Is every unambiguous grammar regular?
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29-09-2020 - |
题
While searching for an answer to this question I found out that there is an unambiguous grammar for every regular language. But is there a regular language for every unambiguous grammar? How can I prove that this is/isn't true?
解决方案
The following grammar is unambiguous yet generates a non-regular language: $$ S \to aSb \mid \epsilon $$
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