Results 21 to 30 of about 476,746 (208)

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

Modeling the electrostatic field of a charged ring located inside an infinite cylinder in the presence of a torus

open access: yesInformatika, 2023
Objectives. Analytical solution of the boundary value problem of electrostatics for modeling the electrostatic field of a charged ring located inside a grounded infinite circular cylinder in the presence of a perfectly conducting torus is considered. The
G. Ch. Shushkevich
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

Transformation Method for Solving System of Boolean Algebraic Equations

open access: yesMathematics, 2021
In recent years, various methods and directions for solving a system of Boolean algebraic equations have been invented, and now they are being very actively investigated. One of these directions is the method of transforming a system of Boolean algebraic
Dostonjon Barotov   +6 more
doaj   +1 more source

Multiply Harmonic Functions [PDF]

open access: yesNagoya Mathematical Journal, 1966
Let Ω and Ω′ be two locally compact, connected Hausdorff spaces having countable bases. On each of the spaces is defined a system of harmonic functions satisfying the axioms of M. Brelot [2]. The following is the description of such a system. To each open set of Ω is assigned a vector space of finite continuous functions, called the harmonic functions,
openaire   +4 more sources

Stiffness of Harmonic Functions [PDF]

open access: yesProceedings of the American Mathematical Society, 1979
Harmonic functions cannot change rapidly. For example, if K is a compact subset of a Riemann surface R and {u} a family of harmonic functions u on R of nonconstant sign on K, then it is known that there exists a constant q ∈ ( 0 , 1 ) q \in (0,1) independent of u such that
openaire   +2 more sources

Optimal bounds for ancient caloric functions

open access: yes, 2021
For any manifold with polynomial volume growth, we show: The dimension of the space of ancient caloric functions with polynomial growth is bounded by the degree of growth times the dimension of harmonic functions with the same growth.
Colding, Tobias Holck   +1 more
core   +1 more source

Polylinear Transformation Method for Solving Systems of Logical Equations

open access: yesMathematics, 2022
In connection with applications, the solution of a system of logical equations plays an important role in computational mathematics and in many other areas.
Dostonjon Numonjonovich Barotov   +1 more
doaj   +1 more source

Harmonic spirallike functions and harmonic strongly starlike functions

open access: yesMonatshefte für Mathematik, 2022
Harmonic functions are natural generalizations of conformal mappings. In recent years, a lot of work have been done by some researchers who focus on harmonic starlike functions. In this paper, we aim to introduce two classes of harmonic univalent functions of the unit disk, called hereditarily $ $-spirallike functions and hereditarily strongly ...
Xiu-Shuang Ma   +2 more
openaire   +2 more sources

All functions are locally $s$-harmonic up to a small error [PDF]

open access: yes, 2014
We show that we can approximate every function $f\in C^{k}(\bar{B_1})$ with a $s$-harmonic function in $B_1$ that vanishes outside a compact set. That is, $s$-harmonic functions are dense in $C^{k}_{\rm{loc}}$.
Dipierro, Serena   +2 more
core   +4 more sources

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