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Kragujevac Journal of MathematicsPublisher: Prirodno-matematički fakultet Kragujevac, KragujevacISSN: 1450-9628Issue: 47_3Date: 2023Journal Homepage Editorial BoardImpressum   On the Semigroup of Bi-Ideals of an Ordered Semigroup 339 - 345 Susmita Mallick and Kalyan Hansda   AbstractKeywords: Bi-ideal; regular; Clifford; left Clifford; locally testable; left normal band; normal band; rectangular bandMSC: 20M10 06F05 $L^\infty -$Asymptotic Behavior of a Finite Element Method for a System of Parabolic Quasi-Variational Inequalities with Nonlinear Source Terms 347 - 367 Djaber Chemseddine Benchettah   AbstractKeywords: Quasi-variational inequalities; asymptotic behavior; subsolutions method; finite elements approximation; $L^\infty $-error estimateMSC: 65J15 65N30 Denumerably many Positive Solutions for Iterative System of Boundary Value Problems with $\textbfN$-Singularities on Time Scales 369 - 385 K. R. Prasad, Mahammad Khuddush and K. V. Vidyasagar   AbstractKeywords: Iterative system; time scale; singularity; homeomorphism; homomorphism; cone; Krasnoselskii's fixed point theorem; positive solutionsMSC: 34B18 34N05 Estimates for Initial Coefficients of Certain Subclasses of Bi-Close-to-Convex Analytic Functions 387 - 401 Sarbeswar Barik and Akshya Kumar Mishra   AbstractKeywords: Analytic functions; analytic continuation; univalent functions; bi-univalent functions; coefficient boundsMSC: 30C45 On Zero Free Regions for Derivatives of a Polynomial 403 - 407 Mohammad Ibrahim Mir, Ishfaq Nazir and Irfan Ahmad Wani   AbstractKeywords: Polynomials; zeros; critical points; derivative; regionMSC: 12D10 A New Extension of Banach-Caristi Theorem and its Application to Nonlinear Functional Equations 409 - 416 Nabanita Konwar, Pradip Debnath, Stojan Radenović and Hassen Aydi   AbstractKeywords: Fixed point; Banach contraction principle; nonlinear functional equation; metric space; Caristi's theoremMSC: 47H10 54H25; 54E50 Characterization of Ordered Semihypergroups by Covered Hyperideals 417 - 429 Md Firoj Ali and Noor Mohammad Khan   AbstractKeywords: Ordered semihypergroup; hyperideal; hyper $\mathcalJ$-class; covered hyperideal; maximal hyperideal; minimal hyperideal; greatest covered hyperideal; greatest hyperideal and hyperbaseMSC: 20N20; 06F05 The family of Szász-Durrmeyer Type Operators Involving Charlier Polynomials 431 - 443 Naokant Deo and Ram Pratap   AbstractKeywords: Charlier polynomials; Srivastava-Gupta operators; modulus of continuity; Ditzian-Totik modulus of smoothness; weighted modulus of continuityMSC: 41A25; 41A36 A Parameter-Based Ostrowski Type Inequality for Functions whose Derivatives Belongs to $L_p([a,b])$ Involving Multiple Points 445 - 458 Seth Kermausuor   AbstractKeywords: Ostrowski's inequality; midpoint inequality; Simpson's inequality; Montgomery identity; Hölder's inequality; parameterMSC: 26D15 26D10; 43A15 On Minimaxity and Limit of Risks Ratio of James-Stein Estimator Under the Balanced Loss Function 459 - 479 Abdenour Hamdaoui, Abdelkader Benkhaled and Mekki Terbeche   AbstractKeywords: Balanced loss function; James-Stein estimator; minimaxity; multivariate Gaussian random variable; non-central chi-square distribution; risk ratio; shrinkage estimatorMSC: 62F12 62C20; DOI Article page: 12>>

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