U+222A "∪" Union Unicode Character

U+222A "∪" Union is a mathematical symbol that represents the union of two sets, denoting a set containing all elements that appear in either set or both. Originating from set theory and notation developed in the 19th century, it is distinct from the cup product in topology, which uses the same symbol but has a different algebraic meaning. In plain text, the union symbol is essential for precise communication in mathematics, logic, and computer science, such as in expressing expressions like A ∪ B. For clarity in text, it is often displayed with surrounding spaces.