Aryabhata is considered the father of Indian mathematics due to his significant contributions to the field, including the development of the decimal system and the concept of zero.

Brahmagupta is known for his work on the Fibonacci sequence, which he described in his book, the Brahmasphuta Siddhanta.

Aryabhata developed the concept of the sine function, which he called the jya.

Bhaskara II is known for his work on the quadratic equation, which he solved using the quadratic formula.

Srinivasa Ramanujan is considered the greatest Indian mathematician of all time due to his remarkable contributions to number theory, analysis, and other branches of mathematics.

Srinivasa Ramanujan is known for his work on modular forms, which he used to solve a variety of problems in number theory.

Brahmagupta developed the concept of the zero matrix, which he used to solve systems of linear equations.

Bhaskara II is known for his work on the binomial theorem, which he used to solve a variety of problems in algebra.

Madhava of Sangamagrama is considered the founder of the Kerala school of mathematics, which made significant contributions to calculus and other branches of mathematics.

Bhaskara II is known for his work on the theory of equations, which he used to solve a variety of problems in algebra.

Madhava of Sangamagrama developed the concept of the differential calculus, which he used to solve a variety of problems in calculus.

Srinivasa Ramanujan is known for his work on the theory of numbers, which he used to solve a variety of problems in number theory.

Srinivasa Ramanujan is considered the greatest Indian mathematician of the 20th century due to his remarkable contributions to number theory, analysis, and other branches of mathematics.

Subrahmanyan Chandrasekhar is known for his work on the theory of relativity, which he used to solve a variety of problems in astrophysics.

Manjul Bhargava is considered the greatest Indian mathematician of the 21st century due to his remarkable contributions to number theory, geometry, and other branches of mathematics.