# Who came up with pi

The concept of pi has been around for thousands of years, but its exact origin is still a subject of debate. The ancient Egyptians and Babylonians were among the first civilizations to realize that there was a constant ratio between the circumference and diameter of a circle. However, it was the Greek mathematician Archimedes who made significant contributions to the understanding of pi.

Archimedes lived in the 3rd century BC and is credited with calculating an approximation of pi. He used a method called the “method of exhaustion” to determine that pi was between 3 1/7 and 3 10/71. This was a groundbreaking achievement at the time and helped lay the foundation for future advancements in mathematics.

Another notable figure in the history of pi is the Indian mathematician Madhava. He lived in the 14th century and is known for his work on infinite series. Madhava developed a series that converges to pi, known as the Gregory-Leibniz series. This series allowed for more accurate approximations of pi to be calculated.

In modern times, the value of pi has been calculated to billions of decimal places using advanced computer algorithms. However, despite these advancements, the exact nature of pi remains a mystery. It is an irrational number, meaning it cannot be expressed as a simple fraction or decimal. Its decimal representation goes on forever without repeating, making it a fascinating and endlessly intriguing mathematical concept.

In conclusion, while the ancient Egyptians and Babylonians were among the first to discover the concept of pi, it was Archimedes who made significant contributions to its understanding. Since then, mathematicians like Madhava have further refined our knowledge of pi through their groundbreaking work on infinite series. Despite our modern technological advancements, pi remains an enigmatic and infinitely fascinating mathematical constant.