Institutional and Instructional Programme on Discrete Mathematics, Ramanujan Institute for Advanced Study in Mathematics, University of Madras, February 3-15, 2003.

Platinum Jubilee Workshop and Tenth Ramanujan Symposium on Wavelet Analysis, Ramanujan Institute for Advanced Study in Mathematics, University of Madras, March 17-21, 2003.

Participated in the Platinum Jubilee celebrations one day Mathematics Colloquium, Ramanujan Institute for Advanced Study in Mathematics, University of Madras, March 27, 2003.

Eleventh Ramanujan Symposium on Recent Trends in Operator Theory and Banach Algebras, Ramanujan Institute for Advanced Study in Mathematics, University of Madras, March 3-5, 2004.

XII Ramanujan Symposium on Recent Trends in Analysis, Ramanujan Institute for Advanced Study in Mathematics, University of Madras, March 2 - 4, 2005.

Colloquium on Algebra, University of Hyderabad, July 6-8, 2005.

XV Ramanujan Symposium on Dynamic Equations, Ramanujan Institute for Advanced Study in Mathematics, University of Madras, February 4-6, 2008.

Workshop in Noncommutative Geometry, Operator Algebras, Ergodic Theory, The Institute of Mathematical Sciences, Feb. 11-22, 2008.

Participated in the XVI Ramanujan Symposium on Fourier analysis and applications, Ramanujan Institute for Advanced Study in Mathematics, University of Madras, February 25-27, 2009.

One Day Colloquium (Sponsored by Prof. R.Vaidhyanathaswamy Mathematics Trust, Chennai), Ramanujan Institute for Advanced Study in Mathematics, University of Madras, Mar 24, 2009.

Faculty Development Training Programme on Probability and Queuing theory, Anna University, College of Engineering,
Guindy Campus, Nov 29 - Dec 7, 2010.

Faculty Development Training Programme on Theory of Computation, Anna University, MIT Campus, May 8 - 12, 2011.

Symposium on ``Indian Women and Mathematics'', Jan 8 - 10, 2012.

Workshop on Social Networks jointly organised by IMSC, IIT Madras and IMI Chennai, Feb 20 - 24, 2012.

Enriching Collegiate Mathematics, a two day workshop for college lecturers, The Institute of Mathematical Sciences, Chennai, March 13 - 14, 2014.

UGC Sponsored Orientation Programme, Academic Staff College, University of Madras, Batch 117, September 2 - 29, 2014.

Eightieth Annual Meeting of the Indian Academy of Sciences, IIT-Madras, November 7-9, 2014. 

Enriching Collegiate Mathematics, workshop for college and university mathematics teachers, The Institute of Mathematical Sciences, Chennai, March 11 - 13, 2015.

XIX Ramanujan Symposium on Recent Trends in Nonlinear Partial and Fractional Dierential Equations, Ramanujan Institute for Advanced Study in Mathematics, University of Madras, March 02-04, 2016.

Winter School Refresher course in Mathematics - Batch XXXII, Academic Staff College, University of Madras, November 7 - 27, 2017.

XXI Ramanujan Symposium: National Conference on Algebra and its applications, Ramanujan Institute for Advanced Study in Mathematics, University of Madras, February 28 - March 02, 2018.

Teachers Enrichment Workshop on Algebra, Analysis and Topology of p-adic numbers, The Institute of Mathematical Sciences, Chennai, May 21 - 26, 2018.

Teachers Enrichment Workshop, The Institute of Mathematical Sciences, Chennai, November 26 - December 01, 2018.

XXII Ramanujan Symposium: National Conference on pure and applied mathematics, Ramanujan Institute for Advanced Study in Mathematics, University of Madras, March 06 - 08, 2019.

Refresher course in Mathematics - Batch XXXIII, UGC-HRDC, University of Madras, October 10 - 23, 2019.

Talk on "Representations, Characters and Counting colorings under symmetry", Berchmans Webinar Series in Mathematics, St Berchmans College, Changanassery, Kerala, May 28, 2020.

Webinar on "Mathematics - A Key Technology", Kings College of Engineering, Punalkulam, May 29, 2020.

Webinar on "Algebraic Graph Theory", Government Arts College for Men, Nandanam, Chennai, June 1, 2020.

Webinar on "Math and Neural Networks (Techniques and Technologies)", Don Bosco Institute of Technology, Mumbai, June 6, 2020.

Webinar on "Glancing Ramanujan's Mathematics", Sir Theagaraya College, Chennai, June 8, 2020.

Webinar on "Graph Colorings and its Applications", Chevalier T.Thomas Elizabeth College for Women, Chennai, June 9, 2020.

Webinar on "Catalan numbers and its Applications", V.O. Chidambaram College, Thoothukudi, June 10, 2020.

Webinar on "Graphs from Commutative Rings", Presidency College, Chennai, June 10, 2020.

Webinar series on "Exploring Advances in Graph Theory", Loyola College, Chennai, June 15 - 17, 2020.

Webinar on "Enhancement of Mathematical Education using SAGE-MATH", Dr. Ambedkar Government Arts College, Chennai, June 17, 2020.

Two Day National Webinar on "Linear Algebra And Complex Analysis", Ayya Nadar Janaki Ammal College, Sivakasi, June 18 - 19, 2020.

Webinar on "An Invitation to Functional Analysis", Quaid-E-Millath Government college for Women, Chennai, June 24, 2020.

National Webinar on "Algebra and Analysis", R. V. Government Arts College, Chengalpattu, July 3, 2020.

National Webinar on "Graph Theory and its Applications", R. V. Government Arts College, Chengalpattu, July 4, 2020.

National Webinar on "Matlab and its Applications", Aurora's Degree and PG College, Chikkadpally, Hyderabad, July 5, 2020.

Webinar on "Petrinet - A Mathematical Modeling Tool", Women's Christian College, Chennai, July 9, 2020.

National Webinar on "Transforms and their applications to Engineering Science", Kuppam Engineering College, Kuppam, Andhra Pradesh, July 10, 2020.

Two day National Webinar on "Applications of Mathematics in Engineering and Physics", A.G & S.G SIDDHARTHA Degree College of Arts and Science, Vuyyuru, July 10 - 11, 2020.

National Webinar on "Applications of Number Theory in Cryptography", D. G. Vaishnav College, Chennai, July 11, 2020.

National Webinar on "Introduction to Graph Labeling", Sacred Heart College, Tirupattur, July 13, 2020.

Webinar on "Hands On Training E-Certicate Generation With G-Suite", Queen Mary's College, Chennai, July 17, 2020.

National Level Online Webinar on "Spectral Graph Theory: A Brief Introduction", St. Joseph's Institute of Technology, Chennai, July 20, 2020.

National Webinar on "Decimal Expansion, Gauss Conjecture & Borel Conjecture", D. G. Vaishnav College, Chennai, July 25, 2020.

Three Days online Faculty Development Programme (FDP) on "Impact of Covid-19 on Higher Education and Research" organized by RUSA 2.0, Entrepreneurship & Career Hub, University of Madras, July 29 -31, 2020.

Faculty Development Program on "Sagemath", Amal Jyothi College of Engineering, Kanjirapally, Kerala, August 10 - 14, 2020.

National Workshop on "GeoGebra: A Teaching Tool", D. G. Vaishnav College, Chennai, August 12 - 14, 2020.

National Webinar on "Coloring Game of Graphs", D. G. Vaishnav College, Chennai, September 19, 2020.

Virtual Lecture Series on 'Theory and Applications of Special Functions and Fractional Calculus", P. D. Patel Institute of Applied Sciences, Charotar University of Science and Technology, Changa, Gujarat, September 25 -27, 2020.

 ” An invitation to the Rogers - Ramanujan identities”, Berchman’s Webinar Series in Mathematics, St Berchman’s College, Changanassery, Kerala, August 7, 2021.

National webinar on “Real and Complex Analysis”, K.M.G. college of Arts and Science, Gudiyattam, August 25, 2021.

Webinar on “An Introduction to Leavitt Path Algebras”, as a part of Berchmans Webinar Series in Mathematics, St Berchmans College, Changanassery, Kerala, October 09, 2021.

Refresher course in Mathematics and Statistics - Batch XXXV, UGC-HRDC, University of Madras, October 26 - November 08, 2021.

National Level Webinar on Mathematics and Ramanujan, Sarada Vilas College, Mysore, December 27, 2021.

UGC Sponsored Faculty Development Programme on "Aspects of Mathematics", D. G. Vaishnav College, Chennai, March 22 - 28, 2021.

Virtual webinar on "Applications on Graph Theory in Science and Engineering", Reva University, Bengaluru, April 10, 2021.

Prof. V. K. Balachandran Endowment Lecture, Ramanujan Institute for Advanced Study in Mathematics, University of Madras, January 05, 2022.

14th S.S. Pillai Endowment Lecture, Ramanujan Institute for Advanced Study in Mathematics, University of Madras, February 18, 2022.

25th Ramanujan Symposium: National Conference on Nonlinear Fractional Differential Equations, Ramanujan Institute for Advanced Study in Mathematics, University of Madras, March 09 - 11, 2022.

One Day Colloquium (Sponsored by Prof. R.Vaidhyanathaswamy Mathematics Trust, Chennai), Ramanujan Institute for Advanced Study in Mathematics, University of Madras, March 23, 2022.

Prof. R.Vaidhyanathaswamy Endowment Lecture, Ramanujan Institute for Advanced Study in Mathematics, University of Madras, March 29, 2022.

International Conference on commutative algebra and combinatorics and International Workshop on Computational Algebraic Geometry, Harish-Chandra Research Institute, December 8-13, 2003.

RMS/SMF/IMSc Indo-French Conference in Mathematics, The Institute of Mathematical Sciences & Chennai Mathematical Institute, Dec. 15-19, 2008.

RMS/SMF/IMSc Indo-French Conference in Mathematics, The Institute of Mathematical Sciences & Chennai Mathematical Institute, Dec. 15-19, 2008.

nternational Congress of Mathematicians, Hyderabad, India, August 19-27, 2010.

XX Ramanujan Symposium: International Conference on Recent Fourier analysis and wavelets, Ramanujan Institute for Advanced Study in Mathematics, University of Madras, March 21-25, 2017.

International Web-Conference on "Complex Analysis and Differential Geometry: Revisiting", Sidho-Kanho-Birsha University, Purulia, West Bengal, June 29 -30, 2020.

Two Day Online International Faculty Development Programme on "Recent Trends In Graphs And Networks", The Madurai Diraviyam Thayumanavar Hindu College, Tirunelveli, July 30 -31, 2020.

International Webinar on "Special Functions and Discrete Mathematics", University of Kerala, August 02 -05, 2020.

International webinar on "Domination energy in graphs", Dr. Ambedkar Institute of Technology, Bengaluru, September 11, 2020.