1. President of Indian Mathematical Society, 2001-2002.

2. President,Section of Mahematical Sciences, Indian Science Congress (2005).

3. President, Bharat Ganit Parished,2005-2006.

4. Vice-President of Gwalior Academy of Mathematical Sciences (2009).

5. General Secretary of “Society for Special Functions and Their Applications”, 1998-2001 and 2001-2011.

6. Visiting Professor- Dept. of Pure Mathematics, University of Calcutta, Kolkata, A.P.S.University,Rewa.(M.P), University of Burdwan, Burdwan,W.B.,India and Central university, Kaisargod,Kerala.

7. Honored by Distinguished Service award by Vijnana Parishad of India (Society for applications of Mathematics) at DAV,PG College, University of Kanpur on November 4, 2011

8. Honored by Distinguished Service award at T.D.,PG College, Purvanchal University ,Jaunpur, in December, 2011

9. Honored by Distinguished Academician Award from FETER Academy, India in 2017.

10. An International Conference in Algebra and applied Analysis (IAAA-2018) was organized in his honor by Integral university, Lucknow, India during 9-11,August,2018.

11. Editor of Proceedings of Society for Special Functions and Their Applications (2001-2010), Aligarh Bulletin of Mathematics and several other Indian and foreign journals.

12. Member of Editorial Board of more than 20 national and International Journals and Referee of more than 50 Journals.

13. Member of Syllabi Revision Committee of Union Public Service Commission (U.P.S.C), State Public Service Commission U.P., and National Council of Education and Research Training (NCERT).

14. Member of Text Books Writing Team for XI and XII of N.C.E.R.T.

15. Supervised 13 Ph.D's and 11 M.Phil. candidates.

16. Participted in two TELE-FILMS sponsored by University Grants Commission on Undergraduate courses in Mathematics. Delivered 9 lectures on Calculus and 10 lectures on Mechanics during 1989-1991. A series of lectures have been telecast by Doordershan on National Network.

17. Coordinator of four Orientation Programmes and 10 Referesher Courses for College and University Teachers conducted by Academic Staff College, A. M. U. Aligarh in the years 1988-2002.

18. Coordinator of two Refresher Courses and one Conference in Mathematics organised by Centre for Promotion of Science, A. M. U. Aligarh in the years 1987 and 1988.

19. Convener/Coordinator of several National and International Conferences on Mathematics at Dept. of Mathematics, A. M. U. Aligarh.

20. Principal Investigator of a research scheme of C.S.I.R. on `Lie Theory and Special Functions' sanctioned in 1987 and a research project by Department of Science and Technology, Government of India in 2013,

21. Published several articles on Popular Science and History of Mathematics in English and Hindi.

22. Member of Indian Mathematical Society, Indian Science Congress, Canadian Society for the History and Philosophy of Mathematics, Canada, Society for Scientific Values, Indian Society for Mathematics and Mathematical Sciences, Indian Society for History of Mathematics, Rajasthan Ganit Parishad, Gwalior Academy of Sciences and Bharat Ganit Parished.

23. Name listed in “World Directory of Mathematicians”, 1982., International Mathematical Union , Asian/American Who'sWho, Vol 2, 2002 and ”Who’sWho in Science and Engineering, Marquis Who’sWho in Science and Engineering, Providence, NJ USA 2008-2009..

24. Elected Member of Court, AMU, 1995-1997.

25. Reviewer of Mathematical Reviews by American Mathematical Society.

26. Member of Board of Studies, Research Degree Committee and Faculty of Science of several Indian Universities.

27. Member of Academic Board of Al-Ghurair University, Dubai, UAE.,(1999-2002)

28. Delivered a talk at International Centre for Theoretical Physics (I.C.T.P.), Trieste, Italy in the College “On representation theory of Lie groups” (Nov. 4-Dec.5, 1985).

29. Invited to contribute an article on “Lilawati” to an “Encyclopedia of the History of Science, Technology and Medicine in Non-Western Cultures” in 1995 by Garland Publishing Inc. New York, U.S.A.

30. Invited to attend and to deliver a talk in the XIIth International Congress of Mathematical Physics at Brisbane, Australia, July 13-19 (1997); for a research visit at University of Kaiserlautern, Germany in 2001; to deliver talks at XXVIth Ohio State Denison Mathematics Conference (May 17-19, 2002) at Columbus, U.S.A. and at a Conference on Representation theories, Topology and Mathematical Physics (July 8-12, 2002) at Potsdam, Newyork, U.S.A.

31. Delivered an invited talk and chaired a session at the 4th Congress of the International Society of Analysis, Application and Computation (ISAAC) held at York University, Toronto, Canada, (August 11-16, 2003).

32. Collaborated on a research project on “Lie Theory and Special Functions” at the University of Western Ontario, London, Ontario, Canada, (August 8-27, 2003).

33. Delivered invited talks at International conference on Mathematics and its applications, Kuwait foundation for the advancement of science, State of Kuwait, April 5-7,2004 and International conference on Mathematics, Yarmouk University, Irbid, Jordan, 21-24 April,2004.

34. Delivered 13th Srinivasa Ramanujan Memorial Award Lecture at the 67th Annual Conference of the Indian Mathematical Society (2003).

35. Delivered Presidential address in Section of Mathematics at 92nd Indian Science Congress, Ahmadabad, Jan.3-7,2005.

36. Chief guest at First International Conference on Mathematical Sciences, Zarqa Private University, Zarqa, Jordan, April 20-22,2006.

37. Received Fellowship Award by V.P.I.(Society for Applications of Mathematics) at 21st Annual Conference of

VPI held at SRMIST,Delhi-NCR Campus,Modinagar, on April 26-28,2019