###### Science & Technology

## Srinivasa Ramanujan

- 22 Dec 2020
- 3 min read

### Why in News

Every year, Srinivasa Ramanujan’s birth anniversary on **December 22** is commemorated as** National Mathematics Day.**

### Key Points

**About Srinivasa Ramanujan:****Born**on 22^{nd}December, 1887 in**Erode,Tamil Nadu**and**died**on 26^{th}April 1920 in Kumbakonam,**Tamil Nadu, India.****In 1903**he secured a scholarship to the University of Madras but lost it the following year because he neglected all other subjects in pursuit of mathematics.**In 1911**Ramanujan published the**first of his papers**in the Journal of the**Indian Mathematical Society.****In 1913**he began a correspondence with the British mathematician Godfrey H. Hardy which led to a special scholarship from the**University of Madras and a grant from Trinity College, Cambridge.****In 1918**he was elected to the**Royal Society of London.**- Ramanujan was one of the
**youngest members of Britain's Royal Society**and the**first Indian to be elected a Fellow of Trinity College, Cambridge University.**

**Contributions to Mathematics:**

**Formulas and Equations:**

- Ramanujan compiled around 3,900 results consisting of equations and identities. One of his most treasured findings was his
**infinite series for Pi.** - He gave several formulas to
**calculate the digits of Pi**in many unconventional ways.

- Ramanujan compiled around 3,900 results consisting of equations and identities. One of his most treasured findings was his
**Game Theory:**

- He discovered a long list of new ideas to solve many challenging mathematical problems, which gave a significant impetus to the development of game theory.
- His contribution to game theory is purely based on intuition and natural talent and remains unrivalled to this day.

**Ramanujan’s Book:**

- One of Ramanujan’s notebooks was discovered by George Andrews in 1976 in the library at Trinity College. Later the contents of this notebook were published as a book.

**Ramanujan number:**

**1729**is known as the**Ramanujan number.**- It is the
**smallest number**which can be expressed as the**sum of two different cubes in two different ways.**

- 1729 is the sum of the
**cubes of 10 and 9 -**cube of 10 is 1000 and cube of 9 is 729 adding the two numbers results in 1729. - 1729 is also the sum of the cubes of 12 and 1, cube of 12 is 1728 and cube of 1 is 1 adding the two results in 1729.

- 1729 is the sum of the

**Other Contributions:**Ramanujan’s other notable contributions include**hypergeometric series, the Riemann series, the elliptic integrals, mock theta function, the theory of divergent series, and the functional equations of the zeta function.**