Results 81 to 90 of about 574,412 (205)

Dynamics of inequalities in geometric function theory

open access: yesJournal of Inequalities and Applications, 2001
A domain in the complex plane which is star-like with respect to a boundary point can be approximated by domains which are star-like with respect to interior points. This approximation process can be viewed dynamically as an evolution of the null points
Reich Simeon, Elin Mark, Shoikhet David
doaj  

Dielectric functions of thermal electrons polarization of dry atmosphere (up to the heights plane of 12 km)

open access: yesГеофизический журнал, 2014
Spatial dispersion of complex dielectric permeability e = e + ih of a subsystem of thermal electrons and ions of standard dry atmosphere in approximation of average self-consistent electric field based on the right part of sh-Poisson equation is ...
T.A. Belyi, Yu. Zelenin
doaj   +1 more source

A QPTAS for Maximum Weight Independent Set of Polygons with Polylogarithmically Many Vertices

open access: yes, 2013
The Maximum Weight Independent Set of Polygons problem is a fundamental problem in computational geometry. Given a set of weighted polygons in the 2-dimensional plane, the goal is to find a set of pairwise non-overlapping polygons with maximum total ...
Adamaszek, Anna, Wiese, Andreas
core   +1 more source

A Two-Stage Numerical Algorithm for the Simultaneous Extraction of All Zeros of Meromorphic Functions

open access: yesAppliedMath
In this paper, we present an effective two-stage numerical algorithm for the simultaneous finding of all roots of meromorphic functions in a region within the complex plane. At the first stage, we construct a polynomial with the same roots as the ones of
Ivan K. Ivanov, Stoil I. Ivanov
doaj   +1 more source

Comparison of different approaches to the numerical calculation of the LMJ focal

open access: yesEPJ Web of Conferences, 2013
The beam smoothing in the focal plane of high power lasers is of particular importance to laser-plasma interaction studies in order to minimize plasma parametric and hydrodynamic instabilities on the target.
Bourgeade A., Coïc H., Goossens J.-P.
doaj   +1 more source

Dielectric function and plasmons of doped three-dimensional Luttinger semimetals

open access: yes, 2019
Luttinger semimetals are three-dimensional electron systems with a parabolic band touching and an effective total spin $J=3/2$. In this paper, we present an analytical theory of dielectric screening of inversion-symmetric Luttinger semimetals with an ...
Mauri, Achille, Polini, Marco
core   +1 more source

Electron localization : band-by-band decomposition, and application to oxides

open access: yes, 2002
Using a plane wave pseudopotential approach to density functional theory we investigate the electron localization length in various oxides. For this purpose, we first set up a theory of the band-by-band decomposition of this quantity, more complex than ...
A.A. Aligia   +33 more
core   +1 more source

On the Combination of the Laplace Transform and Integral Equation Method to Solve the 3D Parabolic Initial Boundary Value Problem

open access: yesAxioms
We consider a two-step numerical approach for solving parabolic initial boundary value problems in 3D simply connected smooth regions. The method uses the Laplace transform in time, reducing the problem to a set of independent stationary boundary value ...
Roman Chapko, Svyatoslav Lavryk
doaj   +1 more source

Constructive Function Theory on Sets of the Complex Plane through Potential Theory and Geometric Function Theory

open access: yes, 2006
This is a survey of some recent results concerning polynomial inequalities and polynomial approximation of functions in the complex plane. The results are achieved by the application of methods and techniques of modern geometric function theory and ...
Andrievskii, Vladimir
core   +2 more sources

On approximating the nearest \Omega-stable matrix

open access: yes, 2019
In this paper, we consider the problem of approximating a given matrix with a matrix whose eigenvalues lie in some specific region \Omega, within the complex plane. More precisely, we consider three types of regions and their intersections: conic sectors,
Choudhary, Neelam   +2 more
core   +1 more source

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