The significance of Pi's name is that he chose it for himself. Pi felt a desire to change his name due to the teasing and torment brought on by the phonetic sound of his birth name, Piscine Molitor Patel. The name was intended by his parents to pay homage to Francis Adirubasami, a family friend who was a tremendous swimmer. Adirubasami's favorite place to swim was the Piscine Molitor hotel, which became Pi's namesake. However, many made jokes about this name, calling him "Pissing Patel" as a derogatory nickname.

Pi refers to himself as "Pi" for the majority of the novel. However, the literal translation of his given name does hint at his contentious and significant relationship with water that is yet to come.

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Pi's full name is Piscine Molitor Patel. He was named after a family friend, who loved to swim and whose favorite swimming pool was the Piscine Molitor in Paris. Instead of giving their son their friend's name, Pi's parents named him after the pool! Because he is constantly teased about his name ("Pissing Patel"), he decides to shorten it simply to Pi.

I'm not great at math, but I do know that pi is a mathematical figure that represents the number 3.14. According to Math Forum (linked below), it is an irrational number because it cannot be expressed as a fraction. It is also a constant: "Pi is always the same number, no matter which circle you use to compute it." It is also an ancient number, known to the Egyptians and the Babylonians.

In changing his name, Pi goes from being a joke to being a significant "number"--maybe a little irrational, but constant as well.

**Further Reading**

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