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Motivated by the work of J. S\'andor [19], in this paper we establish a new Wilker type and Huygens type inequalities involving the trigonometric and hyperbolic functions. Moreover, in terms of hyperbolic functions, the upper and lower…

综合数学 · 数学 2024-04-08 Yogesh J. Bagul , Ramkrishna M. Dhaigude , Barkat A. Bhayo , Vinay M. Raut

In this paper we study the convexity and concavity properties of generalized trigonometric and hyperbolic functions in case of Logarithmic mean.

偏微分方程分析 · 数学 2014-04-29 Barkat Ali Bhayo , Li Yin

We study the convexity/concavity properties of the generalized $p$-trigonometric functions in the sense of P. Lindqvist with respect to the power means.

经典分析与常微分方程 · 数学 2012-09-06 Barkat Ali Bhayo , Matti Vuorinen

In this paper, we show some refinements of generalized numerical radius inequalities involving the Young and Heinz inequalities. In particular, we present \begin{align*}…

泛函分析 · 数学 2018-05-22 Monire Hajmohamadi , Rahmatollah Lashkaripour , Mojtaba Bakherad

Investigation of the generalized trigonometric and hyperbolic functions containing two parameters has been a very active research area over the last decade. We believe, however, that their monotonicity and convexity properties with respect…

经典分析与常微分方程 · 数学 2024-11-21 Dmitrii Karp , Elena Prilepkina

We find two-sided inequalities for the generalized hypergeometric function of the form ${_{q+1}}F_{q}(-x)$ with positive parameters restricted by certain additional conditions. Both lower and upper bounds agree with the value of…

经典分析与常微分方程 · 数学 2015-02-03 D. Karp , S. M. Sitnik

Generalised definitions of exponential, trigonometric sine and cosine and hyperbolic sine and cosine functions are given. In the lowest order, these functions correspond to ordinary exponential, trigonometric sine etc. Some of the…

数学物理 · 物理学 2007-05-23 Debasis Biswas , S. Biswas , Asoke P. Chattopadhyay

In this paper we give a geometric condition which ensures that $(q,p)$-Poincar\'e-Sobolev inequalities are implied from generalized $(1,1)$-Poincar\'e inequalities related to $L^1$ norms in the context of product spaces. The concept of…

经典分析与常微分方程 · 数学 2022-05-11 Maria Eugenia Cejas , Carolina Mosquera , Carlos Pérez , Ezequiel Rela

Generalized trigonometric functions and generalized hyperbolic functions can be converted to each other by the duality formulas previously discovered by the authors. In this paper, we apply the duality formulas to prove dual pairs of…

经典分析与常微分方程 · 数学 2023-01-06 Hiroki Miyakawa , Shingo Takeuchi

Some inequalities for the ratios of generalized digamma functions are presented. The approache makes use of the series representations of the $(q,k)$-digamma and $(p,q)$-digamma functions.

经典分析与常微分方程 · 数学 2014-08-18 Kwara Nantomah

Based on Spiridonov's analysis of elliptic generalizations of the Gauss hypergeometric function, we develop a common framework for 7-parameter families of generalized elliptic, hyperbolic and trigonometric univariate hypergeometric…

经典分析与常微分方程 · 数学 2009-11-11 Fokko J. van de Bult , Eric M. Rains , Jasper V. Stokman

In this paper, we present and prove some generalizations of some inequalities for the $p$-Gamma, $q$-Gamma and $k$-Gamma functions. Our approach makes use of the series representations of the psi, $p$-psi, $q$-psi and $k$-psi functions.

经典分析与常微分方程 · 数学 2015-03-19 Kwara Nantomah , Edward Prempeh

To prove by probabilistic methods that every $(n-1)$-dimensional section of the unit cube in $R^n$ has volume at most $\sqrt 2$, K. Ball made essential use of the inequality $$ \frac{1}{\pi}\int_{-\infty}^{\infty} \left(\frac{\sin^2…

泛函分析 · 数学 2017-08-29 Susanna Spektor

We find an integral representation for the generalized hypergeometric function unifying known representations via generalized Stieltjes, Laplace and cosine Fourier transforms. Using positivity conditions for the weight in this…

经典分析与常微分方程 · 数学 2014-09-11 Dmitrii Karp

In this paper a new class of radial basis functions based on hyperbolic trigonometric functions will be introduced and studied. We focus on the properties of their generalised Fourier transforms with asymptotics. Therefore we will compute…

数值分析 · 数学 2025-05-21 Martin Buhmann , Joaquín Jódar , Miguel L. Rodríguez

We consider certain double series of Eisenstein type involving hyperbolic-sine functions. We define certain generalized Hurwitz numbers, in terms of which we evaluate those double series. Our main results can be regarded as a certain…

数论 · 数学 2016-04-29 Yasushi Komori , Kohji Matsumoto , Hirofumi Tsumura

We revisit and prove some convexity inequalities for trace functions conjectured in the earlier part I. The main functional considered is \Phi_{p,q}(A_1,A_2,...,A_m) = (trace((\sum_{j=1}^m A_j^p)^{q/p}))^{1/q} for m positive definite…

算子代数 · 数学 2008-02-25 Eric A. Carlen , Elliott H. Lieb

We present several new inequalities for trigonometric sums. Among others, we show that the inequality $$ \sum_{k=1}^n (n-k+1)(n-k+2)k\sin(kx) > \frac{2}{9} \sin(x) \bigl( 1+2\cos(x) \bigr)^2 $$ holds for all $n\geq 1$ and $x\in (0,…

经典分析与常微分方程 · 数学 2023-07-11 Horst Alzer , Man Kam Kwong

Identities and inequalities for the cosine and sine functions are obtained.

经典分析与常微分方程 · 数学 2020-01-13 Iosif Pinelis

In this paper, we present series representations of the remainders in the expansions for certain trigonometric and hyperbolic functions. By using the obtained results, we establish some inequalities for trigonometric and hyperbolic…

经典分析与常微分方程 · 数学 2016-01-14 C. -P. Chen , R. B. Paris