Nilakantha Somayaji was a 16th-century Indian mathematician and astronomer who wrote the Karanakutuhala.

The Karanakutuhala was written in the 16th century.

The Karanakutuhala covers a wide range of mathematical topics, including arithmetic, geometry, algebra, and astronomy.

The Karanakutuhala is considered one of the most important mathematical works in the history of Kerala mathematics.

The chapter in the Karanakutuhala that deals with arithmetic is called Lilavati.

The chapter in the Karanakutuhala that deals with geometry is called Bijaganita.

The chapter in the Karanakutuhala that deals with algebra is called Siddhantasiromani.

The chapter in the Karanakutuhala that deals with astronomy is called Karanakutuhala.

The commentary on the Karanakutuhala written by Govinda Bhatta is called Yuktibhāṣā.

The commentary on the Karanakutuhala written by Nārāyaṇa Pandita is called Vivaraṇa.

The commentary on the Karanakutuhala written by Parameśvara is called Bālaprakāśikā.

The commentary on the Karanakutuhala written by Jyeṣṭhadeva is called Laghubhāskariya.

The theorem in the Karanakutuhala that gives a formula for the area of a triangle is called Nilakantha's formula.

The theorem in the Karanakutuhala that gives a formula for the volume of a sphere is called Bhaskara's formula.

The theorem in the Karanakutuhala that gives a formula for the circumference of a circle is called Brahmagupta's formula.