About Me

I am a Professor of Mathematics at the Harish-Chandra Research Institute, Allahabad. Below I give a brief introduction to my career. I was born in Thiruvarur (it is the birth place of the carnatic music giants Thyagaraja, Muthuswami Dikshithar and Shyama Sastrigal - In Tamil language they are referred to as "Sangeetha Mummoorthigal"). I did my schooling (upto 6th Std in a school close to my home) from V. S. Boys' High School and after that did my undergraduate degree in Mathematics from A.V.V.M. Sri Pushpam College, Poondi, Thanjavur Dist (1978-81 batch). Our family moved to Chennai in the year 1981 and I did my post-graduation from the Ramakrishna Mission Vivekananda College, Mylapore during the period 1981-83. After my post-graduation, I did my M. Phil degree in Analysis under Professor P. N. Natarajan (Vivekananda College) and then joined the Ph.D programme in Number Theory under the supervision of Professor T.C. Vasudevan at RKM Vivekananda College in 1984. After completing my Ph.D degree in 1989, I joined the Institute of Mathematical Sciences, Chennai as a post-doctoral fellow in October 1990. After the PDF term at IMSc, I joined the Mehta Research Institute (MRI) as an NBHM post-doctoral fellow in November 1992. I joined as a faculty at MRI in April 1993. The name of our Institute is changed to Harish-Chandra Research Institute in the year 2000. Currently I am a Professor of Mathematics at HRI. I was the Dean (Administration) between 2005 to 2009 and Dean (Academic) between 2015 to March 2018. At present, I am also the Treasurer of the National Academy of Sciences, Allahabad.

Research interest

My area of research is in the field of Automorphic forms. More specifically, the theory of modular forms of integral and half-integral weights, higher degree modular forms, Jacobi forms etc.

Selected Publications:

  1. On the theory of newforms of half-integral weight (with M. Manickam and T. C. Vasudevan), J. Number Theory 34 (1990), no. 2, 210–224.
  2. On Saito-Kurokawa descent for congruence subgroups (with M. Manickam and T. C. Vasudevan), Manuscripta Math. 81 (1993), no. 1-2, 161–182.
  3. Modular forms which behave like theta series (with A. K. Lal and K. Chakraborty), Math. Comp. 66 (1997), no. 219, 1169–1183.
  4. On Shimura, Shintani and Eichler-Zagier correspondences (with M. Manickam), Amer. Math. Soc. 352 (2000), no. 6, 2601–2617.
  5. On the lacunarity of two-eta-products (with S. Cooper and S. Gun), Georgian Math. J. 13 (2006), no. 4, 659–673.
  6. A canonical subspace of modular forms of half-integral weight (with S. Gun and M. Manickam), Math. Ann. 347 (2010), no. 4, 899–916.
  7. on Shintani correspondence (with M. Manickam and T. C. Vasudevan), Proc. Indian Acad. Sci. Math. Sci. 99 (1989), no. 3, 235–247.
  8. An Eichler-Zagier map for Jacobi forms of half-integral weight (with M. Manickam), Pacific J. Math. 227 (2006), no. 1, 143–150.
  9. Theory of newforms of half-integral weight (with M. Manickam and J. Meher), Pacific J. Math. 274 (2015), no. 1, 125–139.
  10. Jacobi forms and differential operators (with S. Das), J. Number Theory 149 (2015), 351–367.

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Contact Info

Postal Address

B Ramakrishnan
Harish Chandra Research Institute
Chhatnag Road
Prayagraj (Allahabad) 211019
Uttar Pradesh

Phone Numbers

Office: (+91) 0532-2274319

Home: (+91) 0532-2274019

cellular (+91) 8778692645

Cellular (+91) 9935422987



Personal Email


Links to my acadamic works can be found at the following places!


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Research Gate

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