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

Aryabhata is credited with the development of the concept of zero, which revolutionized the field of mathematics and laid the foundation for the modern number system.

Aryabhata is also credited with the invention of the decimal system, which simplified mathematical calculations and paved the way for advancements in various fields.

Brahmagupta is renowned for his work on geometric theorems, including the famous Brahmagupta's theorem, which provides a formula for calculating the area of a cyclic quadrilateral.

Brahmagupta's theorem provides a formula for calculating the area of a cyclic quadrilateral, which is a quadrilateral whose vertices all lie on a circle.

Bhaskara II is known for his work on the concept of infinity, including his exploration of infinite series and the idea of a limit.

Bhaskara II is also known for his work on trigonometry, including his development of trigonometric formulas and his contributions to the study of spherical trigonometry.

Euclid's theorem, also known as the angle sum property of a triangle, states that the sum of the interior angles of a triangle is always 180 degrees.

Brahmagupta is known for his work on the concept of negative numbers, including his development of rules for performing arithmetic operations with negative numbers.

Bhaskara II is known for his work on the concept of irrational numbers, including his development of methods for approximating the value of irrational numbers.

The Pythagorean theorem states that in a right triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides.

Bhaskara II is known for his work on the concept of permutations and combinations, including his development of formulas for calculating the number of ways to arrange objects in different orders.

Bhaskara II is also known for his work on the concept of probability, including his development of methods for calculating the probability of different events occurring.

Brahmagupta's theorem states that the area of a triangle is equal to half the product of its base and height.

Bhaskara II is known for his work on the concept of calculus, including his development of methods for finding the derivatives and integrals of functions.