sutras

Shulba sutras were instruction manuals for constructing vedic altars of various shapes and sizes for performing yagnas. there are seven shulba sutras. which is the oldest shulba sutra?

The Shulba Sutras have preserved only that part of Vedic mathematics which was used for constructing the altars and for computing the calendar to regulate the performance of religious rituals. After the Shulba Sutra period, the main developments in Vedic mathematics arose from needs in the field of astronomy.