Volume XXVII (2019) fascicola 2

 

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  • Cover 1
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  • Instructions
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  • Contents
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  • Andrew D. Ionascu
    Intersecting semi-disks and the synergy of three quadratic forms
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  • Ion Jardan
    On partial inverse operations in the class of preradicals of modules
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  • Djavvat Khadjiev and Idris Oren
    Global invariants of paths and curves for the group of orthogonal transformations in the two-dimensional Euclidean space
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  • Miroslav Kures
    On elliptic curves with a closed component passing through a hexagon
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  • Yaping Mao, Zhao Wang, Kinkar Ch. Das
    Steiner degree distance of two graph products
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  • Mamoru Nunokawa, Janusz Sok
    On a local version of Jack’s lemma
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  • Ahmet Oteles
    Bipartite Graphs Associated with Pell Mersenne and Perrin Numbers
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  • Josip Pecaric, Anamarija Perusic Pribanic, and Ksenija Smoljak Kalamir,

    Generalizations of Steffensen’s inequality via two-point
    Abel-Gontscharoff polynomial

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  • Ioan Pop
    On some products in pro-categories and shape categories
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  • Ioan-Lucian Popa, Traian Ceausu, Ovidiu Bagdasar, and Ravi P. Agarwal
    Characterizations of generalized exponential trichotomies for linear discrete-time systems
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  • Dorina Raducanu
    Second Hankel determinant for a class of analytic functions defined by q-derivative operator
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  • Luca Sabatini
    Estimates of the Laplacian Spectrum and Bounds of Topological Invariants for Riemannian Manifolds with Boundary
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  • Tapan Senapati, Young Bae Jun, G. Muhiuddin and K. P. Shum
    Cubic intuitionistic structures applied to ideals of BCI-algebras
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  • M. Eduardo Uribe-Paczka, Eliseo Sarmiento, and Carlos Renteria Marquez
    Vanishing ideals over odd cycles
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