Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A: Matemáticas ( RACSAM )

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  Año 2021, Vol. 115, Número 3

  • A note on the weak topology of spaces Ck(X) of continuous functions

    Jerzy Kakol, Santiago Emmanuel Moll López

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  • Bernstein and Turán-type inequalities for a polynomial with constraints on its zeros

    Abdullah Mir, Daniel Breaz

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  • Error bounds and gap functions for various variational type problems

    Aviv Gibali

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  • Extension of the Švarc–Milnor lemma to gyrogroups

    Jaturon Wattanapan, Watchareepan Atiponrat, Teerapong Suksumran

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  • On Gevrey asymptotics for linear singularly perturbed equations with linear fractional transforms

    Guoting Chen, Alberto Lastra Sedano, Stéphane Malek

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  • Orthogonality and smoothness induced by the norm derivatives

    Debmalya Sain

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  • Sharp self-improving property of discrete Muckenhoupt and Gehring weights

    Samir H. Saker, Safi S. Rabie, Mario Krnic

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  • Compact 4-manifolds admitting special handle decompositions

    María Rita Casali, Paola Cristofori

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  • Generalized Killing Ricci tensor for real hypersurfaces in the complex hyperbolic quadric

    Changhwa Woo, Hyunjin Lee, Young Jin Suh

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  • Computing tensor generalized inverses via specialization and rationalization

    Predrag S. Stanimirovic, Juan Rafael Sendra Pons, Ratikanta Behera, Jajati Keshari Sahoo, Dijana Mosic, Juana Sendra, Alberto Lastra Sedano

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  • On the stability, integrability and boundedness analyses of systems of integro-differential equations with time-delay retardation

    Cemil Tunç, Osman Tunç

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  • A new shrinking projection algorithm for a generalized mixed variational-like inequality problem and asymptotically quasi-ϕ-nonexpansive mapping in a Banach space

    Mohammad Farid, Watcharaporn Cholamjiak, Rehan Ali, K. R. Kazmi

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  • Continuum-wise expansiveness for discrete dynamical systems

    Manseob Lee

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  • Para-Sasaki-like Riemannian manifolds and new Einstein metrics

    Stefan Ivanov, Hristo Tanev, Mancho Manev

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  • Stable Riemann orbifolds of Schottky type

    Raquel Díaz Sánchez, Rubén Antonio Hidalgo

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  • Denting points of convex sets and weak property (π) of cones in locally convex spaces

    Fernando García-Castaño, Miguel Ángel Melguizo Padial, Giovanni Parzanese

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  • Generalized inverses of elements and their polarities in rings

    Tianli Li, Xiao-Fei Peng, Huihui Zhu

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  • Padovan numbers which are palindromic concatenations of two distinct repdigits

    Taboka P. Chalebgwa, Mahadi Ddamulira

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  • Essential bounds of Dirichlet polynomials

    Gaspar Mora Martínez, E. Benítez

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  • Sharp generalized Seiffert mean bounds for the Toader mean of order 4

    Yanlin Li, Tiehong Zhao

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  • Nonlinear approximation in N-dimension with the help of summability methods

    Ismail Aslan, Oktay Duman

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  • Lifting properties of formal triangular matrix rings

    Meltem Altun Özarslan

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  • The impact of system deterioration and product warranty on optimal lot sizing with maintenance and shortages backordered

    Kuo Lung Hou, H. M. Srivastava, Li Chiao Lin, Shih Fang Lee

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  • Dual properties and monotone normality

    Wei-Feng Xuan, Yan-Kui Song

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  • neralized hypergeometric Bernoulli numbers

    Kalyan Chakraborty, Takao Komatsu

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  • Higher order Lupaş-Kantorovich operators and finite differences

    Vijay Gupta

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  • Sharp bounds for the Toader mean in terms of arithmetic and geometric means

    Zhen Yang, Jing Tian

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  • Superadditivity of convex integral transform for positive operators in Hilbert spaces

    Silvestru Sever Dragomir

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  • A method to construct continued-fraction approximations and its applications

    Chao-Ping Chen, H. M. Srivastava, Qin Wang

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