Aryabhata is widely regarded as 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 made significant contributions to trigonometry, including the development of formulas for sine, cosine, and tangent.

The Pythagorean Theorem, which states that in a right triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides, was first discovered by ancient Indian mathematicians.

Bhaskara II developed a method for solving quadratic equations, which is known as the chakravala method.

The Sulba Sutras are a collection of ancient Indian texts that contain mathematical knowledge from various fields, including geometry, algebra, and astronomy.

Varahamihira made significant contributions to astronomy and astrology, including the development of a system for predicting eclipses.

The Hindu Calendar is an ancient Indian calendar that is still used in some parts of India today. It is based on the lunar cycle and the solar year.

Brahmagupta developed a method for calculating the area of a triangle, which is known as Brahmagupta's formula.

Bhaskara II developed a method for solving cubic equations, which is known as the Bhaskara's method.

Aryabhata developed a method for calculating the volume of a sphere, which is known as Aryabhata's formula.

Aryabhata developed a method for calculating the circumference of a circle, which is known as Aryabhata's formula.

Aryabhata developed a method for calculating the area of a circle, which is known as Aryabhata's formula.

Brahmagupta developed a method for calculating the volume of a cylinder, which is known as Brahmagupta's formula.

Brahmagupta developed a method for calculating the volume of a cone, which is known as Brahmagupta's formula.

Brahmagupta developed a method for calculating the volume of a pyramid, which is known as Brahmagupta's formula.