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

  • Uniqueness of solution for higher-order nonlinear fractional differential equations with multi-point and integral boundary conditions

    Rezan Sevinik Adıgüzel, Ümit Aksoy, Erdal Karapinar, İnci M. Erhan

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  • A note on isoperimetric inequalities of Gromov hyperbolic manifolds and graphs

    Álvaro Martínez Pérez, José Manuel Rodríguez García

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  • Fractional type multivariate sampling operators

    Uğur Kadak

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  • Further refinements of Alzer–Fonseca–Kovačec’s inequalities and applications

    Mohamed Amine Ighachane, Mohamed Akkouchi, El Hassan Benabdi

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  • On two supercongruences for sums of Apéry-like numbers

    Ji Cai Liu

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  • An optimized Chen first inequality for special slant submanifolds in Lorentz-Sasakian space forms

    O. Postavaru, I. Mihai

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  • On two-generator Fibonacci numerical semigroups with a prescribed genus

    Matheus Bernardini, Diego Marques, Pavel Trojovský

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  • From projectors to 1MP and MP1 generalized inverses and their induced partial orders

    M. V. Hernández, M. B. Lattanzi, Néstor Javier Thome Coppo

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  • New properties of the divided difference of psi and polygamma functions

    Jing Tian, Zhen Yang

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  • A linear preserver problem on maps which are triple derivable at orthogonal pairs

    Ahlem Ben Ali Essaleh, Antonio Miguel Peralta Pereira

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  • Gevrey regularity of the solutions of the inhomogeneous partial differential equations with a polynomial semilinearity

    Pascal Remy

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  • The supermoduli of SUSY curves with Ramond punctures

    Ugo Bruzzo, Daniel Hernández Ruipérez

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  • Sharp inequalities on circular and hyperbolic functions using Bernoulli inequality types

    Abd Raouf Chouikha

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  • 12-derivations of Lie algebras and transposed Poisson algebras

    Bruno Leonardo Macedo Ferreira, Ivan Kaygorodov, Viktor Lopatkin

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  • Boas-type theorems for the Bessel transform

    El Mehdi Loualid, Abdelghani Elgargati, El Mehdi Berkak, Radouan Daher

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  • Sharp Lyapunov-type inequalities for second-order half-linear difference equations with different kinds of boundary conditions

    Robert Stegliński

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  • Dual and canonical dual K-Bessel sequences in quaternionic Hilbert spaces

    Hanen Ellouz

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  • Fréchet spaces of general Dirichlet series

    Andreas Defant, Tomás Fernández Vidal, Ingo Schoolmann, Pablo Sevilla-Peris

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  • A new modified semi-analytical technique for a fractional-order Ebola virus disease model

    H. M. Srivastava, Sinan Deniz

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  • Proofs for two Lambert series identities of Gosper

    Bing He

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  • Logarithmic convexity and increasing property of the Bernoulli numbers and their ratios

    Ye Shuang, Bai-Ni Guo, Feng Qi

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  • On totally nonpositive matrices associated with a triple negatively realizable

    Begoña Canto Colomina, Rafael Cantó Colomina, Ana María Urbano Salvador

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  • Blow-up for a semilinear heat equation with Fujita’s critical exponent on locally finite graphs

    Yiting Wu

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  • Some q-supercongruences modulo the square and cube of a cyclotomic polynomial

    Victor J. W. Guo, Michael J. Schlosser

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  • The areas log-Minkowski inequality

    Chang-Jian Zhao

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  • Correction to: Rate of convergence of exponential type operators related to p(x)=2x3/2 for functions of bounded variation

    Ulrich Abel, Vijay Gupta

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  • A Banach contraction principle in fuzzy metric spaces defined by means of t-conorms

    Valentín Gregori Gregori, Juan José Miñana Prats

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  • The use of improved-F expansion method for the time-fractional Benjamin–Ono equation

    Bahar Karaman

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  • Anti-Fubini and pseudo-Fubini functions

    Luis Bernal González, María del Carmen Calderón Moreno

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  • On two problems concerning Eberlein compacta

    Witold Marciszewski

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