EntityQ995671· pop 7· linked from 5 articlesprefix grammarSign in to saveformal grammarConnectionsSemi-Thue systemEntityregular expressionEntityformal languageEntitystringEntitytheoretical computer scienceEntity𝑛-tupleEntitybinary relationEntityformal grammarEntityregular languageEntityregular grammarEntityrewritingEntitytransitive closureEntitysubstringEntityCategoriesFormal languages