Full Idea
The number π is not only irrational, but it is also (unlike √2) a 'transcendental' number, because it is not the solution of an algebraic equation.
Gist of Idea
π is a 'transcendental' number, because it is not the solution of an equation
Source
James Robert Brown (Philosophy of Mathematics [1999], Ch.10)
Book Reference
Brown,James Robert: 'Philosophy of Mathematics' [Routledge 2002], p.164
A Reaction
So is that a superficial property, or a profound one? Answers on a post card.