Seminars at HRI 1. Introduction to Elliptic Curves  November 2009 2. Elliptic Curves over Finite Fields  Hasse's Theorem  May 2010 3. Introduction to Elliptic Curve Cryptography  November 2010 4. Arithmetical Functions over the ring of Gaussian integers  August 2012 5. Set of Uniqueness for arithmetical functions  July 2013 6. Quasiuniqueness of the set of "Gaussian prime plus one's"  June 2014 Other Lectures/Talks  Gave a course on `Cryptography' in Refresher course for college lecturers during October 9th to 12th, 2014 at Kerala School of Mathematics, Calicut.
 Conducted couple of tutorial sessions on Algebra in Summer Program in Mathematics (SPIM 2013) during June 17th 2013 to July 5th 2013 at HarishChandra Research Institute, Allahabad.
 Taught a course on Set Topology in Summer Program in Mathematics (SPIM 2012) during June 16th, 2012 to July 4th, 2012 at HarishChandra Research Institute, Allahabad.
 Conducted couple of tutorial sessions on Number Theory in Summer Program in Mathematics (SPIM 2012) during June 16th, 2012 to July 4th, 2012 at HarishChandra Research Institute, Allahabad.
 Gave a couple of tutorials in Advanced Training Schools in Mathematics for Lectures (ATML) on number theory held from Dec. 22nd, 2011 to Jan. 5th, 2012 at HarishChandra Research Institute, Allahabad.
 Took Tutorials on Warings Problem in Winter School on Number Theory by Prof. Ram Murty during December 13th to December 17th, 2011 at Indian Institute of Science Education and Research (IISERK), Kolkata.
 Lectured on Introduction to Theory of Numbers during November 15th to November 25th, 2011 at Department of Mathematics, Tribhuvan University, Nepal.
 Taken a course on Topology in Summer Program in Mathematics (SPIM 2011) during June 27th to June 30th, 2011, at HarishChandra Research Institute, Allahabad.
