Journal of the Egyptian Mathematical Society EDITORIAL BOARD

Editor-in-Chief Co-Editor-in-Chief

A.-S.F. Obada M. Asaad Al-Azhar University, Cairo, Egypt Cairo University, Cairo, Egypt E-mail: [email protected] E-mail: [email protected] Associate Editors

M. E. Abd El-Monsef E. H. Doha M. S. Moslehian Tanta University, Tanta, Egypt Cairo University, Cairo, Egypt Ferdowsi University of Mashhad, Iran E-mail: [email protected] E-mail: [email protected] E-mail: [email protected], M. M. A. Ahmed A. M. El-Sayed [email protected] Al-Azhar University, Cairo, Egypt Banha University, Egypt S. H. Saker E-mail: [email protected], E-mail: [email protected], Mansoura University, Egypt [email protected] [email protected] E-mail: [email protected], S. M. El-Sayed A. Ballester-Bolinches [email protected] Alexandria University, Egypt Universitat de Vale` ncia, Moline, Spain C. Tunc E-mail: [email protected], E-mail: [email protected] Yuzuncu Yil University, Turkey [email protected] E-mail: [email protected], H. Barakat A. Facchini [email protected] Zagazig University, Zagazig, Egypt University of Padova, Italy E-mail: [email protected] E-mail: [email protected] M. Bohner M. A. Helal Missouri S&T, Rolla, MO 65409, USA Cairo University, Cairo, Egypt E-mail: [email protected] E-mail: [email protected]

Managing Editor M. Abdel Aty Sohag Univesity, Sohag, Egypt E-mail: [email protected]

Editors N. A. Abdel-All F. Ghaleb A. N. Skiba Assiut University, Assiut, Egypt Ain Sham University, Cairo, Egypt Francisk Skorina Gomel State University, Gomel, E-mail: [email protected] E-mail: [email protected] Belarus E-mail: [email protected] M. Ahsanullah A. Ghaleb Rider University, New Jersey, USA Cairo University, Cairo, Egypt I. M. Stancu-Minasian E-mail: ahsan@rider,edu E-mail: [email protected] "Gheoghe Mihoc-Caius Iacob" Institute of M. Guedda Mathematical Statistics and Applied Mathematics N. M. Allam of the Romanian Academy, Bucharest, Romania Mansoura University, Mansoura, Egypt University of Picardie Jules Verne, Amiens, France E-mail: [email protected] E-mail: [email protected]; E-mail: [email protected] [email protected] T. Hayat J. Andres Quaid-i-Azam University, Islamabad-Pakistan J. Stasheff Palacky University, Olomouc, Czech Republic E-mail: [email protected] Lansdale, USA E-mail: [email protected] E-mail: [email protected] S. E. D. S. Hussein A. Biswas Ain Shams University, Egypt I. P. Stavroulakis Delaware State University, Dover, USA E-mail: [email protected] University of Ioannina, Ioannina, Greece E-mail: [email protected] E-mail: [email protected] S. Jafari M. Elhamdadi College of Vestsjaelland South, Slagelse, Denmark N. H. Sweilam University of South Florida, Tampa, USA E-mail: [email protected] Cairo University, Cairo, Egypt E-mail: [email protected] E-mail: [email protected] A. Kandil J. J. Trujillo M. F. A. El-Sabbagh Helwan University, Egypt Universidad de La Laguna, Tenerife, Spain Minia University, Minia, Egypt E-mail: [email protected] E-mail: [email protected] E-mail: [email protected] M. Kirane L. S. Valerievich M. H. Fahmy University of La Rochelle, La Rochelle, France E-mail: [email protected] Mordovian State University, Saransk, Russia. Suz Canal University, Isamellia, Egypt E-mail: [email protected] E-mail: [email protected] G. M. Mahmoud Assiut University, Assiut, Egypt Y. Yayli V. V. Fedorchuk E-mail: [email protected] Ankara University, Ankara, Turkey Moscow, Russia E-mail: [email protected] E-mail: [email protected] M. A. Noor COMSATS Institute of Information Technology, H. Yehia J. Fleckinger Islamabad, Pakistan Mansoura University, Mansoura, Egypt University Toulouse (Math Institute), France E-mail: [email protected], E-mail: [email protected] E-mail: jfl[email protected] [email protected] K. Zimmermann M. Fontana A. S. Okb El-Bab Charles University, Prague, Czech Republic Universita’ degli Studi, Leonardo Murialdo, Italy Al-Azhar University, Cairo, Egypt E-mail: [email protected]ff.cz E-mail: [email protected] E-mail: [email protected] D. Georgion R. M. Salem University of Patras, Patras, Greece Al-Azhar University, Cairo, Egypt E-mail: [email protected] E-mail: [email protected]