Results 41 to 50 of about 54,203 (295)
Ideal Convergence of k-Positive Linear Operators
We study some ideal convergence results of k-positive linear operators defined on an appropriate subspace of the space of all analytic functions on a bounded simply connected domain in the complex plane.
Akif Gadjiev +2 more
doaj +1 more source
ELEMENTARY SOLUTIONS OF A HOMOGENEOUS Q-SIDED CONVOLUTION EQUATION
Spectral synthesis on the complex plane related to solutions of some homogeneous equations of convolution type. There is a method to obtain solutions: we describe the elementary solutions set of the equation (spectral analysis) and prove the ...
Tatarkin A . A . +1 more
doaj +1 more source
On one rational integral operator of Fourier – Chebyshev type and approximation of Markov functions
The purpose of this paper is to construct an integral rational Fourier operator based on the system of Chebyshev – Markov rational functions and to study its approximation properties on classes of Markov functions. In the introduction the main results of
Pavel G. Patseika +2 more
doaj +1 more source
Analyzing Vortex Light Beam Scattering Characteristics from a Random Rough Surface
The propagation and scattering of vortex light beams in complex media have significant implications in the fields of laser imaging, optical manipulation, and communication. This paper investigates the scattering characteristics of vortex light beams from
Xiaoxiao Zhang +3 more
doaj +1 more source
An approximation problem with a new characteristic and a problem on mean approximation on arcs in a complex plane [PDF]
Summary: In the paper, classical approximation theorems are investigated on the curves in a complex domain. In particular, direct and inverse theorems are cited on the curves \(\Gamma\) in a complex domain in the metric \(L_p(\Gamma)\). The obtained results remain new on the segment \([-1,1]\) as well.
Mamedkhanov, Jamal, Dadashova, Irada
openaire +1 more source
ABSTRACT Background Children with acute lymphoblastic leukemia (ALL) are at risk of severe outcomes from SARS‐CoV‐2 (SCV2). In the post‐pandemic context, where most children have been infected with SCV2, there are limited data on whether vaccination remains beneficial in children with ALL.
Janna R. Shapiro +11 more
wiley +1 more source
Approximation of classes of Poisson integrals by Fejer means
The paper is devoted to the investigation of problem of approximation of continuous periodic functions by trigonometric polynomials, which are generated by linear methods of summation of Fourier series.
O. Rovenska
doaj +1 more source
ABSTRACT Background Pediatric sarcomas are a heterogeneous group of tumors that contribute disproportionately to cancer mortality in children. Although congenital anomalies are among the strongest known risk factors for childhood cancer, the risk of specific sarcoma subtypes among affected individuals has not yet been thoroughly evaluated. Procedure We
Russ Wolters +17 more
wiley +1 more source
Effective R-Matrix Parameterizations for Nuclear Data* [PDF]
We derive an effective Reich-Moore approximation (RMA) of the Wigner-Eisenbud R-matrix formalism parameterized by complex-valued resonance energies and widths; this RMA exactly reproduces the total eliminated cross section.
Arbanas Goran +5 more
doaj +1 more source
Spline approximation of multivalued functions in linear structures routing
Objectives. The theory and methods of spline approximation of plane curves given by a sequence of points are currently undergoing rapid development.
D. A. Karpov, V. I. Struchenkov
doaj +1 more source

