👉 Set theory is a fundamental branch of mathematics that deals with collections of objects, known as sets. These collections can contain any type of elements, including numbers, letters, other sets, or even abstract concepts. Sets are defined by their elements, which can be explicitly listed or implicitly understood through a description. Key operations in set theory include union (combining elements from two sets), intersection (finding common elements between sets), and difference (elements in one set but not the other). Set theory also introduces important concepts like subsets (sets where all elements are in the larger set), power sets (the set of all subsets of a given set), and cardinality (the number of elements in a set). These concepts form the basis for more advanced mathematical structures and are crucial in various fields, including logic, probability, and computer science.
