Dr. Debraj Chakrabarti is an Assistant Professor of Mathematics in Central Michigan University, Mt.Pleasant, USA. He is a very good person, a wonderful teacher and a brilliant mathematician. He had done B.Tech from IIT Kharagpur, India and thereafter he completed his masters and PhD in Mathematics from University of Wisconsin, USA. Before joining Central Michigan University, he had served as a faculty in IIT Bombay and also in TIFR-CAM (TIFR Centre for Applicable Mathematics, Bengaluru). More info about him can be found in his homepage. Dr. Chakrabarti has kindly consented to provide Gonit Sora his most valuable time in the form of an interesting article “Commutativity and non-commutativity in Mathematics”. We thank him for this.
The article can be downloaded here.