A curly bracket, also known as a brace, is a punctuation mark that looks like this: . It is commonly used in programming languages, mathematics, and various forms of notation. In programming, curly brackets often define blocks of code, helping to group statements together, such as in languages like Java and C++. In mathematics, curly brackets are used to denote sets, which are collections of distinct objects. For example, 1, 2, 3 represents a set containing the numbers 1, 2, and 3. Curly brackets help clarify relationships and organize information in both coding and mathematical contexts.