Chitrabhanu (IAST: Citrabhānu; fl.
16th century) was a mathematician of the Kerala school and a student of Nilakantha Somayaji.
He was a Nambudiri brahmin from the town of Covvaram near present day Trissur.
[1] He is noted for a karaṇa, a concise astronomical manual, dated to 1530, an algebraic treatise, and a commentary on a poetic text.
[2][3] He gave integer solutions to 21 types of systems of two simultaneous Diophantine equations in two unknowns.
For each case, Chitrabhanu gave an explanation and justification of his rule as well as an example.
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