Happy Pi day! 3.14159 (or the number otherwise known as Pi or π) is the ratio of a circle's circumference to its diameter. This irrational number has long intrigued mathematicians and has even found a place in pop culture with its own holiday. Even our friends at ElsevierConnect have written about it today.
Pi appears throughout history. From Antiquity (there’s debate about if the Giza Pyramid builders had knowledge of Pi), to ancient Greek, Chinese, Indian and Persian mathematicians (including
