formal grammars

Formal grammars are systematic rules that define how words and sentences are constructed in a language, whether natural or artificial. They specify the correct combinations of symbols or words, much like grammar rules in English determine proper sentence structure. Used in computer science and linguistics, formal grammars help computers understand, generate, or analyze language by providing a precise framework for what sequences of symbols are valid. In essence, they serve as a blueprint that guarantees consistent, well-formed expressions within a given language system.