Mathematical Pin Pi Symbol

Mathematical Pin Pi Symbol made of Rhodium-Plated Steel, Anti-allergic and with a size of 18 mm.

The value of pi has been obtained with various approximations throughout history, being one of the mathematical constants that appears most in physics equations, along with the number e. For this reason, perhaps it is the constant that unleashes the most passion among professional and amateur mathematicians. The relationship between the circumference and its diameter is not constant in non-Euclidean geometries.