첫 문장 "In mathematics, the notion of cancellativity (or cancellability) is a generalization of the notion of invertibility."
즉 invertibility(인버스,inverse로 만들(invert)수 있음(-ibility)?) 개념의 일반화된 개념.
그럼 cancellativity = cancellability = cancellation property ? CHK
cancellativity cancellability