Aryabhata is widely regarded as the "Father of Indian Mathematics" due to his significant contributions to various fields of mathematics, including arithmetic, algebra, trigonometry, and astronomy.

Aryabhata is credited with developing the concept of the zero and the decimal system, which revolutionized the field of mathematics and made calculations much easier.

Bhaskara II wrote the treatise "Lilavati", which is considered one of the most comprehensive works on mathematics in ancient India. It covered a wide range of topics, including arithmetic, algebra, geometry, and astronomy.

Brahmagupta is renowned for his work on indeterminate equations and Diophantine analysis. He developed several methods for solving Diophantine equations, which are equations with integer solutions.

Srinivasa Ramanujan is widely regarded as one of the greatest mathematicians of the 20th century. He made significant contributions to number theory, analysis, and mathematical physics, despite having little formal education.

Fibonacci, also known as Leonardo of Pisa, was an Italian mathematician who developed the concept of the Fibonacci sequence and made significant contributions to combinatorics and number theory. While he was not from India, his work had a profound influence on Indian mathematics.

Bhaskara II is renowned for his work on the theory of equations. He developed methods for solving cubic and quartic equations, which were significant advancements in mathematics at that time.

Aryabhata developed a model of the solar system that was more accurate than the Ptolemaic model, which was the prevailing model at that time. His model included the concept of the Earth's rotation on its axis and the revolution of planets around the Sun.

Brahmagupta is known for his work on indeterminate equations and developed the Brahmagupta-Bhaskara identity, which is a formula for finding integer solutions to certain types of Diophantine equations.

Aryabhata developed the sine and cosine functions, which are fundamental in trigonometry. He also developed a table of sines, which was essential for astronomical calculations.

Euclid, a Greek mathematician, is known for his work on number theory and geometry. He developed the concept of perfect numbers, which are positive integers that are equal to the sum of their proper divisors.

Brahmagupta developed the concept of the quadratic equation and provided a general formula for solving it. He also developed methods for solving linear equations and systems of linear equations.

Diophantus, a Greek mathematician, is known for his work on Diophantine analysis, which involves finding integer solutions to algebraic equations. He developed methods for solving various types of Diophantine equations.

Johannes Kepler, a German mathematician and astronomer, developed a model of the solar system that included the concept of elliptical orbits. This model was a significant improvement over previous models and laid the foundation for modern astronomy.

Henri Poincaré, a French mathematician, developed the concept of modular forms, which are functions that satisfy certain symmetry properties. His work on modular forms had a profound impact on number theory and other areas of mathematics.