👉 Nefast is a term used in mathematics to describe a class of rings, which are also known as modules. These rings can be seen as generalizations of the ring of integers modulo n, where n is an integer greater than 1. The term "nephast" comes from the Greek words "nefase" (meaning "large") and "stafas" (meaning "a ring"). In this context, a "ring" refers to a mathematical object that behaves like