- International Congress of Mathematician (ICM), Seoul, South Korea, August, 13-21, 2014.
- International Congress of Mathematicians (ICM) Hyderabad, India, 19 – 27, August, 2010.
- International Congress of Mathematicians (ICM), Madrid Spain, 22-30, 2006
- 6th International Congress on Industrial and Applied Mathematics (ICIAM), Zurich, Switzerland, 16-20, July 2007.
- Conference organized by Society of Mathematical Sciences, Delhi, April 27, 2002 and April 29, 2003.
- Conference on Algebraic and Geometric Topology, University of Delhi, 1-4, 2002.
- Seminar organized by Bio-Mathematical study group, University of Delhi, South campus, July17-19, 2002.
- Academic program for the local conference on functional analysis and its application, Department of Mathematics, University of Delhi, Feb.5-7, 2001.
- UGC special assistance program on discrete dynamical system at the Department of Mathematics and Statistics, University of Hyderabad, March 9-11, 2001.
- First International Congress on Industrial and Applied Mathematics, Guru Nanak Dev University, Amritsar, Jan.22-25, 2001.
- Series of Bio-Mathematics lecture, University of Delhi, South campus, Feb.15, 22,19,2001.
- A date with Mathematicians and IMS sponsored lecture 2001 on Information Technology in India today and tomorrow at physics theatre lecture, University of Delhi, April 13-14, 2001.
- Lecture under DRS-SAP of the UGC in the Department of Mathematics, University of Delhi on April 13-14, 2001.
- International conference on the case of Technology of teaching and learning of Mathematics and Bio- Mathematics, University of Delhi, South campus, Dec.15-19, 2001
- Presented a paper entitled on “Motivation To the Young Mathematics Faculty towards Research, National seminar On Pure, Applied and Social Science, June 30-July 1,2018,Lahan
- Presented a paper entitled on “Uniform Version of Wiener Tauberian Theorem for Equicontineous Subsets of Sub Space of L
^{1}(X,µ), International Congress of Mathematician (ICM), Seoul, South Korea, August 13-21, 2014. - Presented a paper entitled on “Importance of Mathematics in B.Sc.CSIT Curricula” in Fifth National Conference of Mathematics in Surkhet, Nepal January 28-30, 2014.
- Delivered a Series of talk entitled on “A study on Fredholm Operator“, Instructional Workshop in Applied Mathematics, Kathmandu University, Nepal, February 20-26,2014.
- A Concept paper presented entitled on “State Structuring through Education”, organized by B.P.Chintan Prathisthan, Nepal, April 13, 2014.
- Presented a paper entitled on “Teaching of Mathematics in Plus Two Level and Undergraduate Level with Action Points to Improve Mathematics Teaching” St. Xavier College Maitighar and General Assembly of Nepal Mathematical Society, 2013
- Presented a paper entitled on “Importance of Mathematics In B.Sc...CSIT Curricula “for B.SC.CSIT Students in Bernhardt College, Nepal, December 7, 2013.
- Presented a paper entitled on “Mathematics Research, issues and its future perspective”, The Third National Conference of Mathematics, S.N. Sc. Campus Mahendranagar, Nepal, and Jan. 20 – 22, 2011.
- Presented a paper entitled on “A study of star algebra on Analysis“, National Conference in Mathematics, Biratnagar, Nepal, 2010.
- Presented a paper entitled on “The Calculus in the Seventeenth Century and at the Start of New Millennium”, Kathmandu University, Nepal, Jan.15-16, 2006.
- Presented a paper entitled on “Uncertainty principle in Harmonic Analysis“, Padma Kanya Campus, TU, Nepal, April 25, 2006.
- Presented a paper entitled on “C [a, b] the foundation stone of Functional Analysis“, Annual Mathematics Day, Central Department of Mathematics, TU, Nepal, Sept. 21-22, 2005.
- Presented a paper entitled on “ Uncertainty principles like Hardy’s theorem for Nilpotent Lie groups “ , Society of Mathematical Sciences, University of Delhi, India, 2003.
- Presented a paper entitled on “Uniform version of the Wiener Tauberian Theorem“ , Society of Mathematical Sciences, University of Delhi, South Campus, India, 2002.
- Presented a paper entitled on “A variant of Newton’s method for solving non-linear equations with fourth-order convergence, International Seminar of Mathematics, P.G Campus, Biratnagar, Dec., 27-28, 2014.
- Participated in Western, Mid-western and Far-western Region Campus Chiefs meeting, organized by Tribhuvan University, Palpa, Nepal, May 7-8, 2014.
- Participated in “The Future of Power“, organized by Brahma Kumari Centre, Kathmandu, Nepal, 7
^{th}March, 2014. - Participated in Instructional workshop on applied Mathematics, Department of Mathematics, Faculty of Mathematics and Computer Science South Asian University, New Delhi, May, 6-10, 2013.
- Attended “Summer School on Algebraic Geometry”, organized by Nepal Academy of Science and Technology ( NAST) on May 28’th to June 15
^{th},2007 - Participated in International workshop on Banach algebra, Operators, and Harmonic analysis, Department of Mathematics, Sardar Patel University, Gujarat, India, Jan. 7-13 2003.
- Participated in 15 days computer training, Conducted by Delhi University Computer centre on Windows 95, Word, and Powerpoint.
- Participated in International instructional Workshop on Wavelets and Application, Department of Mathematics, University of Delhi, August 16-27, 1999.
- Participated in “Parliamentary Procedure Training“, organized by Nepal Jaycees Kanchanpur chapter on May 29-30, 1996.