If they are not used to the notation quite often, they are likely to forget it. I surely learnt all those notations, passed the math exams and don't remember so

If they are not used to the notation quite often, they are likely to forget it. I surely learnt all those notations, passed the math exams and don't remember some of those notations. May be related - Even with 15 years of programming, I tend to forget certain syntaxes while programming - but that doesn't mean I don't know programming