Greibach Normal Form

Greibach Normal Form (GNF) is a way to structure a context-free grammar used in computer science, particularly in language parsing and compiler design. In GNF, every rule of the grammar begins with a single terminal symbol (a basic unit like a letter or digit), followed by zero or more non-terminal symbols (which represent groups of symbols). This standardized form simplifies the process of analyzing and processing languages, making it easier to implement algorithms that recognize whether strings belong to a language defined by the grammar. It helps ensure the grammar is well-structured and suitable for certain types of computational tasks.