0598 – Brahmagupta – bio

Born in 0598 in the region of north western India currently known as Rajasthan, Brahmagupta is best known as the first mathematician to establish rules for working with the number “zero” as a quantity instead of a placeholder or a lack of quantity. He made one of the first documented attempts to use the principles of arithmetic with negative numbers, comparing “fortunes” (positive numbers) to “debts” (negative numbers). He designed an algorithm for computing square roots. Brahmagupta was the first to solve the quadratic equation and worked on what is now known as “Pell’s equation”, over a thousand years before Pell. He also made contributions in the field of astronomy and had significant influence on the development of both mathematics and astronomy in the Middle East.

PRECURSOR:
-0800 – Baudhayana
-0575 – Pythagoras
-0325 – Euclid
-0287 – Archimedes
200 – Diophantus
0476 – Aryabhata
0505 – Varahamihira

SUBSEQUENT:
0780 = Al-Khwarizmi
0800 – Mahavira
1114 – Bhaskara II
1130 – Al-Samawal
1170 – Fibonacci
1370 – Paramesvara
1501 – Cardano
1596 – Descartes
1601 – Fermat
1611 – Pell
1736 – Lagrange

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