Open Editions: Happy Pi Day 2023 !

Today is March 14th, 2023 3.14 is Pi, thus today is Pi day !

The number π is a mathematical constant that is the ratio of a circle's circumference to its diameter, approximately equal to 3.14159. The number π appears in many formulas across mathematics and physics. It is an irrational number, meaning that it cannot be expressed exactly as a ratio of two integers, although fractions such as 22/7 are commonly used to approximate it.