The Ramanujan Prize 2026 has gone to Mahesh Kakde, a professor at the Indian Institute of Science (IISc), Bengaluru, for his work in algebraic number theory. He is the fifth Indian to win it. This note covers the prize, Kakde’s work, other mathematics awards and the traps examiners use.
Why in News?
Indian mathematician Mahesh Kakde received the Ramanujan Prize 2026 for Young Mathematicians from Developing Countries. The citation recognises his fundamental work in algebraic number theory, especially Iwasawa theory.
Key Facts for Prelims: Ramanujan Prize 2026
- Winner: Mahesh Kakde, Professor of Mathematics, IISc Bengaluru
- Field: Algebraic number theory, mainly noncommutative Iwasawa theory
- Notable results: Work on the Brumer–Stark and Gross–Stark conjectures, which has implications for Hilbert’s 12th problem
- Earlier honours: Infosys Prize in Mathematical Sciences (2022) and invited speaker at the International Congress of Mathematicians
- Indian winners of this prize: Sujatha Ramdorai (2006), Amalendu Krishna (2015), Ritabrata Munshi (2018), Neena Gupta (2021) and Mahesh Kakde (2026)
What Is Algebraic Number Theory?
Number theory studies whole numbers and their properties, such as primes and divisibility. Algebraic number theory goes further. It looks for hidden structures that explain why numbers behave the way they do.
Iwasawa theory studies how these patterns change when number systems are extended step by step into larger, more complex systems. Kakde’s results helped explain such changes even where the systems do not behave in a simple, predictable way.
About the Ramanujan Prize
- Full name: Ramanujan Prize for Young Mathematicians from Developing Countries
- Awarded by: The International Centre for Theoretical Physics (ICTP), with the International Mathematical Union (IMU) and India’s Department of Science and Technology (DST), which funds it
- Eligibility: Researchers from developing countries who are under 45 years of age
- Started: First awarded in 2005
- Purpose: To recognise outstanding research carried out in a developing country
Static Link: Srinivasa Ramanujan and Maths Institutions
- Srinivasa Ramanujan was born on 22 December 1887 in Erode, Tamil Nadu. He worked on number theory, infinite series, partitions and mock theta functions.
- He was elected a Fellow of the Royal Society (1918) and was a Fellow of Trinity College, Cambridge.
- 1729 is known as the Hardy–Ramanujan number. It is the smallest number that can be written as the sum of two cubes in two different ways.
- National Mathematics Day is observed on 22 December, his birth anniversary. It was declared in 2011, and 2012 was observed as National Mathematical Year.
- ICTP is in Trieste, Italy. It was founded in 1964 by Nobel laureate Abdus Salam and works under UNESCO and the IAEA.
- IMU awards the Fields Medal and the Leelavati Prize (for public outreach in mathematics). The Leelavati Prize was instituted when the International Congress of Mathematicians was held in Hyderabad in 2010.
Major Mathematics Awards Compared
| Award | Given By | Age / Eligibility |
|---|---|---|
| ICTP Ramanujan Prize | ICTP, IMU, DST | Under 45, from developing countries |
| SASTRA Ramanujan Prize | SASTRA University | 32 years or below, any nationality |
| Fields Medal | IMU (every 4 years) | Under 40 |
| Abel Prize | Norwegian Academy of Science and Letters | No age limit |
| Vigyan Yuva–Shanti Swarup Bhatnagar Award | Government of India (Rashtriya Vigyan Puraskar) | Up to 45 years |
Quick Revision Table: Ramanujan Prize 2026
| Parameter | Fact |
|---|---|
| Prize | Ramanujan Prize for Young Mathematicians from Developing Countries |
| Ramanujan Prize 2026 winner | Mahesh Kakde (IISc Bengaluru) |
| Area of work | Algebraic number theory (Iwasawa theory) |
| Awarding bodies | ICTP and IMU, funded by DST |
| Age limit | Under 45 |
| Kakde’s position among Indian winners | Fifth |
| First Indian winner | Sujatha Ramdorai |
| National Mathematics Day | 22 December |
Trap / Confusing Points on Ramanujan Prize 2026
| Common Confusion | Correct Position |
|---|---|
| The ICTP Ramanujan Prize and the SASTRA Ramanujan Prize are the same | No. ICTP’s prize is for mathematicians under 45 from developing countries. SASTRA’s is for those aged 32 or below, of any nationality. |
| The Abel Prize is given by the IMU | No. The Norwegian Academy of Science and Letters gives the Abel Prize. The IMU gives the Fields Medal. |
| Kakde is the first Indian to win the Ramanujan Prize | No. He is the fifth. Sujatha Ramdorai was the first. |
| ICTP is an Indian institution | No. It is in Trieste, Italy. India’s DST only funds the prize. |
| National Mathematics Day is on 28 February | No. 28 February is National Science Day (Raman Effect). Mathematics Day is on 22 December. |
Practice MCQs on Ramanujan Prize 2026
1. The Ramanujan Prize for Young Mathematicians from Developing Countries is awarded by:
a. SASTRA University
b. ICTP with the IMU, funded by DST
c. Indian National Science Academy
d. Royal Society, London
Ans: B
Explanation: ICTP awards it with the International Mathematical Union. India’s Department of Science and Technology funds it.
2. What is the age limit for the ICTP Ramanujan Prize?
a. Under 32
b. Under 40
c. Under 45
d. No age limit
Ans: C
Explanation: It is for researchers under 45 from developing countries. The SASTRA prize limit is 32 and the Fields Medal limit is 40.
3. The Ramanujan Prize 2026 winner Mahesh Kakde works mainly in:
a. Algebraic number theory
b. Topology
c. Fluid dynamics
d. Combinatorics
Ans: A
Explanation: He was recognised for work in algebraic number theory, especially noncommutative Iwasawa theory.
4. Who was the first Indian to win the ICTP Ramanujan Prize?
a. Neena Gupta
b. Sujatha Ramdorai
c. Ritabrata Munshi
d. Amalendu Krishna
Ans: B
Explanation: Sujatha Ramdorai won it in 2006 for work including Iwasawa theory. Kakde is the fifth Indian winner.
5. National Mathematics Day in India is observed on:
a. 28 February
b. 22 December
c. 11 May
d. 14 March
Ans: B
Explanation: 22 December is Ramanujan’s birth anniversary. 28 February is National Science Day and 11 May is National Technology Day.
Exam tip: Award questions usually test the awarding body, the age limit and the “first Indian” fact. Revise the Ramanujan Prize 2026 together with the comparison table above.
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