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In this paper, we sharpen and generalize Shafer-Fink's double inequality for the arc sine function.

Classical Analysis and ODEs · Mathematics 2014-05-08 Feng Qi , Bai-Ni Guo

We define analogues of higher derivatives for $F_q$-linear functions over the field of formal Laurent series with coefficients in $F_q$. This results in a formula for Taylor coefficients of a $F_q$-linear holomorphic function, a definition…

Number Theory · Mathematics 2007-05-23 Anatoly N. Kochubei

For analytic functions f(z) in the open unit disk U with f(0)=f'(0)-1=0, S. S. Miller and P. T. Mocanu (Integral Transform. Spec. Funct. 19(2008)) have considered some sufficient problems for starlikeness. The object of the present paper is…

Complex Variables · Mathematics 2013-04-02 Hitoshi Shiraishi , Kazuo Kuroki , Shigeyoshi Owa

In this note we revisit Almgren's theory of Q-valued functions, that are functions taking values in the space of unordered Q-tuples of points in R^n. In particular: 1) we give shorter versions of Almgren's proofs of the existence of…

Analysis of PDEs · Mathematics 2011-03-18 Camillo De Lellis , Emanuele Nunzio Spadaro

We extend the Moser-Trudinger inequality of one function to systems of orthogonal functions. Our results are asymptotically sharp when applied to the collective behavior of eigenfunctions of Schr\"odinger operators on bounded domains.

Analysis of PDEs · Mathematics 2024-01-29 Rakesh Arora , Phan Thành Nam , Phuoc-Tai Nguyen

In this paper, we prove some new inequalities of Hadamard-type for convex functions on the co-ordinates.

Classical Analysis and ODEs · Mathematics 2012-03-21 M. Emin Ozdemir , Ahmet Ocak Akdemir , Mevlut Tunc

In this paper, several Bohr-type inequalities are generalized to the form with two parameters for the bounded analytic function. Most of the results are sharp.

Complex Variables · Mathematics 2025-02-06 Wanqing Hou , Qihan Wang , Boyong Long

We consider functions L_p-integrable with Jacobi weights on [-1,1] and prove Hardy--Littlewood type inequalities for fractional integrals. As applications, we obtain the sharp (L_p, L_q) Ulyanov-type inequalities for the Ditzian--Totik…

Functional Analysis · Mathematics 2016-01-06 Polina Glazyrina , Sergey Tikhonov

This work presents proofs of the main results of (math.QA/9808015), except those on q-Berezin transform to appear in a subsequent work. The notation and the results of (math.QA/9808037) and (math.QA/9808047) are used.

Quantum Algebra · Mathematics 2007-05-23 D. Shklyarov , S. Sinel'shchikov , L. Vaksman

In this paper we study the genralized q-Euler numbers and polynomials. From our results, we derive some interesting congruences related tothe generalized q-Euler numbers.

Number Theory · Mathematics 2009-10-15 Kyoung-Ho Park , Young-Hee Kim , Taekyun Kim

In this work we investigate the asymptotics for Euler's $q$-Exponential $E_{q}(z)$, $q$-Gamma function $\Gamma_{q}(z)$, Ramanujan's function $A_{q}(z)$, Jackson's $q$-Bessel function $J_{\nu}^{(2)}$(z;q) of second kind, Stieltjes-Wigert…

Classical Analysis and ODEs · Mathematics 2007-05-23 Ruiming Zhang

In this paper, we sharpen and generalize Carlson's double inequality for the arc cosine function.

Classical Analysis and ODEs · Mathematics 2013-01-29 Bai-Ni Guo , Feng Qi

We discuss a special function (polyexponential) that extends the natural exponential function and also the exponential integral. The basic properties of the polyexponential are listed and some applications are given. In particular, it is…

Numerical Analysis · Mathematics 2007-10-09 Khristo N. Boyadzhiev

In this article, under mild constraints on the sectional curvature, we exploit a divergence formula for symmetric endomorphisms to deduce a general Poincar\'e type inequality. We apply such inequality to higher-order mean curvature of…

Differential Geometry · Mathematics 2023-06-02 Hilário Alencar , Márcio Batista , Gregório Silva Neto

We investigate classification results for general quadratic functions on torsion abelian groups. Unlike the previously studied situations, general quadratic functions are allowed to be inhomogeneous or degenerate. We study the discriminant…

Commutative Algebra · Mathematics 2007-12-01 Florian Deloup , Gwenael Massuyeau

In this paper the double-sided Talor's approximations are used to obtain generalisations and improvements of some trigonometric inequalities.

Classical Analysis and ODEs · Mathematics 2019-06-12 Branko Malesevic , Tatjana Lutovac , Marija Rasajski , Bojan Banjac

The primary objective of this paper is to establish several sharp versions of Bohr inequalities for bounded analytic functions in the unit disk $\mathbb{D} := \{z\in\mathbb{C} : |z| < 1\}$ involving multiple Schwarz functions. Moreover, we…

Complex Variables · Mathematics 2026-04-14 Vasudevarao Allu , Raju Biswas , Rajib Mandal

In this paper, we expand functions of specific $q$-exponential growth in terms of its even (odd) Askey- Wilson $q$-derivatives at $0$ and $\eta=(q^{1/4}+q^{-1/4})/2$. This expansion is a $q$-version of the celebrated Lidstone expansion…

Complex Variables · Mathematics 2021-09-07 Mourad E. H. Ismail , Zeinab S. I. Mansour

By employing the $q$-difference operator, various classes of $q$-extensions of starlike functions have emerged from many different viewpoints and perspectives. Ruscheweyh's work unified these $q$-extensions with convolution operations.…

Complex Variables · Mathematics 2025-08-12 Ming Li , Ao-Li Zhu

This paper deals with generalized elliptic integrals and generalized modular functions. Several new inequalities are given for these and related functions.

Classical Analysis and ODEs · Mathematics 2011-09-01 B. A. Bhayo , M. Vuorinen