In Belated Honor of π Day

In Which a Startling Omission is Noticed, and Thence Rectified, in Manner of Honoring a Well Known Transcendent Constant, Who's Derivation By Archimedes Very Nearly Led to The Discovery of One of The Fundamental Bases of Calculus Ages Before Liebniz or Newton Had Even Been a Mere Twinkle in their Great x 10^nth Grandfathers' Eyes

Ah π! While it may not have the invasive prescense of e, the bewitching mystique of ζ(3), or the underappreciated allure of γ; there is still a place in any mathematician's heart for the first transcendental¹ that they meet. Presented for purposes of both Intrigue and Felicity is Ramanujan's well known Formula for π²:

The proof is left as an exercise for the reader.

¹the poetically named transcendental numbers are any element of the Complex Numbers that is not the solution of any polynomial with integer coefficients

²although one is left to wonder why he even bothered writing it down, it is such an obvious equivalence