Simultaneous approximation by Szász–Mirakjan–Stancu–Durrmeyer type operators

2016 ◽  
Vol 74 (1) ◽  
pp. 118-127 ◽  
Author(s):  
Vishnu Narayan Mishra ◽  
R. B. Gandhi
Keyword(s):  
Simultaneous Approximation ◽  
Durrmeyer Type Operators

scholarly journals Approximation by Jakimovski-Leviatan-Stancu-Durrmeyer type operators

Filomat ◽  
2019 ◽  
Vol 33 (6) ◽  
pp. 1517-1530 ◽  
Author(s):  
M. Mursaleen ◽  
Shagufta Rahman ◽  
Khursheed Ansari
Keyword(s):  
Upper Bound ◽  
Simultaneous Approximation ◽  
Approximation Theorem ◽  
Approximation Properties ◽  
Statistical Approximation ◽  
Durrmeyer Operators ◽  
Durrmeyer Type Operators

In the present paper, we introduce Stancu type modification of Jakimovski-Leviatan-Durrmeyer operators. First, we estimate moments of these operators. Next, we study the problem of simultaneous approximation by these operators. An upper bound for the approximation to rth derivative of a function by these operators is established. Furthermore, we obtain A-statistical approximation properties of these operators with the help of universal korovkin type statistical approximation theorem.

scholarly journals Exponential moments and simultaneous approximation properties for Durrmeyer type operators with weights of Szasz basis functions

Filomat ◽  
2021 ◽  
Vol 35 (5) ◽  
pp. 1465-1475
Author(s):  
Antonio-Jesús López-Moreno ◽  
Vijay Gupta
Keyword(s):  
Exponential Type ◽  
Exponential Growth ◽  
Simultaneous Approximation ◽  
Basis Functions ◽  
Approximation Properties ◽  
Exponential Functions ◽  
Quantitative Estimates ◽  
Exponential Moments ◽  
Durrmeyer Type Operators ◽  
Derivatives Of

The present paper deals with the approximation properties for exponential functions of general Durrmeyer type operators having the weights of Sz?sz basis functions. Here we give explicit expressions for exponential type moments by means of which we establish, for the derivatives of the operators, the Voronovskaja formulas for functions of exponential growth and the corresponding weighted quantitative estimates for the remainder in simultaneous approximation.

Simultaneous approximation by Szász–Mirakjan–Durrmeyer-type operators

2015 ◽  
Vol 8 (4) ◽  
pp. 297-305 ◽  
Author(s):  
Vishnu Narayan Mishra ◽  
R. B. Gandhi ◽  
Fadel Nasaireh
Keyword(s):  
Simultaneous Approximation ◽  
Durrmeyer Type Operators

Simultaneous approximation of a pair of conjugate functions

1983 ◽  
Vol 34 (5) ◽  
pp. 811-816
Author(s):  
A. I. Stepanets
Keyword(s):  
Simultaneous Approximation ◽  
Conjugate Functions

scholarly journals Simultaneous approximation in negative norms of arbitrary order

1981 ◽  
Vol 15 (3) ◽  
pp. 231-235 ◽  
Author(s):  
Hans-Peter Helfrich
Keyword(s):  
Simultaneous Approximation ◽  
Arbitrary Order

scholarly journals Best Simultaneous Approximation in Orlicz Spaces

2007 ◽  
Vol 2007 ◽  
pp. 1-7 ◽  
Author(s):  
M. Khandaqji ◽  
Sh. Al-Sharif
Keyword(s):  
Banach Space ◽  
Simultaneous Approximation ◽  
Closed Subspace ◽  
Orlicz Spaces ◽  
Unit Interval ◽  
Luxemburg Norm ◽  
Integrable Functions ◽  
Best Simultaneous Approximation ◽  
Distance Formula

LetXbe a Banach space and letLΦ(I,X)denote the space of OrliczX-valued integrable functions on the unit intervalIequipped with the Luxemburg norm. In this paper, we present a distance formula dist(f1,f2,LΦ(I,G))Φ, whereGis a closed subspace ofX, andf1,f2∈LΦ(I,X). Moreover, some related results concerning best simultaneous approximation inLΦ(I,X)are presented.

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