Having a little trouble wrapping my head around this one.
What is a regular expression equivalent to the following automaton?
Having a little trouble wrapping my head around this one.
What is a regular expression equivalent to the following automaton?
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Hint. First consider the automaton obtained by replacing the two transitions labelled by $\{a,b\}$ by transitions labelled by $c$:
Find a regular expression for this new automaton and then replace $c$ by $\{a,b\}$ in the result.