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FilomatPublisher: Faculty of Sciences and Mathematics, NišISSN: 0354-5180Issue: 35_4Date: 2021Journal Homepage Editorial BoardImpressum   On a quaternionic sequence with Vietoris' numbers 1065 - 1086 P Catarino and R De Almeida   AbstractKeywords: Binet’s formula; Catalan’s identity; Generating function; Quaternions; Recurrence relation; Tridiagonal matrix; Vietoris’ number sequenceMSC: 11R52; 05A10; 11B37; 05A15DOI: 10.2298/FIL2104065C Generalized inverses and solutions to related equations 1087 - 1093 Shiyin Zhao, Yue Sui and Junchao Wei   AbstractKeywords: strongly EP element; partial isometry; solutions of equationMSC: 15A09; 16U99; 16W10DOI: 10.2298/FIL2104087Z An investigation on the existence and uniqueness analysis of the optimal exercise boundary of American put option 1095 - 1105 Davood Ahmadian, Akbar Ebrahimi, Karim Ivaz and Mariyan Milev   AbstractKeywords: Optimal Exercise Boundary; Banach Fixed Point Theorem; Existence; Uniqueness; ConvergenceMSC: 91G80;M 45L05; 65R20DOI: 10.2298/FIL2104095A Quantitative estimates for Szász operators and its hybrid variant 1107 - 1114 Ekta Pandey   AbstractKeywords: Szász-Baskakov operators; Szász operators; weighted modulus of continuityMSC: 41A25; 41A30DOI: 10.2298/FIL2104107P The study on general cubic equations over p-adic fields 1115 - 1131 Mansoor Saburov, Mohd Ali Khameini Ahmad and Murat Alp   AbstractKeywords: Cubic equation; p-adic field; solvability criterion; number of rootsMSC: 11D88; 11D25; 11S05DOI: 10.2298/FIL2104115S The shrinking projection method for solving split best proximity point and equilibrium problems 1133 - 1140 Suthep Suantai and Jukrapong Tiammee   AbstractKeywords: Shrinking projection method; iterative algorithms; convergence; best proximity point; equilibrium problemsMSC: 47J25; 41A29; 47H09DOI: 10.2298/FIL2104133S Existence of positive solutions for a singular nonlinear semipositone fractional differential equations with parametric dependence 1141 - 1154 Om Kalthoum Wanassi and Faten Toumi   AbstractKeywords: Nonlinear fractional differential equation; semipositone; positive solution; Green’s functionMSC: 34A08; 34B27; 34B18DOI: 10.2298/FIL2104141W Lyapunov functions for fractional order h-difference systems 1155 - 1178 Xiang Liu, Baoguo Jia, Lynn Erbe and Allan Peterson   AbstractKeywords: Fractional order h-difference systems; stability; direct method; Lyapunov functions; Euler gamma functionMSC: 39A12; 39A70DOI: 10.2298/FIL2104155L B.-Y. Chen's inequality for pointwise CR-slant warped products in cosymplectic manifolds 1179 - 1189 Noura M Al-Houiti and Azeb Alghanemi   AbstractKeywords: CR-submanifold; pointwise-slant submanifold; CR-slant; warped products; cosymplectic manifoldsMSC: 53C05; 53C40; 53A40; 53C15DOI: 10.2298/FIL2104179A On approximation of Bernstein-Durrmeyer-type operators in movable interval 1191 - 1203 Fengfeng Wang and Dansheng Yu   AbstractKeywords: Bernstein-Durrmeyer-Type operators; movable interval; approximation rates; Voronovskaja’s asymptotic estimateMSC: 41A36; 41A25; 41A17; 41A10DOI: 10.2298/FIL2104191W Article page: 123>>

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