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Front Page FilomatPublisher: Faculty of Sciences and Mathematics, NišISSN: 0354-5180Issue: 34_11Date: 2020Journal Homepage
 

Schur convexity of mixed mean of n variables involving three parameters 3663 - 3674
Dong-Sheng Wang, Huan-Nan Shi and Chun-Ru Fu  
AbstractKeywords: mixed mean of n variables; Schur convexity; Schur geometric convexity; Schur harmonic convexity; majorization; inequalitiesMSC: 26E60; 26D15; 26A51DOI: 10.2298/FIL2011663W
On nonsingularity and group invertibility of combinations of two group invertible matrices 3675 - 3687
Yu Li and Kezheng Zuo  
AbstractKeywords: rank; group invertibility; invertibility; combinationMSC: 15A09; 15A24DOI: 10.2298/FIL2011675L
Convergence and stability of an iterative algorithm for strongly accretive Lipschitzian operator with applications 3689 - 3704
Vivek Kumar, Nawab Hussain, Abdul Rahim Khan and Faik ¨ Gürsoy  
AbstractKeywords: Iterative algorithm; fixed point; stability; strongly accretive operatorMSC: 47H05; 47H06; 54H10DOI: 10.2298/FIL2011689K
Some singular value inequalities related to linear maps 3705 - 3709
Junjian Yang, Linzhang Lu and Zhen Chen  
AbstractKeywords: Block matrices; Singular value inequalities; Linear mapsMSC: 15A45; 15A60DOI: 10.2298/FIL2011705Y
A note on the Schwarz lemma for harmonic functions 3711 - 3720
Marek Svetlik  
AbstractKeywords: The Schwarz lemma; the Schwarz-Pick lemma; harmonic functionsMSC: 30C80; 31C05; 30C75DOI: 10.2298/FIL2011711S
Ordering of the unicyclic signed graphs with perfect matchings by their minimal energies 3721 - 3745
Ling Yuan and Wen-Huan Wang  
AbstractKeywords: Unicyclic signed graphs; perfect matching; ordering; minimal energyMSC: 05C35DOI: 10.2298/FIL2011721Y
Hemi-slant ξ ⊥ −Riemannian submersions in contact geometry 3747 - 3758
Ramazan Sari and Mehmet Akif Akyol  
AbstractKeywords: Sasakian manifold; Riemannian submersion; hemi-slant ξ⊥-Riemannian submersion; horizontal distribution; second fundamental form of a mapMSC: 53C15; 53C40DOI: 10.2298/FIL2011747S
A note on the potential function of an arbitrary graph H 3759 - 3766
Jianhua Yin and Guangming Li  
AbstractKeywords: Graphic sequence; Potentially H-graphic sequence; Potential functionMSC: 05C35; 05C07DOI: 10.2298/FIL2011759Y
Gray's decomposition on doubly warped product manifolds and applications 3767 - 3776
Hoda K El-Sayied, Carlo A Mantica, Sameh Shenawy and Noha Syied  
AbstractKeywords: Codazzi Ricci tensor; doubly warped manifolds; Killing Ricci tensor; doubly warped space-times; Einstein-like manifoldsMSC: 53C21; 53C25; 53C50; 53C80DOI: 10.2298/FIL2011767E
Best simultaneous approximation on metric spaces via monotonous norms 3777 - 3787
Mona Khandaqji and Aliaa Burqan  
AbstractKeywords: Simultaneous; ApproximationMSC: 41Axx 41A50; 41A28DOI: 10.2298/FIL2011777K
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