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Kragujevac Journal of MathematicsPublisher: Prirodno-matematički fakultet Kragujevac, KragujevacISSN: 1450-9628Issue: 45_5Date: 2021Journal Homepage Editorial BoardImpressum   Results on (Engel, Solvable, Nilpotent) Fuzzy Subpolygroups 667 - 684 Elahe Mohammadzadeh and Rajab Ali Borzooei   AbstractKeywords: Engel group; Engel polygroup; (Engel; solvable; nilpotent) fuzzy subpolygroupMSC: 43A62 20F45; 20N25 Vertex-Edge Roman Domination 685 - 698 H. Naresh Kumar and Y. B. Venkatakrishnan   AbstractKeywords: vertex-edge roman dominating set; edge dominating set; treesMSC: 05C69 Differential Subordination and Superordination for a New Differential Operator Containing Mittag-Leffler Function 699 - 708 Suhila Elhaddad and Maslina Darus   AbstractKeywords: analytic functions; starlike functions; linear operator; superordination; subordination; Mittag-Leffler functionMSC: 30C45 11M35; 30C10 Simpson's Type Inequalities via the Katugampola Fractional Integrals for $s$-Convex Functions 709 - 720 Seth Kermausuor   AbstractKeywords: Simpson's type inequalities; Hölder's inequality; $s$-convexity; Katugampola fractional integrals; Riemann--Liouville fractional integrals; Hadamard fractional integralsMSC: 26D15 26D10; 26A51; 26A33 Warped Product Pointwise Semi-Slant Submanifolds of Sasakian Manifolds 721 - 738 Ion Mihai, Siraj Uddin and Adela Mihai   AbstractKeywords: warped products; pointwise slant submanifolds; pointwise semi-slant submanifolds; Sasakian manifoldsMSC: 53C15; 53C40; 53C42 53B25 Convergence Estimates for Gupta-Srivastava Operators 739 - 749 Danyal Soybaş and Neha Malik   AbstractKeywords: Gupta-Srivastava operators; Grüss-Voronovskaya; difference of operatorsMSC: 41A36 41A30 Eigenvalues of Circulant Matrices and a Conjecture of Ryser 751 - 759 Reinhardt Euler, Luis H. Gallardo and Olivier Rahavandrainy   AbstractKeywords: circulant matrices; Hadamard matrices; eigenvalues; unit circle; cyclotomic fieldsMSC: 11B30 15B34; 11R18 Solvability for Multi-Point BVP of Nonlinear Fractional Differential Equations at Resonance with Three Dimensional Kernels 761 - 780 Zidane Baitiche, Maamar Benbachir and Kaddour Guerbati   AbstractKeywords: fractional differential equations; fractional Caputo derivative; multi-point boundary value problem; resonance; three dimensional kernels; coincidence degree theoryMSC: 34A08 34B15; 34B25 Application of the Hopf Maximum Principle to the Theory of Geodesic Mappings 781 - 786 Sergey Stepanov and Josef Mikeš   AbstractKeywords: Riemannian manifold; Einstein manifold; geodesic mapping; second order elliptic differential operator on symmetric tensors; Hopf maximum principle; vanishing theoremsMSC: 53C20; 53B20 53C21; 53C24 Boundedness of Certain System of Second Order Differential Equations 787 - 796 M. O. Omeike, A. A. Adeyanju, D. O. Adams and A. L. Olutimo   AbstractKeywords: boundedness; Lyapunov function; differential equations of second orderMSC: 34C11 Article page: 12>>

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