Expository Lectures and Mini-Courses.
Four Lectures: Euclidean and hyperbolic geometries, Teacher's Enrichment Workshop (TEW): Groups and Geometry, St. Xaviers College, Kolkata, June 5--10, 2023.
Lecture: Geometry and imagination, National workshop on Real Analysis, Linear Algebra and its Applications, (IQAC Cell-TIMC), Prabhu Jagadbandhu College, Andul, Howrah, West Bengal, 24th February, 2023.
Two Lectures: Geometric aspects of complex analysis, Faculty Development Workshop on `Analysis and its Applications', January 16--20, 2023, Jammu University, Jammu, India.
Six Lectures at the NCM Instructional School for Lecturers, "Complex analysis from a geometric viewpoint", New Tehri, Uttarakhand, India, June 13--24, 2022.
Lecture: Symmetry with a geometric viewpoint, "Applications of Mathematics" (Workshop for BS-MS students), Bhaskaracharya Pratishthana, May 22, 2022.
An introduction to non-Euclidean geometry, Department of Mathematics, PGDAV College, Delhi, April 22, 2022.
Lecture: The story of the ICM-2010 logo, Capacity building workshop, SGGS College, Chandigarh, April 21, 2022.
General Lecture: Why one does Mathematics, Sarbapratham Charcha Ganit Ki, Dwitiya Satra, 19th December, 2021, organised by The Dissemination of Amazing Knowledge: Vedic and Modern Mathematics, Central University of Himachal Pradesh.
Two Lectures: Groups and Geometry, July 13 -- 16, 2021, Workshop on Emerging Areas in Mathematics (WEAM-2021), One Week Faculty Development Programme, Calcutta Mathematical Society, Kolkata.
An Introduction to non-Euclidean Geometry, Math Clinic, Math4All Initiative, July 9, 2021. (online)
Lecture: The geometry of the ICM-2010 logo, Central University of Sikkim, International Day of Mathematics Celebration, March 15, 2021.
Lecture: The geometry of the ICM-2010 logo, Srinivasa Ramanujan Memorial Lecture Series, Karnataka Science and Technology Academy, December 22--24, 2020.
Six lecture course: Hyperbolic geometry, Kalna College-TIMC Summer School in Mathematics for MS and PhD students (Online workshop), June 12--July 12, 2020.
Webiner at Bangabashi Evening College: Classical geometries and linear algebra, June 8, 2020.
Lecture: Classical geometries and quadratic forms, at the seminar Quadratic Forms and Arithmetic during December 21-22, 2017, MNNIT Allahabad.
Lecture: Measure Preserving Flows on Hyperbolic Surfaces, at the ATM Instructional School for Lecturers on Real Analysis and Measure Theory, Delhi University, April, 2012.
Three hours basic course: Hyperbolic geometry at the ATM School for Lecturers on Geometric Complex Analysis, Delhi University, March, 2011.
Training programs.
NCM Teacher's Enrichment Workshop (TEW): Groups and Geometry, St. Xaviers College, Kolkata, June 5--10, 2023.
NCM Instructional School for Lecturers : Complex analysis from a geometric viewpoint, New Tehri, June 13--25, 2022.
NASI-TIMC Summer School on Differential Geometry, July 5--24, 2021. (online)
TIMC-Kalna College Summer School, June 12--July 12, 2020. (online)
TIMC-Burdwan University: Teacher's Enrichment Program, Burdwan, January 13--19, 2016.
Workshop: Some High Points of Undergraduate Mathematics Education, May 14, 2015, IISER Mohali.
NCM Teacher's Enrichment Workshop: Complex Analysis and Topology, Kalna College, Kalna, West Bengal, December 23--27, 2014.
RMS-NCM Teacher's Enrichment Workshop on Complex Analysis, Vivekananda College, Burdwan, December 27--31, 2013.