Results 31 to 40 of about 54,457 (295)
Complex approximation by real approximation [PDF]
مجلة جامعة الانبار للعلوم الصرفةIt is known that approximation of the complex functions does not, in general, depend on approximation of the real functions. However, if the complex function is viewed as a Cartesian product of two real functions, a relationship appears between the two ...
Jawad Judy
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Approximation by Zygmund means in variable exponent Lebesque spaces [PDF]
Mathematica Moravica, 2019 In the present work we investigate the approximation of the functions by the Zygmund means in variable exponent Lebesgue spaces. Here the estimate which is obtained depends on sequence of the best approximation in Lebesgue spaces with variable exponent ...
Jafarov Sadulla Z.
doaj
Harmonic Version of Jackson's Theorem in the Complex Plane [PDF]
, 1997 The classical Jackson theorem concerning polynomial approximation of functions on [−1, 1] is generalized to the case of approximation of functions given on a piecewise smooth arc in the complex plane by harmonic ...
Andrievskii, Vladimir
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Stable approximation of Helmholtz solutions in the disk by evanescent plane waves [PDF]
, 2023 Superpositions of plane waves are known to approximate well the solutions of the Helmholtz equation. Their use in discretizations is typical of Trefftz methods for Helmholtz problems, aiming to achieve high accuracy with a small number of degrees of ...
Moiola, Andrea +5 more
core +2 more sources
Generalized weighted Sobolev spaces and applications to Sobolev orthogonal polynomials, I [PDF]
, 2004 36 pages, no figures.-- MSC2000 codes: 41A10, 46E35, 46G10.-- Part II of this paper published in: Approx. Theory Appl. 18(2): 1-32 (2002), available at: http://e-archivo.uc3m.es/handle/10016/6483MR#: MR2047389 (2005k:42062)Zbl#: Zbl 1081.42024In this ...
Pestana, Domingo +3 more
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Ideal Convergence of k-Positive Linear Operators
Journal of Function Spaces and Applications, 2012 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
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ELEMENTARY SOLUTIONS OF A HOMOGENEOUS Q-SIDED CONVOLUTION EQUATION
Проблемы анализа, 2018 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
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Methods of Spline Functions in Solving Problems of Telecommunication and Information Technologies
Proceedings of the International Conference on Applied Innovations in IT, 2023 The solution to problems of telecommunications and information technologies using spline approximation and spline extrapolation based on real and complex spline functions is considered.
Irina Strelkovskaya +2 more
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An approximation problem with a new characteristic and a problem on mean approximation on arcs in a complex plane [PDF]
Journal of Classical Analysis, 2014 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
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Children with sickle cell disease (SCD) face multiple acute and chronic medical complications that may impact their quality of life as reported by patients themselves. Health‐related social needs (HRSNs), such as food and housing insecurity, are common in people with SCD, but the association between HRSNs and patient‐reported ...
Sarah J. Marks +5 more
wiley +1 more source