<b_jonas> slashlearn kitten//The kittens game is "https://kittensgame.com/", an addictive game that went viral for a short time on #esolangs in 2023-01.

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