Difference between revisions of "NFA to DFA"

 
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Latest revision as of 21:02, 28 July 2014

Conversion

  • Q: I know that $2^n$ are the maximum states in DFA for an $n$ state NFA. But what about the minimum no of states in a DFA for an $n$ state NFA?

A: I would say 1 because the $n$ states can be connected through $ε$ moves and hence all of these will be combines to a single start state in DFA.

  • Q: After converting from NFA to DFA and we get $2^n$ states. Now we apply minimization- how many states can we get after this?

A: In the worst case this can remain $2^n$ - that is no minimization can be possible. We can see this in the following example

NFA

NFA

DFA

DFA
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Conversion

  • Q: I know that $2^n$ are the maximum states in DFA for an $n$ state NFA. But what about the minimum no of states in a DFA for an $n$ state NFA?

A: I would say 1 because the $n$ states can be connected through $ε$ moves and hence all of these will be combines to a single start state in DFA.

  • Q: After converting from NFA to DFA and we get $2^n$ states. Now we apply minimization- how many states can we get after this?

A: In the worst case this can remain $2^n$ - that is no minimization can be possible. We can see this in the following example

NFA[edit]

NFA

DFA[edit]

DFA