Results 11 to 20 of about 52,366 (261)

Vector-valued holomorphic and harmonic functions

open access: yesConcrete Operators, 2016
Holomorphic and harmonic functions with values in a Banach space are investigated. Following an approach given in a joint article with Nikolski [4] it is shown that for bounded functions with values in a Banach space it suffices that the composition with
Arendt Wolfgang
doaj   +1 more source

Harmonic functions associated with Pascal distribution series

open access: yesScientific African, 2023
The primary objective of this paper is to explore the application of a specific convolution operator, which incorporates the Pascal distribution series. Through this investigation, we establish essential inclusion relations between the harmonic class HΥ ...
B.A. Frasin   +3 more
doaj   +1 more source

Harmonic analysis of harmonic functions in the plane [PDF]

open access: yesProceedings of the American Mathematical Society, 1976
A continuous function on the complex plane is harmonic if and only if the span of its compositions with entire functions is not dense in the space of continuous functions in the topology of uniform convergence on compact sets.
openaire   +2 more sources

On Harmonic Functions on Trees [PDF]

open access: yesPotential Analysis, 2001
We study the asymptotic behaviour of harmonic and p-harmonic functions ...
Cantón, Alicia   +3 more
openaire   +3 more sources

Fixed-energy harmonic functions

open access: yesDiscrete Analysis, 2017
Fixed-energy harmonic functions, Discrete Analysis 2017:18, 21 pp. The classical Dirichlet problem asks for a harmonic function in the interior of a region that takes specified values on the boundary.
Aaron Abrams, Richard Kenyon
doaj   +1 more source

The Approximation of Harmonic Functions by Harmonic Polynomials and by Harmonic Rational Functions [PDF]

open access: yesBulletin of the American Mathematical Society, 1929
which converges uniformly f or all values of 6. This is of course a general fact, tha t if a given function can be uniformly approximated as closely as desired by a linear combination of other functions, then that function can be expanded in a uniformly convergent series of which each term is a linear combination of those other functions, and ...
openaire   +3 more sources

Some inequalities for strongly $(p,h)$-harmonic convex functions

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2019
In this paper, we show that harmonic convex functions $f$ is strongly $(p, h)$-harmonic convex functions if and only if it can be decomposed as $g(x) = f(x) - c (\frac{1}{x^p})^2,$ where $g(x)$ is $(p, h)$-harmonic convex function.
M.A. Noor, K.I. Noor, S. Iftikhar
doaj   +1 more source

Certain convex harmonic functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2002
We define and investigate a family of complex-valued harmonic convex univalent functions related to uniformly convex analytic functions. We obtain coefficient bounds, extreme points, distortion theorems, convolution and convex combinations for this ...
Yong Chan Kim   +2 more
doaj   +1 more source

On s-harmonic functions on cones [PDF]

open access: yesAnalysis & PDE, 2018
We deal with non negative functions satisfying \[ \left\{ \begin{array}{ll} (-Δ)^s u_s=0 & \mathrm{in}\quad C, u_s=0 & \mathrm{in}\quad \mathbb{R}^n\setminus C, \end{array}\right. \] where $s\in(0,1)$ and $C$ is a given cone on $\mathbb R^n$ with vertex at zero.
Terracini, S, Tortone, G, Vita, S
openaire   +6 more sources

Directional Convexity of Convolutions of Harmonic Functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2019
Harmonic functions can be constructed using two analytic functions acting as their analytic and coanalytic parts but the prediction of the behavior of convolution of harmonic functions, unlike the convolution of analytic functions, proved to be ...
Jay M. Jahangiri, Raj Kumar Garg
doaj   +1 more source

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