Śrīdhara

Śrīdhara, Śrīdharācāryya or Śrīdhara Acharya ( c. 870 CE – c. 930 CE) was an Indian mathematician, Sanskrit pundit and philosopher. Sridhara was an Indian mathematician who wrote on practical applications of algebra and was one of the first to give a formula for solving quadratic equations.

Sridhara is the author of two mathematical treatises, namely the Trisatika (Patiganitasara ) and the Patiganita. Bijaganita, Navasati, and Brhatpati are the other works from Sridhara.

The Patiganita is written in verse form. The book begins by providing tables of monetary and metrological units. Based on this algorithms are provided for carrying out the elementary arithmetical operations, squaring, cubing, and square root and cube root with natural numbers.