Epsilon Closures - Free MCQ Practice Test with solutions, GATE CSE (CSE)

The automaton may be allowed to change its state without reading the input symbol using epsilon but this does not mean that epsilon has become an input symbol. On the contrary, one assumes that the symbol epsilon does not belong to any alphabet.

e-NFA do come up with a convenient feature but nothing new.They do not extend the class of languages that can be represented.

It is more convenient to simulate a machine using e-NFA else the method of Power Construction is used from the union-closure of DFA’s.

The epsilon closure of the set q is the set that contains q, together with all the states which can be reached starting at q by following only epsilon transitions.

The epsilon closure set of f2 consist of the elements:{f2, f3}. Thus the count of the element in the closure set is 2.

 The given are the steps followed while eliminating epsilon transitions from a NFA or converting an e-NFA to just NFA.