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Properties of Context-Free languages

Properties of Context-Free languages. Union. Context-free languages are closed under:. Union. is context free. is context free. is context-free. Example. Language. Grammar. Union. In general:. For context-free languages with context-free grammars and start variables .

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Regular Languages are closed under the regular operations

Regular Languages are closed under the regular operations. Regular Languages. The regular languages are the languages that DFA accept. Since DFA are equivalent with NFA ε , in order to show that L is regular it suffices to construct an NFA ε that recognizes L. Regular Operations.

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