Bumper sticker - pi theme

Pi is arguably the most important transcendental number known to man. Defined as the ratio of the circumference of a circle to its diameter, this number has fascinated mankind since antiquity and continues to delight mathematicians with intrigue to this day. Over time this number has slowly yielded its secrets. First, it is an irrational number and cannot be represented as the ratio of two integers. Beyond that, it is transcendental and cannot represent the root of any polynomial with rational coefficients. Open questions remain. Celebrate the wonder of mathematics on National Pi Day.