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Front Page FilomatPublisher: Faculty of Sciences and Mathematics, NišISSN: 0354-5180Issue: 36_11Date: 2022Journal Homepage

On hyponormality of the sum of two composition operators 3561 - 3572
Yoenha Kim and Eungil Ko  
AbstractKeywords: Composition operator; hyponormal operator; linear combination of composition operatorsMSC: 47B33; 47B20; 47B38DOI: 10.2298/FIL2211561K
Existence result for stochastic fractional coupled system 3573 - 3591
Noureddine Bouteraa  
AbstractKeywords: Stochastic equation; Mild solution; Fractional derivative; Fixed point theoremMSC: 35R11; 40G05DOI: 10.2298/FIL2211573B
Linear inequalities via extension of Montgomery identity and weighted Hermite-Hadamard inequalities with and without green functions 3593 - 3608
Shaista Alamgir, Asif R Khan and Josip E Pečarić  
AbstractKeywords: Convex functions; Weighted Hermite Hadamard and Montgomery IdentityMSC: 26A51; 39B62; 26D15; 26D20; 26D99DOI: 10.2298/FIL2211593A
On the Karush-Kuhn-tucker reformulation of the bilevel optimization problems on Riemannian manifolds 3609 - 3624
Jiagen Liao and Zhongping Wan  
AbstractKeywords: Bilevel optimization problem; KKT reformulation; Riemannian manifolds; optimality conditionsMSC: 26B25; 90C26DOI: 10.2298/FIL2211609L
On an open problem of Lü, Li and Yang 3625 - 3640
Sujoy Majumder and Arup Dam  
AbstractKeywords: Meromorphic function; derivative; small functionMSC: 30D35DOI: 10.2298/FIL2211625M
The infinite-time ruin probability for a bidimensional risk model with dependent geometric Lévy price processes 3641 - 3654
Bingjie Wang, Dongya Cheng and Jigao Yan  
AbstractKeywords: Bidimensional risk model; Geometric Le´vy price process; Consistently varying tail; Strongly asymptotic independence; Ruin probabilityMSC: 62E20; 62H20DOI: 10.2298/FIL2211641W
Approximation by Szász-Baskakov operators based on boas-buck-type polynomials 3655 - 3673
Melek Sofyalıoğlu and Kadir Kanat  
AbstractKeywords: Boas-Buck-type polynomials; Weighted space; Voronovskaya-type theorem; Weighted Modulus of ContinuityMSC: 41A25; 41A36; 47A58DOI: 10.2298/FIL2211655S
On local spectral properties of extended Hamilton operators 3675 - 3678
Wurichaihu Bai and Alatancang Chen  
AbstractKeywords: Extended Hamilton operators; local spectral property; Weyl type theoremMSC: 47A11; 47A05; 47A15DOI: 10.2298/FIL2211675B
Estimates concerned with Hankel determinant for M (α) class 3679 - 3688
Selin Aydinoğlu and Bülent Nafi Örnek  
AbstractKeywords: Fekete-Szegö functional; Hankel determinant; Analytic function; Schwarz lemma. Angular derivativeMSC: 30C80; 32A10DOI: 10.2298/FIL2211679A
Existence, compactness, estimates of eigenvalues and s-numbers of a resolvent for a linear singular operator of the Korteweg-de Vries type 3689 - 3700
M B Muratbekov and A O Suleimbekov  
AbstractKeywords: Korteweg-de Vries type singular operator; separabilityMSC: 47A10; 35L81DOI: 10.2298/FIL2211689M
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