Browsing by Author "Testici, Ahmet"
Now showing items 19 of 9

Approximation by FaberLaurent rational functions in Lebesgue spaces with variable exponent
Israfilov, Daniyal M; Testici, Ahmet (Elsevıer Scıence Bv, 2016)Let Gamma be a rectifiable Dinismooth Jordan curve in the complex plane C. In this work the approximation properties of the FaberLaurent series expansions in the variable exponent Lebesgue spaces defined on the curve ... 
Approximation by matrix transforms in weighted lebesgue spaces with variable exponent
Israfilov, Daniyal M.; Testici, Ahmet (Springer Basel Ag, 2018)In this work the approximation properties of the matrix transforms of functions in the weighted variable exponent Lebesgue spaces are investigated. 
Approximation in weighted generalized grand Smirnov classes
Israfilov, Daniyal M.; Testici, Ahmet (Akademiai Kiado Rt., 2017)Let G be a finite simple connected domain in the complex plane C, bounded by a Carleson curve Γ := ∂G. In this work the direct and inverse theorems of approximation theory by the algebraic polynomials in the weighted ... 
Approximation problems in the lebesgue spaces with variable exponent
İsrafilov, Daniyal M.; Testici, Ahmet (Academic Press Inc Elsevier Science, 2018)In the variable exponent Lebesgue space, the rth modulus of smoothness (r = 1,2, ... ) is defined and in this term, the direct and inverse theorems of approximation theory are proved. Moreover, the constructive characterization ... 
Değişken üslü lebesgue uzaylarında yaklaşım problemleri
Testici, Ahmet (Balıkesir Üniversitesi Fen Bilimleri Enstitüsü, 2018)In this thesis study, approximation problems in variable exponent Lebesgue spaces are investigated. The first section comprises of introduction part. In the second section, basic concepts have been given, Lebesgue spaces ... 
Kompleks düzlemde yaklaşım teorisinin bazı problemleri
Testici, Ahmet (Balıkesir Üniversitesi Fen Bilimleri Enstitüsü, 2013)In this thesis which consists of five chapters, the direct and inverse theorems of approximation theory are investigated. The first chapter includes some information about the approximation theory and its progress. The ... 
Multiplier and approximation theorems in smirnov classes with variable exponent
İsrafilov, Daniyal; Testici, Ahmet (Scientific Technical Research Council TurkeyTubitak, 2018)Let G subset of C be a bounded Jordan domain with a rectifiable Dinismooth boundary F and let G() := ext Gamma. In terms of the higher order modulus of smoothness the direct and inverse problems of approximation theory ... 
Simultaneous approximation in lebesgue space with variable exponent
Israfilov, Daniyal; Testici, Ahmet (Inst Mathematics & Mechanics, 2018)In this paper we deal with the simultaneous approximations by trigonometric polynomials of 27 periodic functions in the variable exponent Lebesgue spaces. In terms of the higher moduli of smoothness the direct and inverse ... 
Some inverse and simultaneous approximation theorems in weighted variable exponent lebesgue spaces
Israfilov, Daniyal M.; Testici, Ahmet (Springer, 2018)In this work we prove some inverse and simultaneous approximation theorems in the weighted variable exponent Lebesgue space and discuss the constructive description problems in the generalized Lipschitz subclasses.