Login New user?   06- TWMS Journal of Pure and Applied Mathematics An International Journal   TWMS Home   Submit an Article   Content   Forthcoming Papers   Subscription Author     Name : A.M. AHMED Address : Department of Mathematics, Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt Email : ahmedelkb@yahoo.com Telephone :   Home   About us   News   Journals   Conferences Contact us Copyright naturalspublishing.com. All Rights Reserved