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We give a criterion which characterizes a homogeneous real multi-variate polynomial to have the property that all sufficiently large powers of the polynomial (as well as their products with any given positive homogeneous polynomial) have…

Complex Variables · Mathematics 2017-03-31 Colin Tan , Wing-Keung To

We give a characterization of harmonic and subharmonic functions in terms of their mean values in balls and on spheres. This includes the converse of an inequality of Beardon's for subharmonic functions. We also obtain integral inequalities…

Analysis of PDEs · Mathematics 2007-05-23 Pedro Freitas , Joao Palhoto Matos

In this paper, we prove some inequalities for the differences and ratios of the beta function.

Classical Analysis and ODEs · Mathematics 2026-04-27 Jean-Marcel T. Dje , Eyram A. K. Schwinger , Benoit F. Sehba

Homogeneous spaces are de Branges' Hilbert spaces of entire functions with the property that certain weighted rescaling transforms induce isometries of the space into itself. A classical example of a homogeneous space is the Paley-Wiener…

Complex Variables · Mathematics 2024-10-01 Benjamin Eichinger , Harald Woracek

The harmonic numbers and generalized harmonic numbers appear frequently in many diverse areas such as combinatorial problems, many expressions involving special functions in analytic number theory and analysis of algorithms. The aim of this…

Number Theory · Mathematics 2023-01-02 Dae san Kim , Hye Kyung Kim , Taekyun Kim

The mean value inequality is characteristic for upper semicontinuous functions to be subharmonic. Quasinearly subharmonic functions generalize subharmonic functions. We find the necessary and sufficient conditions under which subsets of…

Analysis of PDEs · Mathematics 2012-08-13 Oleksiy Dovgoshey , Juhani Riihentaus

Some real functions f induce mean of positive numbers and the matrix monotonicity gives a possibility for means of positive definite matrices. Moreover, such a function f can define linear mapping beta on matrices (which is basic in the…

Functional Analysis · Mathematics 2010-12-22 Adam Besenyei , Denes Petz

A recently published result states inequalities of the harmonic mean of the digamma function. In this work, we prove among others results that for all positive real numbers $x\neq 1$, $$-\gamma<-\gamma…

General Mathematics · Mathematics 2024-05-12 Mohamed Bouali

The logarithmic convexity of restrictions of the Beta functions to rays parallel to the main diagonal and the functional equation \[ \phi\left( x+1\right) =\frac{x\left( x+k\right) }{\left( 2x+k+1\right) \left( 2x+k\right) }\phi\left(…

Classical Analysis and ODEs · Mathematics 2015-05-07 Martin Himmel , Janu sz Matkowski

A differentiable function is pseudoconvex if and only if its restrictions over straight lines are pseudoconvex. A differentiable function depending on one variable, defined on some closed interval $[a,b]$ is pseudoconvex if and only if…

Optimization and Control · Mathematics 2019-11-19 Vsevolod Ivanov Ivanov

Several expansions of the solutions to the confluent Heun equation in terms of incomplete Beta functions are constructed. A new type of expansion involving certain combinations of the incomplete Beta functions as expansion functions is…

Mathematical Physics · Physics 2009-09-10 Artur Ishkhanyan

We introduce new generalizations of the Gamma and the Beta functions. Their properties are investigated and known results are obtained as particular cases.

Number Theory · Mathematics 2015-06-25 P. Njionou Sadjang

We give a general expression of spherical functions on $p$-adic homogeneous spaces of $G$, based on data of $G$ and functional equations of spherical functions. Then, we show a unified method to obtain functional equations of spherical…

Number Theory · Mathematics 2009-04-25 Yumiko Hironaka

In this paper, we completely classify homogeneous production functions with an arbitrary number of inputs whose production hypersurfaces are flat. As an immediate consequence, we obtain a complete classification of homogeneous production…

Differential Geometry · Mathematics 2013-11-15 Bang-Yen Chen , Gabriel Eduard Vilcu

In this article, we define a special function called the Bigamma function. It provides a generalization of Euler's gamma function. Several algebraic properties of this new function are studied. In particular, results linking this new…

General Mathematics · Mathematics 2024-06-05 Mustapha Raissouli , Mohamed Chergui

We investigate homogeneity in the special Colombeau algebra. It is shown that strongly scaling invariant functions on the d-dimensional space are simply the constants. On the pierced space, strongly homogeneous functions admit tempered…

General Mathematics · Mathematics 2008-02-13 Clemens Hanel , Eberhard Mayerhofer , Stevan Pilipovic , Hans Vernaeve

We give a local characterization of the class of functions having positive distributional derivative with respect to $\bar{z}$ that are almost everywhere equal to one of finitely many analytic functions and satisfy some mild non-degeneracy…

Complex Variables · Mathematics 2009-09-29 Julius Borcea , Rikard Bøgvad

In this paper, we define a subclass of sense-preserving harmonic functions associated with a class of analytic functions satisfying a differential inequality. We then establish a close relation between both subclasses. Further, we obtain…

Complex Variables · Mathematics 2024-06-21 Prachi Prajna Dash , Jugal Kishore Prajapat

We consider the system of stochastic differential equations dX_t=A(X_{t-}) dZ_t, where Z_t^1, ..., Z^d_t are independent one-dimensional symmetric stable processes of order \alpha, and the matrix-valued function A is bounded, continuous and…

Probability · Mathematics 2009-04-23 Richard F. Bass , Zhen-Qing Chen

Let $\Omega\subset\mathbb{R}^n$ be a bounded domain satisfying the uniform exterior cone condition. We establish existence and uniqueness of continuous solutions of the Dirichlet Problem associated to certain intrinsic nonlinear mean value…

Analysis of PDEs · Mathematics 2020-06-16 Ángel Arroyo , José G. Llorente