Βιρασένα: Διαφορά μεταξύ των αναθεωρήσεων

'''Virasena''' was an [[8th century]] [[Indian mathematics|mathematician]] in [[India]] who gave the derivation of the [[volume]] of a [[frustum]] by a sort of infinite procedure. He also dealt with [[logarithm]]s to [[base 2]] (''ardhaccheda'') and knew its laws, and was also the first to deal with logarithms to [[base 3]] (''trakacheda'') and [[base 4]] (''caturthacheda'').