EntityQ6664444· pop 5· linked from 6 articleslocal languageSign in to savein mathematics, some kind of formal languageConnectionsregular languageEntitydeterministic finite automataEntityInternational Standard Book NumberEntitydigital object identifierEntityInternational Standard Serial NumberEntityTuring machineEntitysubsetEntityregular expressionEntityformal languageEntityCambridge University PressEntityfinite-state machineEntityautomata theoryEntitySeymour PapertEntityChomsky hierarchyEntityformal grammarEntitycontext-free grammarEntitypushdown automatonEntityKleene starEntityPEntityabstract machineEntityCategoriesCombinatorics on wordsFormal languagesSemigroup theory