The document presents two simple proofs of the Pythagorean theorem given by the 15th century Indian mathematician Ganesh Daiwaidnya. It provides biographical details of Ganesh, noting that he was an astronomer and mathematician born in 1507 AD in Maharashtra, India. The document then shows Ganesh's first proof which uses similar triangles and the second proof which uses trigonometric identities. It concludes by mentioning some Pythagorean triplets invented by Ganesh.