension three.
      PubDate: 2017-06-06
      DOI: 10.1007/s11565-017-0287-x
       
  • New P – Q mixed modular equations and their applications
    • Authors: M. S. Mahadeva Naika; B. Hemanthkumar; S. Chandankumar
      Abstract: Abstract In his second notebook, Ramanujan recorded total of seven P–Q modular equations involving theta-function \(f(-q)\) with moduli of orders 1, 3, 5 and 15. In this paper, modular equations analogous to those recorded by Ramanujan are obtained for higher orders. As a consequence, several values of quotients of theta-function are evaluated. The cubic singular modulus is evaluated at \(q=\exp (-2\pi \sqrt{n/3})\) for \(n\in \{5k, 1/5k, 5/k, k/5\}\) , where \(k\in \{4,7,16\}\) .
      PubDate: 2017-05-22
      DOI: 10.1007/s11565-017-0286-y
       
 
 
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