build a pushdown automaton that recognizes the reverse language of a given pushdown automaton?
I think it's similiar to NFAs. I replace the finite states of the given automaton for start-states for my new automaton. I do it with $epsilon$-transition from the start state to the actual finite states of the given automaton. The start state of the given automaton will be my accepting(finite) state of my new one. All transitions will be reversed of course to recognize the reversed word. But how do I have to change the stack of the pushdown automaton? That's tricky.
formal-languages automata context-free-grammar
asked Nov 29 at 13:59
joee
84
add a comment |
I think it's similiar to NFAs. I replace the finite states of the given automaton for start-states for my new automaton. I do it with $epsilon$-transition from the start state to the actual finite states of the given automaton. The start state of the given automaton will be my accepting(finite) state of my new one. All transitions will be reversed of course to recognize the reversed word. But how do I have to change the stack of the pushdown automaton? That's tricky.
formal-languages automata context-free-grammar
asked Nov 29 at 13:59
joee
84
add a comment |
I think it's similiar to NFAs. I replace the finite states of the given automaton for start-states for my new automaton. I do it with $epsilon$-transition from the start state to the actual finite states of the given automaton. The start state of the given automaton will be my accepting(finite) state of my new one. All transitions will be reversed of course to recognize the reversed word. But how do I have to change the stack of the pushdown automaton? That's tricky.
formal-languages automata context-free-grammar
asked Nov 29 at 13:59
joee
84
I think it's similiar to NFAs. I replace the finite states of the given automaton for start-states for my new automaton. I do it with $epsilon$-transition from the start state to the actual finite states of the given automaton. The start state of the given automaton will be my accepting(finite) state of my new one. All transitions will be reversed of course to recognize the reversed word. But how do I have to change the stack of the pushdown automaton? That's tricky.
formal-languages automata context-free-grammar
formal-languages automata context-free-grammar
asked Nov 29 at 13:59
joee
84
asked Nov 29 at 13:59
joee
84
edited Nov 29 at 14:20
asked Nov 29 at 13:59
joee
84
asked Nov 29 at 13:59
joee
84
asked Nov 29 at 13:59
joee
84
84
add a comment |
add a comment |
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