Pi
Generated from the engine's own definition: compute-engine's symbol, which we neither extend nor document by hand. No examples yet — the crosswalk is the reason it has a page.
The constant π ≈ 3.14159, the ratio of a circle's circumference to its diameter.
Wikipedia
PiMathWorldPiWikidataQ167Encyclopedia of MathematicsPi(number)nLabpiBritannicatopic/pi-mathematicsFungrimPiOEISA000796Wolfram LanguagePiPi: real<3.141592653589793..3.141592653589794>a constant, as compute-engine declares it