Results 31 to 40 of about 626,730 (186)

Some Properties and Graphical Applications of a New Subclass of Harmonic Functions Defined by a Differential Inequality

open access: yesMathematics
This paper establishes new results related to geometric function theory by presenting a new subclass of harmonic functions with complex values within the open unit disk, characterized by a second-order differential inequality.
Sibel Yalçın   +2 more
doaj   +1 more source

DONKIN'S DIFFERENTIAL OPERATORS FOR HOMOGENEOUS HARMONIC FUNCTIONS

open access: yesSt. Petersburg Polytechnical University Journal: Physics and Mathematics, 2019
The work continues the study of Donkin operators for homogeneous harmonic functions. Previously, a basic list of such first-order operators for three-dimensional harmonic functions was obtained.
Berdnikov Alexander   +3 more
doaj   +1 more source

Some Liouville Theorems on Finsler Manifolds

open access: yesMathematics, 2019
We give some Liouville type theorems of L p harmonic (resp. subharmonic, superharmonic) functions on a complete noncompact Finsler manifold.
Minqiu Wang, Songting Yin
doaj   +1 more source

Harmonic Labeling of Graphs [PDF]

open access: yes, 2010
Which graphs admit an integer value harmonic function which is injective and surjective onto $\Z$? Such a function, which we call harmonic labeling, is constructed when the graph is the $\Z^2$ square grid.
Benjamini, Itai   +3 more
core  

Geometric properties of harmonic functions associated with the symmetric conjecture points and exponential function

open access: yesAIMS Mathematics, 2020
In this paper, some classes of univalent harmonic functions are introduced by subordination, where the analytic parts of which are exponential starlike (or convex) functions with respect to the symmetric conjecture points.
Lina Ma, Shuhai Li, Huo Tang
doaj   +1 more source

Zum Verhältnis von Harmonik und Instrumentation ›vor Wagner‹ [PDF]

open access: yesZeitschrift der Gesellschaft für Musiktheorie, 2014
Bereits in Kompositionen aus der Mitte des 18. Jahrhunderts lassen sich Akkorde finden, deren harmonische Funktionen nicht allein durch Merkmale begründet werden, die in den Bereich tonaler Kategorien fallen (wie Akkordtyp, Stufenrelation, Beziehung auf ...
Michael Polth
doaj   +1 more source

H-Shaped Slot Antenna with Harmonic Tuning Function and Integrated Power Amplifier

open access: yesEnergies, 2023
This study proposes a patch antenna with an H-shaped slot with direct matching and harmonic tuning (rejection) functions for microwave power transfer. This antenna enables an integrated active antenna in which the power amplifier and antenna are directly
Yuto Narita   +4 more
doaj   +1 more source

Lengths, areas and Lipschitz-type spaces of planar harmonic mappings [PDF]

open access: yes, 2013
In this paper, we establish a three circles type theorem, involving the harmonic area function, for harmonic mappings. Also, we give bounds for length and area distortion for harmonic quasiconformal mappings. Finally, we will study certain Lipschitz-type
Chen, Shaolin   +2 more
core  

Graphs of bounded degree and the $p$-harmonic boundary

open access: yes, 2010
Let $p$ be a real number greater than one and let $G$ be a connected graph of bounded degree. In this paper we introduce the $p$-harmonic boundary of $G$.
Puls, Michael J.
core   +2 more sources

Trend Assessment for a CO2 and CH4 Data Series in Northern Spain

open access: yesProceedings, 2017
The main objective of this paper is to implement different methods to assess the salient features of the data trend for a CO2 and CH4 data series. Said series was obtained at the Low Atmosphere Research Centre (41°48′49″ N, 4°55′59″ W) using a Picarro ...
Beatriz Fernández-Duque   +4 more
doaj   +1 more source

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