The Idempotent Law is a principle in mathematics and computer science that states applying an operation multiple times does not change the result beyond the initial application. For example, in set theory, the union of a set with itself yields the same set: A ∪ A = A. Similarly, in Boolean algebra, the expression A AND A equals A, and A OR A equals A. This law is significant in various fields, including programming and database management, where it ensures that repeated operations do not lead to unintended consequences. Understanding the Idempotent Law helps in designing systems that are robust and predictable, especially in scenarios involving repeated actions or requests.