Prof. D. Bhattacharjee

Mathematics Department

Designation: Professor


M.Sc(N.E.H.U), Ph.D(Warsaw University,Poland)

Areas of Interest/Specialization:

Number Theory


  • Teaching:41 years
  • Research:34 years

Awards :

  • Obtained Gold Medal for securing First Class First position in M.Sc, Mathematics, NEHU, Shillong (1978).
  • Obtained Polish Government Scholarship for doing Ph.D at the Institute of Mathematics, Warsaw University, Warsaw, Poland (1984)

Administrative responsibilities undertaken:  

  • Served as Unit Incharge, Unit for Science Education ,NEHU,Shillong,from July 2002 to November 2004.
  • Served as Head ,Centre for Science Education, NEHU, Shillong,from  November 2004 to March 2009.
  • Serving as Head, Department of Mathematics, NEHU, Shillong, since December 2018.

Membership of Professional bodies/societies:

  • Life Member Assam Science Society.
  • Life Member Allahabad Mathematical Society
  • Member, International Program Committee  of  the “2008 International Conference on Theoretical and Mathematical  Foundations of Computer Science  (TMFCS-08 )”
  • Life Member, Indian Science Congress Association .


(i) D.Bhattacharjee, “On Some Characterizations of Arithmetical Functions”, International  Congress of Mathematicians,Seoul,2014,Abstracts ( Short Communications  and Poster Sessions)(P03-05),78-79.

(ii) D.Bhattacharjee, P.K.Saikia 2012, “On Some New Class of Arithmetic Convolutions Involving Arbitrary Sets of Integers”,Romanian Journal of Mathematics and Computer Science,Vol.2(No.2),23-35.

(iii) D.Bhattacharjee 2009,  “On Some New Arithmetic Convolutions in the  Theory of Arithmetical Functions”,Proceedings of the 5th Asian Mathematical Conference,Malaysia 2009, 380-387.

(iv) D.Bhattacharjee ,Bhanu Prasad 2008, “On Some New Arithmetical Convolutions-1”, Proceedings of the 2008 International Conference on  Theoretical and Mathematical Foundations of Computer Science(TMFCS-08),July 7-10 ,2008 , Orlando FL,USA, 88-94.

(v) D.Bhattacharjee 2007, “On Some New Arithmetical Convolutions”,  Proceedings of the 2007 International Conference on High Performance Computing Networking and Communication Systems( HPCNCS-07) July9-12 2007, Orlando,FL,USA,26-30.

(vi) D. Bhattacharjee 2007. “On some new rings of Arithmetical Functions”. Bulletin of  the Calcutta Mathematical Society. Vol.99(No. 2),189-196.

(vii) D. Bhattacharjee 2005. “Multiplicative KB-product and its properties”. Bulletin of the Calcutta Mathematical Society. Vol.97 (No. 2),153-162.

(viii) D. Bhattacharjee 2002. “A Generalized B-product and its properties”. Bulletin of the Allahabad Mathematical Society. Vol.17, 17-21.

(ix) D. Bhattacharjee 1999. On some rings of Arithmetical Functions. Georgian Mathematical Journal. Vol.6 (No. 4),299-306.

(x) D. Bhattacharjee 1998.  Multiplicative B-product and its properties. Georgian Mathematical Journal. Vol.5 (No. 4),315-320.

(xi) D. Bhattacharjee 1997. B-product and its properties. Bulletin of Pure and Applied Sciences. Vol.16E (No. 1),  p.77-83.

Papers presented in Conferences/Seminars:

  1. Presented a paper titled “Some  rings of arithmetic functions” at  the 13th  Conference of the Murshidabad Mathematical Society in Berhampur,Murshidabad,West Bengal during September 21-22 ,2019.
  2. Presented a paper titled “ On Some Generalized Multiplicative and Generalized Additive Arithmetic Functions” in the “International Conference On Recent Advances In  Mathematics And Its Applications (ICRAMA-2019)” at Tripura University,  Agartala during July16-18,2019.
  3. Presented a Poster titled “On Some Characterizations of Arithmetical Functions” at the “International Congress of Mathematicians Seoul 2014”.


  • Had a collaborative research work with Dr. Bhanu Prasad of the Department of Computer and Information Science, Florida A&M University, Tallahassee, FL,USA during 2007-2008 and succeeded in preparing a joint research paper which has been presented at the 2008 International Conference on Theoretical and Mathematical Foundations of Computer Science (TMFCS-08) during July 7-12,2008 in Orlando ,FL, USA(please refer to list of publications no(iv)).
  • Had a collaborative research work with Dr.P.K.Saikia, Department of Mathematics, NEHU ,Shillong ,during 2009-2012 and succeeded in preparing a joint research paper which was published in  Romanian Journal of Mathematics and Computer Science(please refer to list of publications no(ii))