Thesis. M.S. American University of Beirut. Department of Mathematics, 2017. T:6647
Advisor : Dr. Nabil Nassif, Professor, Mathematics ; Committee members : Dr. Ghassan Antar, Assiociate Professor, Physics ; Dr. Rony Touma , Assiociate Professor, Mathematics, LAU ; Dr. Sophie Moufawad, Assistant Professor, Mathematics.
Includes bibliographical references (leaves 38- 40)