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 of theory. plural. theories. 1 : the analysis of a set of facts in their relation to one another. 2 : abstract thought : speculation. 3 : the general or abstract principles of a body of fact, a science, or an art music theory.