BULLETIN OF THE KOREAN MATHEMATICAL SOCIETY, cilt.49, sa.4, ss.851-861, 2012 (SCI-Expanded)
In this paper, we define the notion of statistical A-summability for double sequences and find its relation with A-statistical convergence. We apply our new method of summability to prove a Korovkin-type approximation theorem for a function of two variables. Furthermore, through an example, it is shown that our theorem is stronger than classical and statistical cases.