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Boundary behavior p-harmonic functions in the Heisenberg group [PDF]

open access: yes, 2010
We study the boundary behavior of nonnegative p-harmonic functions which vanish on a portion of the boundary of a domain in the Heisenberg group H^n. Our main results are: 1) An estimate from above which shows that, under suitable geometric assumptions ...
Cong Phuc, Nguyen, Nicola Garofalo
core   +1 more source

On the asymptotic events of a Markov chain

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1979
In this paper we investigate some structure properties of the tail σ-field and the invariant σ-field of both homogeneous and nonhomogeneous Markov chains as representations for asymptotic events, descriptions of completely nonatomic and atomic sets and ...
Harry Cohn
doaj   +1 more source

Further result on Dirichlet-Sch type inequality and its application

open access: yesJournal of Inequalities and Applications, 2017
In this paper we deal with a theoretical question raised in connection with the application of Dirichlet-Sch type inequality, obtained by Huang (Int. Math. J.
Liquan Wan
doaj   +1 more source

An extremal harmonic function [PDF]

open access: yesProceedings of the American Mathematical Society, 1969
surface 3x=h-'(X) and D(u; X) for the Dirichlet integral over the region ix bounded by a and fi. The main result of this paper is the inequality: maxhJ|Qx=m(h; X)=D(h; X)
openaire   +1 more source

Human brain networks function in connectome-specific harmonic waves

open access: yesNature Communications, 2016
A key characteristic of human brain activity is coherent, spatially distributed oscillations forming behaviour-dependent brain networks. However, a fundamental principle underlying these networks remains unknown.
S. Atasoy, I. Donnelly, J. Pearson
semanticscholar   +1 more source

The tri-harmonic Neumann problem

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2018
In this article investigated the tri-harmonic Neumann function for the unit dics. For harmonics functions the Neumann’s boundary problem is well studied and solved under certain conditions through Neumann’s function, sometimes it is also called Green’s ...
S. Burgumbayeva
doaj   +1 more source

Inequalities of harmonic univalent functions with connections of hypergeometric functions

open access: yesOpen Mathematics, 2015
Let SH be the class of functions f = h+g that are harmonic univalent and sense-preserving in the open unit disk U = { z : |z| < 1} for which f (0) = f'(0)-1=0. In this paper, we introduce and study a subclass H( α, β) of the class SH and the subclass NH(
Sokół Janusz   +3 more
doaj   +1 more source

Revisiting Taibleson's theorem

open access: yesElectronic Research Archive, 2022
A new characterization of the weighted Taibleson's theorem for generalized Hölder spaces is given via a Hadamard-Liouville type operator (Djrbashian's generalized fractional operator).
Humberto Rafeiro, Joel E. Restrepo
doaj   +1 more source

Harmonic Stability in Power Electronic-Based Power Systems: Concept, Modeling, and Analysis

open access: yesIEEE Transactions on Smart Grid, 2019
The large-scale integration of power electronic-based systems poses new challenges to the stability and power quality of modern power grids. The wide timescale and frequency-coupling dynamics of electronic power converters tend to bring in harmonic ...
Xiongfei Wang, F. Blaabjerg
semanticscholar   +1 more source

An Analytical Dataset of Approaches to V in Mozart

open access: yesEmpirical Musicology Review, 2023
Tonal functions—tonic, pre-dominant, and dominant—are a standard feature of North American music theory. The pre-dominant (PD) encompasses the largest number of chords, varying in quality and scale degrees; unlike the tonic and dominant functions, it is ...
Jenine Brown, Daphne Tan, Michelle Lin
doaj   +1 more source

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