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On Simultaneous Approximation of Modified Baskakov Durrmeyer Operators  [PDF]
Prashantkumar Patel,Vishnu Narayan Mishra
Mathematics , 2015,
Abstract: In this present manuscript, we discuss properties of modified Baskakov-Durrmeyer-Stancu (BDS) operators with parameter $\gamma>0$. We compute the moments of these modified operators. Also, establish point-wise convergence, Voronovskaja type asymptotic formula and an error estimation in terms of second order modification of continuity of the function for the operators $B_{n,\gamma}^{\alpha,\beta}(f,x)$.
Some Approximation Properties of Modified Jain-Beta Operators  [PDF]
Vishnu Narayan Mishra,Prashantkumar Patel
Journal of Calculus of Variations , 2013, DOI: 10.1155/2013/489249
Abstract: Generalization of Szász-Mirakyan operators has been considered by Jain, 1972. Using these generalized operators, we introduce new sequences of positive linear operators which are the integral modification of the Jain operators having weight functions of some Beta basis function. Approximation properties, the rate of convergence, weighted approximation theorem, and better approximation are investigated for these new operators. At the end, we generalize Jain-Beta operator with three parameters , , and and discuss Voronovskaja asymptotic formula. 1. Introduction For ,?? , let then Equation (1) is a Poisson-type distribution which has been considered by Consul and Jain [1]. In 1970, Jain [2] introduced and studied the following class of positive linear operators: where and has been defined in (1). The parameter may depend on the natural number . It is easy to see that ; (3) reduces to the well-known Szász-Mirakyan operators [3]. Different generalization of Szász-Mirakyan operator and its approximation properties is studied in [4, 5]. Kantorovich-type extension of was given in [6]. Integral version of Jain operators using Beta basis function is introduced by Tarabie [7], which is as follows: In Gupta et al. [8] they considered integral modification of the Szász-Mirakyan operators by considering the weight function of Beta basis functions. Recently, Dubey and Jain [9] considered a parameter in the definition of [8]. Motivated by such types of operators we introduce new sequence of linear operators as follows: For and , where is defined in (1) and The operators defined by (5) are the integral modification of the Jain operators having weight function of some Beta basis function. As special case, the operators (5) reduced to the operators recently studied in [7]. Also, if and , then the operators (5) turn into the operators studied in [8]. In the present paper, we introduce the operators (5) and estimate moments for these operators. Also, we study local approximation theorem, rate of convergence, weighted approximation theorem, and better approximation for the operators . At the end, we propose Stancu-type generalization of (5) and discuss some local approximation properties and asymptotic formula for Stancu-type generalization of Jain-Beta operators. 2. Basic Results Lemma 1 (see [2]). For ,?? , one has Lemma 2. The operators , defined by (5) satisfy the following relations: Proof. By simple computation, we get Lemma 3. For , , and with , one has (i) ,(ii) ? . Lemma 4. For , , one has Proof. Since , , and , we have which is required. 3. Some Local Approximation
Some Approximation Properties of -Baskakov-Beta-Stancu Type Operators  [PDF]
Vishnu Narayan Mishra,Kejal Khatri,Lakshmi Narayan Mishra
Journal of Calculus of Variations , 2013, DOI: 10.1155/2013/814824
Abstract: This paper deals with new type -Baskakov-Beta-Stancu operators defined in the paper. First, we have used the properties of -integral to establish the moments of these operators. We also obtain some approximation properties and asymptotic formulae for these operators. In the end we have also presented better error estimations for the -operators. 1. Introduction In the recent years, the quantum calculus ( -calculus) has attracted a great deal of interest because of its potential applications in mathematics, mechanics, and physics. Due to the applications of -calculus in the area of approximation theory, -generalization of some positive operators has attracted much interest, and a great number of interesting results related to these operators have been obtained (see, for instance, [1–3]). In this direction, several authors have proposed the -analogues of different linear positive operators and studied their approximation behaviors. Also, Aral and Gupta [4] defined -generalization of the Baskakov operators and investigated some approximation properties of these operators. Subsequently, Finta and Gupta [5] obtained global direct error estimates for these operators using the second-order Ditzian Totik modulus of smoothness. To approximate Lebesgue integrable functions on the interval , modified Beta operators [6] are defined as where and . The discrete -Beta operators are defined as Recently, Maheshwari and Sharma [7] introduced the -analogue of the Baskakov-Beta-Stancu operators and studied the rate of approximation and weighted approximation of these operators. Motivated by the Stancu type generalization of -Baskakov operators, we propose the -analogue of the operators , recently introduced and studied for special values by Gupta and Kim [8] as where and . We know that and . We mention that (see [8]). Very recently, Gupta et al. [9] introduced some direct results in simultaneous approximation for Baskakov-Durrmeyer-Stancu operators. The aim of this paper is to study the approximation properties of a new generalization of the Baskakov type Beta Stancu operators based on -integers. We estimate moments for these operators. Also, we study asymptotic formula for these operators. Finally, we give better error estimations for the operator (3). First, we recall some definitions and notations of -calculus. Such notations can be found in [10, 11]. We consider as a real number satisfying . For , The -binomial coefficients are given by The -derivative of a function is given by The -analogues of product and quotient rules are defined as The -Jackson integrals and the
Simultaneous approximation with linear combination of integral Baskakov type operators
Thamer,Kareem J.; Al-Shibeeb,May A.; Ibrahem,A.I.;
Revista de la Uni?3n Matem??tica Argentina , 2005,
Abstract: the aim of the present paper is to study some direct results in simultaneous approximation for the linear combination of integral baskakov type operators.
Approximation degree for generalized integral operators
Jain,S.; Gangwar,R. K.;
Revista de la Uni?3n Matem??tica Argentina , 2009,
Abstract: very recently jain et al. [4] proposed generalized integrated baskakov operators and estimated some approximation properties in simultaneous approximation. in the present paper we establish the rate of convergence of these operators and its bezier variant, for functions which have derivatives of bounded variation.
Direct and Inverse Approximation Theorems for Baskakov Operators with the Jacobi-Type Weight
Guo Feng
Abstract and Applied Analysis , 2011, DOI: 10.1155/2011/101852
Abstract: We introduce a new norm and a new K-functional (;),. Using this K-functional, direct and inverse approximation theorems for the Baskakov operators with the Jacobi-type weight are obtained in this paper.
Approximation by Complex Baskakov-Szasz-Durrmeyer Operators in Compact Disks  [PDF]
Sorin G. Gal,Vijay Gupta
Mathematics , 2015, DOI: 10.4208/ata.2015.v31.n2.9
Abstract: In this paper, we deal with the complex Baskakov-Szasz-Durrmeyer mixed operators and study Voronovskaja type results with quantitative estimates for these operators attached to analytic functions of exponential growth in the open disk of radius R. Also, the exact order of approximation is found. The method used allows to construct complex Szasz-type and Baskakov-type approximation operators without involving the values on the positive real axis.
Approximation properties by generalized Baskakov Kantorovich Stancu type operators  [PDF]
Abdul Wafi,Nadeem Rao
Mathematics , 2015,
Abstract: In this paper, we introduce generalized Baskakov Kantorovich Stancu type operators and investigate direct result, local approximation and weighted approximation properties of these operators. Modulus of continuity, second modulus of continuity, Peeters K-functional, weighted modulus of continuity and Lipschitz class are considered to prove our results.
On statistical approximation properties of $q$-Baskakov-Szasz-Stancu operators  [PDF]
Vishnu Narayan Mishra,Preeti Sharma,Lakshmi Narayan Mishra
Mathematics , 2015,
Abstract: In the present paper, we consider Stancu type generalization of Baskakov-Sz\'{a}sz operators based on the q-integers and obtain statistical and weighted statistical approximation properties of these operators. Rates of statistical convergence by means of the modulus of continuity and the Lipschitz type maximal function are also established for operators.
Some Approximation Properties of the Generalized Baskakov operators  [PDF]
Prashantkumar Patel,Vishnu Narayan Mishra,Mediha ?rkcü
Mathematics , 2015,
Abstract: The present paper deals with a generalization of the Baskakov operators. Some direct theorems, asymptotic formula and $A$-statistical convergence are established. Our results are based on a $\rho$ function. These results include the preservation properties of the classical Baskakov operators.
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