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1. (30 points). Short Answers. (a) Draw an example of a DFA having just 1 state, over the alphabet {0, 1} that accepts an infinite

1. (30 points). Short Answers.

(a) Draw an example of a DFA having just 1 state, over the alphabet {0, 1} that accepts an infinite number of strings.

(b) Give a definition for regular expression, over an alphabet , including the null string, , and to allow for the emptyset symbol, .

(c) How can you tell if the language for a DFA is empty or not?

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