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If grammar G is unambiguous, G’ produced after the removal of Unit production will be:

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in Automata Theory by (51.1k points)
If grammar G is unambiguous, G’ produced after the removal of Unit production will be:

(a) ambiguous

(b) unambiguous

(c) finite

(d) cannot be said

This question was posed to me in an international level competition.

The origin of the question is Eliminating Unit Productions in portion Properties of Context Free Languages of Automata Theory

1 Answer

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Best answer
Right answer is (b) unambiguous

To explain I would say: With the simplification of Context free grammars, undesirable properties are introduced. It says, if grammar G, before simplification is unambiguous, after simplification will also be unambiguous.

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