Mathematicians do it ad infinitum. Mathematicians have to prove they did it. Aerodynamicists do it in drag. Algebraic geometers do it for variety. Algebraic geometers do it three-fold.
Algebraists do it by symbolic manipulation.
Algebraists do it in a ring. Algebraists do it in fields. Algebraists do it in groups. Algebraists do it with rings. Analysts do it continuously.