11 Şubat 201823 Eylül 2022 by ayener Assoc. Prof. Abdullah Yener Department of Mathematics Istanbul Commerce University Address: Sütlüce Mahallesi, İmrahor Caddesi, No: 90, Beyoğlu 34445, İstanbul, Turkey Phone: 02123144100/4639 Office: B109-Sütlüce Campus E-mail: ayener [at] ticaret.edu.tr, abdyener [at] hotmail.com