The College of Education for Pure Sciences at the University of Basrah  organized a scientific lecture entitled (Multiple Approximation Using Optimization of Normal Szasz Effects with the Teacher)
The lecture presented by the student (Thani Abdel-Majid Abdel-Qader) included
An improvement of the usual Szasz effects based on the parameter s and the study of the phenomena of multiple approximation (approximation of the derivatives of functions by the derivatives of their corresponding operators) and finding the Fronovsky formula and deriving the order of the approximation theoretically which is O(n^(-(2s+1)) ) where s>(-1) /2. This study was also supported by a numerical example and a discussion of the obtained results.