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FilomatPublisher: Faculty of Sciences and Mathematics, NišISSN: 0354-5180Issue: 34_3Date: 2020Journal Homepage Editorial BoardImpressum   On upper triangular operator 2 × 2 matrices over C * -algebras 691 - 706 Stefan Ivković   AbstractKeywords: Hilbert C*- module; semi-A-Fredholm operator; A-Fredholm spectra; perturbations of spectra; essential spectra and operator matricesMSC: 47A53; 46L08DOI: 10.2298/FIL2003691I New results for a class of boundary value problems involving impulsive fractional differential equations 707 - 725 Feng-Xia Zheng   AbstractKeywords: Impulsive fractional differential equations; boundary value problems; fixed point theorems; existence and uniqueness; positive solutionsMSC: 34B18; 34B15; 34B37DOI: 10.2298/FIL2003707Z One-sided (b, c)-inverses in rings 727 - 736 Yuanyuan Ke, Jelena Višnjić and Jianlong Chen   AbstractKeywords: Generalized inverse; left (b; c)-inverse; right (b; c)-inverse; left annihilator (b; c)-inverse; right annihilator (b; c)-inverse; (b; c)-inverse; annihilator (b; c)-inverse; inverse along an element; ringMSC: 15A09; 16E50DOI: 10.2298/FIL2003727K Influence of θ-metric spaces on the diameter of rough weighted i2-limit set 737 - 750 Sanjoy Ghosal, M C Listán-García, Manasi Mandal and Mandobi Banerjee   AbstractKeywords: θ-metric space; rough weighted I2-limit set; weighted I2-cluster points setMSC: 40A35; 40B05DOI: 10.2298/FIL2003737G Generalized Simpson type inequalities involving Riemann–Liouville fractional integrals and their applications 751 - 760 Chunyan Luo and Tingsong Du   AbstractKeywords: Simpson type inequality; (s; m)-convexity; Riemann–Liouville fractional integralsMSC: 26A33; 41A55; 26D15; 26E60DOI: 10.2298/FIL2003751L Viscosity approximation methods for split common fixed point problems without prior knowledge of the operator norm 761 - 777 Pachara Jailoka and Suthep Suantai   AbstractKeywords: Split common fixed point problems; viscosity approximation methods; strong convergence; Hilbert spacesMSC: 47H09; 47J25; 90C25DOI: 10.2298/FIL2003761J Quantitative estimates for the tensor product (p,q)--Balázs-Szabados operators and associated generalized Boolean sum operators 779 - 793 Esma Yıldız Özkan   AbstractKeywords: Balázs-Szabados operators; (p; q)-calculus; rate of convergence; Boolean sum operatorsMSC: 41A25; 41A36DOI: 10.2298/FIL2003779O On a Ricci quarter-symmetric metric recurrent connection and a projective Ricci quarter-symmetric metric recurrent connection in a Riemannian manifold 795 - 806 Di Zhao, Cholyong Jen and Talyun Ho   AbstractKeywords: Ricci quarter-symmetric metric recurrent connection; Ricci quarter-symmetric metric recurrent projective connection; constant curvature; conjugate symmetryMSC: 53C20; 53D11DOI: 10.2298/FIL2003795Z Chen's improved inequality for pointwise hemi-slant warped products in Kaehler manifolds 807 - 814 Monia F Naghi, Mića S Stanković and Fatimah Alghamdi   AbstractKeywords: slant submanifolds; pointwise slant; hemi-slant; pointwise hemi-slant; mixed totally geodesic; warped product; Kaehler manifoldsMSC: 53C15; 53C40; 53C42; 53B25DOI: 10.2298/FIL2003807N An infinite family of Hadamard matrices constructed from Paley type matrices 815 - 834 Adda Farouk and Qing-Wen Wang   AbstractKeywords: Hadamard matrices; Scarpis constructions; Paley constructionsMSC: 15B34; 05B20DOI: 10.2298/FIL2003815F Article page: 123>>

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