Results 81 to 90 of about 18,585 (194)

A Nice Separation of Some Seiffert-Type Means by Power Means

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2012
Seiffert has defined two well-known trigonometric means denoted by 𝒫 and 𝒯. In a similar way it was defined by Carlson the logarithmic mean ℒ as a hyperbolic mean. Neuman and Sándor completed the list of such means by another hyperbolic mean ℳ. There are
Iulia Costin, Gheorghe Toader
doaj   +1 more source

Integral inequalities for trigonometric polynomials in periodic Morrey spaces

open access: yesСовременная математика: Фундаментальные направления
In this paper, we present a detailed exposition of Bernstein’s inequality, inequalities of different metrics and different dimensions for trigonometric polynomials in periodic Morrey spaces.
D. J. Joseph
doaj   +1 more source

GENERALIZED GUDERMANNIAN FUNCTION

open access: yesПроблемы анализа, 2018
Wilker and Huygens-type inequalities involving generalized Gudermannian function and its inverse function are established. These results are obtained with the aid of the p-version of the Schwab-Borchardt mean.
Neuman Edward
doaj   +1 more source

Some Identities and inequalities related to the Riemann zeta function

open access: yesMoroccan Journal of Pure and Applied Analysis, 2019
A new proof of Euler’s formular for calculating ζ(2k) is given. Some new inequalities and identities for ζ(2k + 1) have also been given. The Riemann’s functional equation together with trigonometric identities were used to establish the results.
Abe-I-Kpeng Gregory   +2 more
doaj   +1 more source

On the p-Version of the Schwab-Borchardt Mean

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2014
This paper deals with a one-parameter generalization of the Schwab-Borchardt mean. The new mean is defined in terms of the inverse functions of the generalized trigonometric and generalized hyperbolic functions.
Edward Neuman
doaj   +1 more source

Convex functions and inequalities in the secondary school

open access: yesLietuvos Matematikos Rinkinys, 2008
A function f : Df  → R is called convex if for any x, y ∈ Df the inequality f ( x+y/2 ) \leq (f (x)+f (y)  )/2 holds. We prove the main property of the convex fonctions (inequality (4)) and also the inequalities which the arithmetic, geometric, harmonic ...
Juozas Šinkūnas
doaj  

Trigonometric and Hyperbolic Inequalities

open access: yes, 2011
We prove various new trigonometric and hyperbolic inequalities of Jordan, Wilker, Huygens or Cusa-Huygens type. Connections with bivariate means, as well as monotonicity and convexity properties are pointed out, too.
openaire   +2 more sources

Solutions of two open problems on inequalities involving trigonometric and hyperbolic functions

open access: yesCubo
In 2019, Bagul et al. posed two open problems dealing with inequalities involving trigonometric and hyperbolic functions and an adjustable parameter. This article is an attempt to solve these open problems.
Rupali Shinde   +2 more
doaj   +1 more source

A separation of some Seiffert-type means by power means

open access: yesJournal of Numerical Analysis and Approximation Theory, 2012
Consider the identric mean \(\mathcal{I}\), the logarithmic mean \(\mathcal{L,}\) two trigonometric means defined by H. J. Seiffert and denoted by \(\mathcal{P}\) and \(\mathcal{T,}\) and the hyperbolic mean \(\mathcal{M}\) defined by E.
Iulia Costin, Gheorghe Toader
doaj   +2 more sources

Home - About - Disclaimer - Privacy