Why is brahmadeva considered one of the immortals of mathematics?

Brahmadeva was an Indian mathematician who wrote a commentary on the work of Aryabhata. He lived between 1060 and 1130 AD in the Mathura district of Uttar Pradesh.

            Brahmadeva’s commentary is in nine chapters, and it follows the contents of  the original work of aryabhata, including the longitudes of the planets, problems relating to the daily rotation of the heavens, eclipses of the sun and moon, risings and settings, the lunar crescent, and conjunctions of the planets.

            Brahmadeva’s commentary, dealing partly with trigonometry and its applications to astronomy, was particularly popular in madras, Mysore, and Maharashtra.

            Brahmadeva died at the age of 70, but his reputation as a scientist, mathematician, astronomer, and academician lives on.

TERMS FOR NUMBERS

Bhaskaracharya has given the terms for numbers in multiples of ten. They are eka(1), dasha(10), shata(100), sahasra(1000), ayuta(10,000),  laksha(100,000), prayuta(1,000,000=1 milion) and so on.

 Bhaskaracharya considered a genius

Bhaskaracharya was a genius in mathematics, especially in algebra and geometry. He was born in sahyadri, and headed the astronomical observatory in Ujjain.

            Bhaskaracharaya also known as Bhaskara II(AD 1114-1183), wrote six books on arithematic, algebra, trigonometry, calculus, geometry, and astronomy.  He suggested simple methods to calculate the square, square roots,cube, and cube roots of big numbers.

            The Pythagoras theorem was proved by him in only two lines. Bhaskaracharya wrote about the gravitational force that helps to keep the planets, the sun, and the moon in their respective orbits much before the rest of the world even though about such an explanation. His work on calculus predates newton and Leibniz by over half a millennium. He is particularly known for the discovery of the principles of differential calculus, and its application to astronomical problems and computations. His renowned works are ‘Lilavati’ and ‘Bijaganita’.