Results 31 to 40 of about 74 (69)

Quantitative uniform approximation by generalized discrete singular operators [PDF]

open access: yes, 2015
Here we study the approximation properties with rates of generalized discrete versions of Picard, Gauss-Weierstrass, and Poisson-Cauchy singular op- erators. We treat both the unitary and non-unitary cases of the operators above.
KESTER, Merve, ANASTASSIOU, George A.
core  

A New Characterization of Weighted Peetre K-Functionals (II) [PDF]

open access: yes, 2007
2000 Mathematics Subject Classification: 46B70, 41A25, 41A17, 26D10. ∗Part of the results were reported at the Conference “Pioneers of Bulgarian Mathematics”, Sofia, 2006.Certain types of weighted Peetre K-functionals are characterized by means of the ...
Draganov, Borislav, Ivanov, Kamen
core  

Неравенства от тип на Дафин и Шефер II

open access: yes, 2003
[Nikolov Geno; Николов Гено]Mathematics Subject Classification: 41A05 ...
Nikolov, Geno
core  

Теглова апроксимация с операторите на Майер-Кьониг и Целер

open access: yes, 2015
[Gadjev Ivan; Гаджев Иван]AMS Subject Classification : 41A36, 41A25, 41A27 ...
Gadjev, Ivan
core  

Overiteration of d-variate tensor product Bernstein operators: A quantitative result (Dedicated to the memory of Professor Sorin Gal)

open access: yes
Extending an earlier estimate for the degree of approximation of over iterated univariate Bernstein operators towards the same operator of degree one, it is shown that an analogous result holds in the d-variate case.
ACU, Ana-Maria, GONSKA, Heiner
core   +1 more source

Richards's curve induced Banach space valued ordinary and fractional neural network approximation. [PDF]

open access: yesRev R Acad Cienc Exactas Fis Nat A Mat, 2023
Anastassiou GA, Karateke S.
europepmc   +1 more source

Global smoothness of approximating functions

open access: yes, 1991
We investigate the conditions under which global smoothness of a function f (as measured by its modulus of continuity) is retained by the elements of approximating sequences (Lnf).
Anastassiou, George A.   +2 more
core   +1 more source

Global smoothness preservation and simultaneous approximation by multivariate discrete operators: Dedicated to Professor Gheorghe Coman on the occasion of his 80th anniversary

open access: yes, 2016
In this article we study the multivariate generalized discrete singular operators defined on R N , N ≥ 1, regarding their simultaneus global smoothness preservation property with respect to Lp norm for 1 ≤ p ≤ ∞, by using higher order moduli of ...
KESTER, Merve, ANASTASSIOU, George A.
core  

Conformable fractional approximation by max-product operators

open access: yes, 2018
Here we study the approximation of functions by a big variety of Maxproduct operators under conformable fractional differentiability. These are positive sublinear operators. Our study is based on our general results about positive sublinear operators. We
George A. Anastassiou   +1 more
core   +1 more source

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