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Social Studies
Historical biographies

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Brahmagupta was born in 598 AD in Bhinmal, which is a state of Rajhastan, India. He became the head of the astronomical observatory in Uijain, India. This was the center of all mathematicians and mathematics of India at that time. There is no knowledge of Brahmagupta's teachers or education.


Brahmagupta wrote two texts throughout his career as a mathematician, Brāhmasphuṭasiddhānta and the Khaṇḍakhādyaka. In his book, Brāhmasphuṭasiddhānta he explains that a “zero is a number subtracting from itself.” He gave the property that “When zero is added to a number or subtracted from a number, the number remains unchanged; and a number multiplied by zero becomes zero.” In his text he also gave many rules for positive and negative numbers. Many of them are ones we still follow today. These are ‘A positive number multiplied by a positive number is positive.’ ‘A positive number multiplied by a negative number is negative’, ‘A negative number multiplied by a positive number is negative’ and ‘A negative number multiplied by a negative number is positive’. Brahmagupta also had many accomplishments in geometry. He discovered the formula for the area of a cyclic quadrilateral and the length of its sides. He also gave formula for computing sines. Aside from mathematics he was also a very famous astronomer. Most of his astonomy work was also written in these texts.

His Work


Early Years

Later Years

Brahmagupta‘The gem of the circle of mathematicians’."

During Brahmagupta's time was during the imperial expansion of the Roman Empire, allowed his ideas to be influenced by Greek mathematics. He spent his life as a devout Hindu. Brahmagupta died between 660 and 670 AD.

"Brahmagupta." Mathematician Biography, Facts and Pictures. N.p., n.d. Web. 12 July 2014.Allen, James D. "Brahmagupta." Greatest Mathematicians Of All Time. N.p., n.d. Web. 12 July 2014.John, O'Connor J. "Brahmagupta." The MacTutor of Mathematics. University of St. Andrews, Scotland, 1 Nov. 2000. Web. 12 July 2014.


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