thanks to florida man (meow_wet) for fixing the text transition Underwalter's f is an unsolvable math equation by the man Louis-Pierre Underwalter, that says that anything that f equals, when put into the equation, 1(f) + 1(f), with f being a theoretical, always equalling 7, no matter what number is entered in there. The f constant has an unlimited amount on answers compared to 1+1's single answer, stumping mathematics around the world.