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Front Page Publications de l'Institut MathématiquePublisher: Matematički institut SANU, BeogradISSN: 0350-1302Issue: (N.S.) 99 (113)Date: 2016Journal Homepage

A Note on Gautschi's Inequality and Application to Wallis' and Stirling's Formula 121 - 124
Martin Lukarevski  
AbstractKeywords: Gautschi's inequality; Gamma function; Stirling's approximation; Wallis' productMSC: 41A60DOI: 10.2298/PIM150430027L
On Avakumović's Theorem for Generalized Thomas--Fermi Differential Equations 125 - 137
Jaroslav Jaroš and Kusano Takaŝi  
AbstractKeywords: generalized Thomas--Fermi differential equation; Avakumović's theorem; positive solutions; asymptotic behavior; regularly varying functionsMSC: 34C11 26A12DOI: 10.2298/PIM1613125J
Approximations of Periodic Functions by Analogue of Zygmund Sums in the Spaces $\boldsymbol{L^{p(\cdot)}}$ 155 - 163
Stanislav Chaichenko  
AbstractKeywords: Lebesgue spaces with variable exponent; analogue of Zygmund sums; $(\psi;\beta)$-derivativeMSC: 46E30; 42A10; 41A17; 41A20; 41A25DOI: 10.2298/PIM1613155C
Umbral Interpolation 165 - 175
Francesco Aldo Costabile and Elisabetta Longo  
AbstractKeywords: Umbral calculus; Sheffer polynomials; interpolationMSC: 11B83; 65F40DOI: 10.2298/PIM1613165C
Context-Freeness of the Languages of Schützenberger Automata of HNN-Extensions of Finite Inverse Semigroups 177 - 191
Mohammed Abu Ayyash and Emanuele Rodaro  
AbstractKeywords: inverse semigroup; Schützenberger automaton; context-free languageMSC: 20M18; 20M35; 68Q45DOI: 10.2298/PIM141227016A
NSE Characterization of the Simple Group $L_2(3^n)$ 193 - 201
Hosein Parvizi Mosaed, Ali Iranmanesh and Abolfazl Tehranian  
AbstractKeywords: Element order; set of the numbers of elements of the same order; projective special linear groupMSC: 20D60 20D06DOI: 10.2298/PIM141220015M
Vertex Decomposable Graph 203 - 209
N. Hajisharifi and S. Yassemi  
AbstractKeywords: vertex decomposable; Cohen--MacaulayMSC: 13F55; 05E40 05C70; 05C38DOI: 10.2298/PIM1613203H
Reverse Hölder Inequality and its Applications 211 - 216
Chang-Jian Zhao and Wing Sum Cheung  
AbstractKeywords: Hölder's inequality; Radon's inequality; Jensen's inequality; power mean inequalityMSC: 26D15DOI: 10.2298/PIM1613211Z
Maximal Tychonoff Spaces and Normal Isolator Covers 217 - 225
C. K. Basu and S. S. Mandal  
AbstractKeywords: star refinement; refinement; normally open cover; stronger topology; maximal uniformizable; extremally disconnectedMSC: 54D05; 54E15; 54E99DOI: 10.2298/PIM1613217B
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