Dr. Arvind is a Professor in the Department of Mathematics at Hansraj College, University of Delhi. He has a distinguished career, including 5 years of experience as a Scientist at DRDO. With 20 years of teaching and research experience, Dr. Arvind has made significant contributions to the fields of Cryptography, Information Security, and Algebra. His research has been published in reputed National and International Journals, showcasing his expertise and commitment to advancing mathematical knowledge. He has authored two acclaimed books on Mathematics, namely Calculus and Numerical Methods, which are widely appreciated by students and educators alike. Dr. Arvind has successfully completed two research projects funded by the University of Delhi and continues to guide aspiring researchers as a mentor in the Department of Mathematics, University of Delhi.