<oerjan> le/rn rules of wisdom//Unless essential for the entry\'s humor, all wisdom entries should: be understandable without the separate key, be single spaced, and use proper capitalization and punctuation.

|a+b@| = { √(a²-b²) if a²-b² ≥ 0 ; i√(a²-b²) if a²-b² < 0 }