Results 11 to 20 of about 5,501,393 (253)

Cubic spline interpolation of harmonic functions [PDF]

open access: yes, 1973
It is shown that for the two dimensional Laplace equation a univariate cubic spline approximation in either space direction together with a difference approximation in the other leads to the well-known nine-point finite-difference formula.
Whiteman, J R, Papamichael, N
core   +6 more sources

Coupling Harmonic Functions-Finite Elements for Solving the Stream Function-Vorticity Stokes Problem [PDF]

open access: yes, 2004
We consider the bidimensional Stokes problem for incompressible fluids in stream function-vorticity form. The classical finite element method of degree one usually used does not allow the vorticity on the boundary of the domain to be computed ...
Salaün, Michel   +2 more
core   +1 more source

Fast-individual-harmonic-extraction technique [PDF]

open access: yes, 2005
One outcome of a PhD project (C H Ng, University studentship) A collaborative work (the Energy Systems Group, Northumbria and Durham University). It deals with the problem of harmonic suppression or elimination in power systems for safety and power ...
Busawon, Krishna   +3 more
core   +1 more source

ON THE CONVERGENCE OF THE ERDOS HARMONIC SERIES [PDF]

open access: yes, 2003
The purpose of this article is to study the convergence of a few series with the Erdos function.
Tabirca, S., Tabirca, T.
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

ON THE CONVERGENCE OF THE EULER HARMONIC SERIES [PDF]

open access: yes, 2000
The aim oj this article is to study the convergence oj the Euler harmonic series. Firstly, the results concerning the convergence oj the Smaralldache and Erdos harmonic junctions are reviewed Secondly, the Euler harmonic series is proved to be convergent
Tabirca, Tatiana, Tabirca, Sabin
core   +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

Hubungan Algoritma Bezier dan B-Spline pada Fungsi Harmonisnya untuk Menciptakan Bentuk Kurva Sesuai Keinginan

open access: yesComTech, 2011
Computer graphics is a science widely used in any areas. Its up-to-date technique is applied to solve image problems related to needs of customer and decision-making.
Djunaidy Santoso   +2 more
doaj   +1 more source

Harmonic diffeomorphisms of noncompact surfaces and Teichmüller spaces [PDF]

open access: yes, 2002
Let g : M -> N be a quasiconformal harmonic diffeomorphism between noncompact Riemann surfaces M and N. In this paper we study the relation between the map g and the complex structures given on M and N.
Markovic, V. (Vladimir)   +1 more
core   +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

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