It commemorates the birth anniversary of the great mathematician Srinivasa Ramanujan.
He is known as one of the greatest Indian mathematicians of all time, Ramanujan worked on theorems that seemed almost impossible to solve.
He is known for the work he did in the areas of continued fractions, Riemann series, elliptic integrals, hypergeometric series and functional equations of the zeta function.
In 2012, former Prime Minister Manmohan Singh declared this day.
2012 was also termed and celebrated as the National Mathematics Year.