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Front Page FilomatPublisher: Faculty of Sciences and Mathematics, NišISSN: 0354-5180Issue: 32_18Date: 2018Journal Homepage

Positive solutions for a multi-order fractional nonlinear system with variable delays 6155 - 6166
Asma Bouaziza and Mohamed Amine Kerkerb  
AbstractKeywords: Fixed point theorem; Zima’s compactness criterion; variable delay; Caputo fractional derivative; positive solutionMSC: 26A33; 34K37DOI: 10.2298/FIL1818155B
Leaping cauchy numbers 6167 - 6176
Takao Komatsua  
AbstractKeywords: Cauchy numbers; leaping Cauchy numbers; recurrence; determinant; sums of productsMSC: 11B75; 11B37; 11B50; 11C20; 05A15; 05A19DOI: 10.2298/FIL1818167K
Iterative approximation of positive solutions for fractional boundary value problem on the half-line 6177 - 6187
Mourad Chamekh, Abdeljabbar Ghanmi and Samah Horrigue  
AbstractKeywords: Fractional differential equations; Half line; Iterative method; Numerical solutionMSC: 34A08; 30E25; 47J25DOI: 10.2298/FIL1818177C
Identification of points sources via time fractional diffusion equation 6189 - 6201
A Ghanmi, R Mdimagh and I B Saad  
AbstractKeywords: fractional diffusion equation; Inverse problem; Point Sources; Identifiability; Stability; Reciprocity gapMSC: 42A38; 42B10; 46F12; 45Q05DOI: 10.2298/FIL1818189G
The Global Behavior of a Quadratic Difference Equation 6203 - 6210
Vahidin Hadžiabdić, Midhat Mehuljić, Jasmin Bektešević and Naida Mujić  
AbstractKeywords: Basin of Attraction; Period-two solutions; Julia set; Difference equationMSC: 39A10DOI: 10.2298/FIL1818203H
Bound estimates for the derivative of driving point impedance functions 6211 - 6218
Bülent Nafi Örneka and Timur Düzenlıb  
AbstractKeywords: Analytic function; Schwarz lemma; Driving point impedance functionsMSC: 30C80; 32A10DOI: 10.2298/FIL1818211O
Addendum: Permutability Degrees of Finite Groups 6219 - 6220
AbstractKeywords: Permutability degree; dihedral groupsMSC: 20D15; 20P02; 06B23; 20D60DOI: 10.2298/FIL1818219O
Quotient operators and the open mapping theorem 6221 - 6227
Mahesh K Krishna and Sam P Johnson  
AbstractKeywords: semiclosed operator; quotient of operatorsMSC: 47A05; 47A99DOI: 10.2298/FIL1818221K
Weak Quasi-Entwining Structures 6229 - 6252
J N Alonso Álvarez, J M Fernández Vilaboa and R González Rodríguez  
AbstractKeywords: Monoidal category; magma; (co)monoid; (weak)Hopf quasigroup; (weak) quasi-entwining structure; cleft extension; Galois extensionMSC: 18D10; 16T05; 17A30; 20N05DOI: 10.2298/FIL1818229A
Korovkin type approximation theorems proved via weighted αβ-equistatistical convergence for bivariate functions 6253 - 6266
Hüseyin Aktuglua and Halil Gezerb  
AbstractKeywords: Statistical convergence; αβ statistical convergence; equistatistical convergence; weighted statistical convergence; Positive linear operators; Korovkin type approximation theorem; rates of convergenceMSC: 41A25; 41A36; 40A35DOI: 10.2298/FIL1818253A
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