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FilomatPublisher: Faculty of Sciences and Mathematics, NišISSN: 0354-5180Issue: 35_15Date: 2021Journal Homepage Editorial BoardImpressum   Hopkins-levitzki theorem for Krasner hyperrings 4963 - 4970 S Ostadhadi-Dehkordi and K P Shum   AbstractKeywords: Noetherian(Artinian) hyperring; regular relation; strongly regular relation; complete partMSC: 13E05; 13E10; 16Y99DOI: 10.2298/FIL2115963O Analysis of a tritrophic food chain model with fear effect incorporating prey refuge 4971 - 4999 Sangeeta Saha and G P Samanta   AbstractKeywords: Fear effect; Holling type-III functional response; Beddington-DeAngelis functional response; Bifurcations; PersistenceMSC: 92B05; 92D25; 92D40DOI: 10.2298/FIL2115971S Certain results of conformal and * -conformal Ricci soliton on para-cosymplectic and para-Kenmotsu manifolds 5001 - 5015 Sumanjit Sarkar, Santu Dey and Xiaomin Chen   AbstractKeywords: Ricci flow; conformal Ricci soliton; ∗-conformal Ricci soliton; para-Kenmotsu manifold; para-cosymplectic manifoldMSC: 53C15; 53C21; 53C25; 53E20DOI: 10.2298/FIL2115001S On some enriched contractions in Banach spaces and an application 5017 - 5029 Pratikshan Mondal, Hiranmoy Garai and Lakshmi Kanta Dey   AbstractKeywords: Banach spaces; enriched A-contraction; enriched A′-contraction; well-posedness; limit shadowing propertyMSC: 47H05; 47H10; 54H25DOI: 10.2298/FIL2115017M A note on evolution equation on manifold 5031 - 5043 Allaberen Ashyralyev, Yasar Sozen and Fatih Hezenci   AbstractKeywords: Differential equations on manifolds; well-posedness; self-adjoint positive definite operatorMSC: 58Jxx; 58J32; 58J99DOI: 10.2298/FIL2115031A Some mathematical properties of the geometric–arithmetic index/coindex of graphs 5045 - 5057 S Stankov, M Matejić, I Milovanović and E Milovanović   AbstractKeywords: Topological indices; vertex degree; geometric–arithmetic index/coindexMSC: 05C12; 05C50; 15A18DOI: 10.2298/FIL2115045S Global optimal solutions of a system of differential equations via measure of noncompactness 5059 - 5071 Moosa Gabeleh and Jack Markin   AbstractKeywords: Best proximity point; condensing operator; system of differential equationsMSC: 47H09; 49J27; 49A34DOI: 10.2298/FIL2115059G New topologies from obtained operators via weak semi-local function and some comparisons 5073 - 5081 Ferit Yalaz and Aynur Keskin Kaymakci   AbstractKeywords: Ideal topological spaces; local function; local closure function; weak semi-local function; extremally disconnected spaces; hyperconnected spacesMSC: 54A10; 54A05; 54G05; 54A99DOI: 10.2298/FIL2115073Y Cline's formula and Jacobson's lemma for g-Drazin inverse 5083 - 5091 Huanyin Chen and Marjan Sheibani Abdolyousefi   AbstractKeywords: Cline’s formula; Jacobson’s leamm; g-Drazin inverse; Bounded linear operator; Common spectral propertyMSC: 15A09; 47A10; 32A65; 16U99DOI: 10.2298/FIL2115083C Spectral radius and energy of Sombor matrix of graphs 5093 - 5100 Zhao Wang, Yaping Mao, Ivan Gutman, Jichang Wu and Qin Ma   AbstractKeywords: Graph spectrum; Sombor matrix; Sombor spectral radius; Sombor energy; Nordhaus–Gaddum type resultMSC: 05C09; 05C92DOI: 10.2298/FIL2115093W Article page: 123>>

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