Ritabrata Munshi

{{Short description|Indian mathematician (born 1976)}}

{{Use dmy dates|date=September 2021}}

{{Use Indian English|date=May 2018}}

File:RM-at-Oberwolfach.jpg]]

Ritabrata Munshi (born 14 September 1976 in Calcutta (Kolkata), West Bengal) is an Indian mathematician specialising in number theory. He was awarded the Shanti Swarup Bhatnagar Prize for Science and Technology, the highest science award in India, for the year 2015 in mathematical science category.{{cite web|title=Brief Profile of the Awardee|url=http://ssbprize.gov.in/Content/Detail.aspx?AID=511|website=Shanti Swarup Bhatnagar Prize|publisher=CSIR Human Resource Development Group, New Delhi|accessdate=4 November 2015}}

He is known for his contributions to the sub-convexity problem for automorphic L-functions. In a series of papers published in 2015{{Cite journal|last=Munshi|first=Ritabrata|date=2015|title=The circle method and bounds for L-functions—II: Subconvexity for twists of GL(3) L-functions|url=https://muse.jhu.edu/article/582865|journal=American Journal of Mathematics|volume=137|issue=3|pages=791–812|doi=10.1353/ajm.2015.0018|s2cid=14274076|issn=1080-6377|arxiv=1211.5731}}{{Cite journal|last=Munshi|first=Ritabrata|date=October 2015|title=The circle method and bounds for 𝐿-functions—III: 𝑡-aspect subconvexity for 𝐺𝐿(3) 𝐿-functions|url=https://www.ams.org/jams/2015-28-04/S0894-0347-2015-00843-8/|journal=Journal of the American Mathematical Society|language=en|volume=28|issue=4|pages=913–938|doi=10.1090/jams/843|issn=0894-0347|arxiv=1301.1007|s2cid=124909878}}{{Cite journal|last=Munshi|first=Ritabrata|date=2015|title=The circle method and bounds for L-functions - IV: Subconvexity for twists of GL(3) L-functions|jstor=24523345|journal=Annals of Mathematics|volume=182|issue=2|pages=617–672|doi=10.4007/annals.2015.182.2.6|issn=0003-486X}} he introduced a new approach, based on the circle method, and was able to establish sub-convex bounds for genuine degree three L-functions. Later he extended his method to the case of GL(3)xGL(2) Rankin-Selberg convolutions.{{cite arXiv|last=Munshi|first=Ritabrata|date=2018-10-01|title=Subconvexity for $GL(3)\times GL(2)$ $L$-functions in $t$-aspect|class=math.NT|eprint=1810.00539}} These cases were earlier considered beyond the reach of known techniques.

He is affiliated to Tata Institute of Fundamental Research, Mumbai, and the Indian Statistical Institute, Kolkata. Munshi obtained PhD degree from Princeton University in 2006 under the guidance of Andrew John Wiles.{{MathGenealogy|title=Ritabrata Munshi|id=100564}} After that he was a Hill Assistant Professor at the Rutgers University and worked with Henryk Iwaniec. During 2009–2010 he was a member at the Institute for Advanced Study, Princeton.

Munshi was awarded the Swarna-Jayanti fellowship by the Department of Science and Technology, Government of India in 2012. He also received the B.M. Birla Science prize in 2013, and was elected a fellow of the Indian Academy of Sciences in 2016. For his outstanding contributions to analytic aspects of number theory, he was awarded the Infosys Prize 2017 in Mathematical Sciences.{{Cite web|url=http://www.infosys-science-foundation.com/prize/laureates/2017/ritabrata-munshi.asp|title=Infosys Prize – Laureates 2017 – Prof. Ritabrata Munshi|website=infosys-science-foundation.com|language=en|access-date=2017-12-01}} On 8 November 2018 he was awarded the ICTP Ramanujan Prize in a ceremony held at the Budinich Lecture Hall, ICTP.{{Cite web|url=https://www.ictp.it/about-ictp/prizes-awards/the-ramanujan-prize/the-ramanujan-prize-winners/ramanujan-prize-winner-2018.aspx|title=ICTP – Ramanujan Prize Winner 2018|access-date=15 July 2018|archive-date=16 July 2018|archive-url=https://web.archive.org/web/20180716073749/https://www.ictp.it/about-ictp/prizes-awards/the-ramanujan-prize/the-ramanujan-prize-winners/ramanujan-prize-winner-2018.aspx|url-status=dead}} In 2018 he was an invited speaker at the International Congress of Mathematicians (ICM). In both 2018 and 2019, he was named a laureate of the Asian Scientist 100 by the Asian Scientist.{{cite web |url=https://www.asianscientist.com/as100/ |title=The Asian Scientist 100 |author= |date= |website= |publisher= Asian Scientist |access-date= 13 March 2025 |quote= |language= }} He was elected a fellow of the Indian National Science Academy in 2020.

He serves in the editorial board of The Journal of the Ramanujan Mathematical Society and the Hardy-Ramanujan journal.