> Writing |x| for abs(x) (abs() is obviously a function, it shouldn't have special notation) And like nearly every piece of mathematics notation, this one is o

> Writing |x| for abs(x) (abs() is obviously a function, it shouldn't have special notation) And like nearly every piece of mathematics notation, this one is overloaded: https://en.wikipedia.org/wiki/Determinant https://en.wikipedia.org/wiki/Determinant