Problem Detail: Productions of the form A-> A are removed immediately, but what if the production is of the form A -> AA? example: A -> AA | a
Asked By : Sebastien
Answered By : Deepu
In you example the production A->AA can not be removed. If that production is removed then the language described by the grammar will change. But in case of a production like A->A, the removal will not affect the language described by the Grammar.
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Question Source : http://cs.stackexchange.com/questions/12746
