Puthumana Somayaji was a 15th century mathematician

Mathematician

A mathematician is a person whose primary area of study is the field of mathematics. Mathematicians are concerned with quantity, structure, space, and change....

 from Kerala

Kerala

or Keralam is an Indian state located on the Malabar coast of south-west India. It was created on 1 November 1956 by the States Reorganisation Act by combining various Malayalam speaking regions....

, India

India

India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...

. He was born into the Puthumana Illam, and is believed to have been a contemporary of Vatasseri Namboodiri.

His famous works are Karana Padhhathi which is a comprehensive treatise on Astronomy (1430-31 AD), the same year as Vatasseri Namboodiri's Drigganitham; Nyaaya Rathnam, an 8-chapter Ganitha Grantham; Jaathakaadesa Maargam; Smaartha-Praayaschitham; Venvaarohaashtakam; Panchabodham; Grahanaashtakam; and Grahana Ganitham.