Dr Md Nasiruzzaman at presently working as an associate Professor at the Department of Mathematics, Faculty of Science, University of Tabuk, KSA Dr Md Nasiruzzaman joined the Department of Mathematics, Faculty of Science, University of Tabuk, KSA University of Tabuk in October 2019 as an assistant professor Dr Md Nasiruzzaman has teaching and research experience as an Assistant Professor at the Department of Computer Science, School of Engineering Science, Jamia Hamdard, New Delhi, India, from 2016 to 2019 Dr Nasiruzzaman also has teaching and research experience as a lecturer in the Department of Mathematics, Faculty of Natural Science, Jamia Millia Islamia from 2016 to 2019 Dr Nasiruzzaman received his MSc in Mathematics & Computing from IIT Guwahati in 2012 and his PhD from AMU Aligarh in Mathematical Science in 2016 He has qualified for two national-level tests, IIT JAM and CSIR UGC NET, with all-India ranks 181 and 57 During his PhD year, he was awarded by BSR Fellowship He is an editorial board member of many journals and has published more than 65 research papers in Scopus/WOS-indexed journals His Google Scholar citation is more than 1180 with an h-index of 21 and an i10 index greater than 38 His area of research the Approximation Theory and Operator Theory are two of his main research He has reviewed more than 100 papers in SCI-indexed journals