Oktay Duman is a faculty member at TOBB Economics and Technology University, Ankara, Türkiye. He currently serves as the Dean of the Faculty of Arts and Sciences and as the Head of the Department of Mathematics at the same institution. He earned his PhD in Mathematics from Ankara University, Türkiye, in 2003, and he had a visiting period at the University of Central Florida, USA, in 2016. In recognition of his contributions to approximation theory, he was elected as a Full Member of the Turkish Academy of Sciences in 2020.
Esra Erkus-Duman is a Full Professor at Gazi University, Türkiye, with a PhD and a Master's degree in Mathematics obtained in 2005 from Ankara University, Türkiye. Previously, she held positions as an Associate Professor (2010-2017) and an Assistant Professor (2007-2010) at Gazi University, Türkiye. In 2015, she was a visiting professor at the University of Central Florida, USA. Her research focuses on special functions.