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Theorems · Theorem · computer science

Language.IsContextFree.reverse

∀ {T : Type u_1} {L : Language T}, L.IsContextFree → L.reverse.IsContextFree

The class of context-free languages is closed under reversal.

Defined in
Mathlib.Computability.ContextFreeGrammar
Cited by
2 results in Mathlib
Foundations
Depth 63 from the axioms · uses propext, Classical.choice, Quot.sound
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Language.IsContextFree.of_reverse · cited by 1IsContextFree.of_reverseLanguage.isContextFree_reverse · cited by 0Language.isContextFree_re…Language · cited by 125LanguageContextFreeGrammar · cited by 39ContextFreeGrammarLanguage.reverse · cited by 25Language.reverseContextFreeGrammar.reverse · cited by 19ContextFreeGrammar.reverseContextFreeGrammar.language · cited by 4ContextFreeGrammar.langua…Language.IsContextFree · cited by 3Language.IsContextFreeContextFreeGrammar.language_reverse · cited by 1ContextFreeGrammar.langua…IsContextFree.reverseCITED BYCITES

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