A paper published in the History of Mathematics Quarterly argues that the geometric theorems found in the Sulba Sutras (Vedic texts dated 800-500 BCE) demonstrate a functional understanding of what is now known as the Pythagorean theorem centuries before the Greek mathematician lived. The study focuses on the Baudhayana Sulba Sutra's instructions for constructing square fire altars with areas equal to the sum of two other squares.
The researchers highlight that these Vedic texts contain not just the theorem, but also an early approximation of the square root of two, accurate to five decimal places. This reevaluates the role of ancient India as a primary cradle of advanced mathematical thought.