Bivariate-Schurer-Stancu operators based on (p, q)-integers


Nadeem Rao, Abdul Wafi




The aim of this article is to introduce a bivariate extension of Schurer-Stancu operators based on (p, q)-integers. We prove uniform approximation by means of Bohman-Korovkin type theorem, rate of convergence using total modulus of smoothness and degree of approximation via second order modulus of soothness, Peetre's K-functional, Lipschitz type class.