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

期刊: REVISTA DE LA REAL ACADEMIA DE CIENCIAS EXACTAS FISICAS Y NATURALES SERIE A-MATEMATICAS, 2021; 115 (3)

Two q-supercongruences of truncated basic hypergeometric series containing two free parameters are established by employing specific identities for ba......

On two supercongruences for sums of Apery-like numbers

期刊: REVISTA DE LA REAL ACADEMIA DE CIENCIAS EXACTAS FISICAS Y NATURALES SERIE A-MATEMATICAS, 2021; 115 (3)

We prove two supercongruences for sums of the Apery-like numbers: T-n = Sigma(n)(k=0) ((k) (n))(2) ((n) (2k))(2), which was first introduced by Almkvi......

A method to construct continued-fraction approximations and its applications

期刊: REVISTA DE LA REAL ACADEMIA DE CIENCIAS EXACTAS FISICAS Y NATURALES SERIE A-MATEMATICAS, 2021; 115 (3)

In this paper, we provide a method to construct a continued-fraction approximation based upon a given asymptotic expansion. As applications of the met......

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

期刊: REVISTA DE LA REAL ACADEMIA DE CIENCIAS EXACTAS FISICAS Y NATURALES SERIE A-MATEMATICAS, 2021; 115 (3)

In the paper, with the aid of the Cebysev integral inequality, by virtue of the integral representation of the Riemann zeta function, with the use of ......

New properties of the divided difference of psi and polygamma functions

期刊: REVISTA DE LA REAL ACADEMIA DE CIENCIAS EXACTAS FISICAS Y NATURALES SERIE A-MATEMATICAS, 2021; 115 (3)

Let psi(n) = (-1)(n-1) psi((n)) for n >= 0, where psi((n)) stands for the psi and polygamma functions. For p, q is an element of R and rho = min (p......

The areas log-Minkowski inequality

期刊: REVISTA DE LA REAL ACADEMIA DE CIENCIAS EXACTAS FISICAS Y NATURALES SERIE A-MATEMATICAS, 2021; 115 (3)

In this paper, we first propose and establish an Orlicz log-Minkowski inequality for affine surface areas by introducing new concepts of affine surfac......

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

期刊: REVISTA DE LA REAL ACADEMIA DE CIENCIAS EXACTAS FISICAS Y NATURALES SERIE A-MATEMATICAS, 2021; 115 (3)

For a, b > 0 with a not equal b, the Toader mean of a and b is defined by T (a, b) = 2/pi integral(pi/2)(0) root a(2)cos(2) t + b(2)sin(2) tdt. In ......

Suitable sets for paratopological groups

期刊: REVISTA DE LA REAL ACADEMIA DE CIENCIAS EXACTAS FISICAS Y NATURALES SERIE A-MATEMATICAS, 2021; 115 (4)

A subset S of a paratopological group G is a suitable set for G, if S is a discrete subspace of G, S boolean OR {e} is closed, and the subgroup < S......

Dual properties and monotone normality

期刊: REVISTA DE LA REAL ACADEMIA DE CIENCIAS EXACTAS FISICAS Y NATURALES SERIE A-MATEMATICAS, 2021; 115 (3)

Let P be a topological property. We say that a space X is dually P if for any neighbourhood assignment O={O-x : x is an element of X} of X, there is a......

Frechet-Kolmogorov compactness of Prabhakar integral operator

期刊: REVISTA DE LA REAL ACADEMIA DE CIENCIAS EXACTAS FISICAS Y NATURALES SERIE A-MATEMATICAS, 2021; 115 (4)

In many cases, the differential equations are converted into an equivalent functional equations involving integral operators generated by different ke......

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

期刊: REVISTA DE LA REAL ACADEMIA DE CIENCIAS EXACTAS FISICAS Y NATURALES SERIE A-MATEMATICAS, 2021; 115 (3)

In the article, we present the best possible parameters alpha, beta such that the double inequality S-alpha(a, b) < T-4(a, b) < S-beta(a, b) hol......

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

期刊: REVISTA DE LA REAL ACADEMIA DE CIENCIAS EXACTAS FISICAS Y NATURALES SERIE A-MATEMATICAS, 2021; 115 (3)

Let G = (V, E) be a locally finite, connected and weighted graph. We prove that, for a graph satisfying curvature dimension condition CDE' (n, 0) and ......

Sharp power mean bounds for the lemniscate type means

期刊: REVISTA DE LA REAL ACADEMIA DE CIENCIAS EXACTAS FISICAS Y NATURALES SERIE A-MATEMATICAS, 2021; 115 (4)

In this paper, we present sharp power mean bounds for the so-called lemniscate type means, which were introduced by Neuman (Math Pannon 18(1):77-94, 2......

Generalized inverses of elements and their polarities in rings

期刊: REVISTA DE LA REAL ACADEMIA DE CIENCIAS EXACTAS FISICAS Y NATURALES SERIE A-MATEMATICAS, 2021; 115 (3)

Let R be an associative ring with unity 1. The main contribution of this paper is to introduce the notion of generalized quasipolar elements in R as a......

Generalized hypergeometric Bernoulli numbers

期刊: REVISTA DE LA REAL ACADEMIA DE CIENCIAS EXACTAS FISICAS Y NATURALES SERIE A-MATEMATICAS, 2021; 115 (3)

We introduce generalized hypergeometric Bernoulli numbers for Dirichlet characters. We study their properties, including relations, expressions and de......

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