Many people with fibromyalgia continue to work full or part time. But the chronic pain and fatigue associated with fibromyalgia often make working very difficult. If you are employed, it's important to learn about managing fibromyalgia symptoms and coping with pain and fatigue.
Definition of SET THEORY. : a branch of mathematics or of symbolic logic that deals with the nature and relations of sets.
Definition: Set. Before we define the empty set, we need to establish what a set is. A set is a collection of distinct elements or objects. Each element is discernible from the other elements of the set. In other words, we need to be able to distinguish one element from another.