Bhaskara II, also known as Bhaskaracharya, was an Indian mathematician and astronomer who lived in the 12th century. He is credited with discovering the Fibonacci sequence, which is a series of numbers where each number is the sum of the two preceding ones.

Bhaskara's Formula, also known as the Sum of Squares Formula, is a mathematical theorem that states that the sum of the squares of the first n natural numbers is equal to n(n+1)(2n+1)/6. It was discovered by the Indian mathematician Bhaskara II in the 12th century.

Bhaskara II is also credited with discovering the binomial theorem, which is a mathematical formula that gives the expansion of (a+b)^n for any positive integer n. The binomial theorem is widely used in mathematics and has applications in various fields, including probability, statistics, and calculus.

Heron's Formula is a mathematical theorem that states that the area of a triangle is equal to half the product of its base and height. It was discovered by the Greek mathematician Heron of Alexandria in the 1st century AD. Heron's Formula is widely used in geometry and has applications in various fields, including surveying, engineering, and architecture.

Brahmagupta was an Indian mathematician and astronomer who lived in the 6th century AD. He is credited with developing a general formula for solving quadratic equations. Brahmagupta's formula is still used today to solve quadratic equations.

The Angle Sum Theorem is a mathematical theorem that states that the sum of the angles of a triangle is equal to 180 degrees. It is one of the most basic and well-known theorems in geometry. The Angle Sum Theorem has applications in various fields, including surveying, engineering, and architecture.

Aryabhata was an Indian mathematician and astronomer who lived in the 5th century AD. He is credited with discovering 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. The Pythagorean theorem is one of the most famous and important theorems in mathematics.

The Area of a Circle Formula is a mathematical theorem that states that the area of a circle is equal to pi times the square of its radius. It was discovered by the Greek mathematician Archimedes in the 3rd century BC. The Area of a Circle Formula is widely used in geometry and has applications in various fields, including surveying, engineering, and architecture.

Srinivasa Ramanujan was an Indian mathematician who lived in the early 20th century. He is considered one of the greatest mathematicians of all time. Ramanujan made significant contributions to the field of calculus, including developing new methods for solving differential equations and discovering new identities for trigonometric functions.

The Derivative Formula is a mathematical theorem that states that the derivative of a function is equal to the slope of its tangent line. It was discovered by the English mathematician Isaac Newton in the 17th century. The Derivative Formula is widely used in calculus and has applications in various fields, including physics, engineering, and economics.

Srinivasa Ramanujan also made significant contributions to the theory of numbers, including discovering new properties of prime numbers and developing new methods for solving Diophantine equations.

The Hardy–Littlewood conjecture is a mathematical theorem that states that every positive integer can be expressed as a sum of three prime numbers. It was proposed by the English mathematicians Godfrey Harold Hardy and John Edensor Littlewood in 1923. The Hardy–Littlewood conjecture is still unproven, but it is one of the most famous and challenging problems in number theory.

Srinivasa Ramanujan also made significant contributions to the Riemann hypothesis, a famous unsolved problem in mathematics that deals with the distribution of prime numbers.

The Riemann hypothesis is a famous unsolved problem in mathematics that deals with the distribution of prime numbers. It was proposed by the German mathematician Bernhard Riemann in 1859. The Riemann hypothesis states that the Riemann zeta function has a zero at every negative even integer. The Riemann hypothesis is one of the most important and challenging problems in mathematics, and its solution would have far-reaching implications in many areas of mathematics.

Srinivasa Ramanujan also made significant contributions to the Goldbach conjecture, a famous unsolved problem in mathematics that deals with the representation of even integers as a sum of two prime numbers.