ALKA MARWAHA, PhD, is Associate Professor, Jesus and Mary College, University of Delhi. With nearly three decades of teaching experience, she has taught mathematics courses, both at undergraduate and postgraduate levels. She has published several research papers in various international journals. She was the recipient of Commonwealth Scholarship to the prestigious Dalhousie University, Halifax, NovaScotia, Canada, where she did her PhD under the guidance of eminent mathematician Prof. Heydar Radjavi in Operator Theory.