Institution: | 1.Department of Mathematics, Faculty of Art and Science, University of Marmara, 34722, Kad?k?y, Istanbul, Turkey ;2.Instituto Universitario de Matemática Pura y Aplicada, Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain ;3.Department of Mathematics, Faculty of Art and Science, Yildiz Technical University, 34349, Esenler, Davutpasa, Istanbul, Turkey ; |