what does it mean that pi is an irrational number
Proof that π is irrational In the 18th century, Johann Heinrich Lambert proved that the number π (pi) is irrational: that is, it cannot be expressed as a fraction a/b, where a is an integer and b is a non-zero integer. In the 19th century, Charles Hermite found a proof that requires no prerequisite knowledge beyond basic calculus. Three simplifications of Hermite's proof are due to Mary Cartwright, Ivan Niven, and Nicolas Bourbaki. Another proof, which is a simplification of Lambert's proof, is due to Miklós Laczkovich.
Life of Pi Life of Pi is a Canadian fantasy adventure novel by Yann Martel published in 2001. The protagonist is Piscine Molitor "Pi" Patel, an Indian boy from Pondicherry who explores issues of spirituality and practicality from an early age. He survives 227 days after a shipwreck while stranded on a lifeboat in the Pacific Ocean with a Bengal tiger named Richard Parker.