Question: You need to show a complete proof/ example for each item (e.g. DFA? RE, CFG/ PDA, Turing machine, DEC, P). If a DFA or a
You need to show a complete proof/ example for each item (e.g. DFA? RE, CFG/ PDA, Turing machine, DEC, P). If a DFA or a PDA exists, you still need to exhibit a Turing Machine recognizing the language. If it does not exist, a counterexample is required.
Let
= {a, b, c, d}. Give a DFA/ RE, CFG/ PDA, and a turing machine that decides the language L= {anbnckdk | n, k
0}, if it exists. If any of the three does not exist, prove in detail why it does not exist. Is L
DEC? Is L
P? (Justify your answers).
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