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Front Page FilomatPublisher: Faculty of Sciences and Mathematics, NišISSN: 0354-5180Issue: 35_15Date: 2021Journal Homepage

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
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