I'm trying to give regular expressions for the following languages {a, b}
What does w| and w|w mean?
For the first question, I have (b(a+b))*, but I'm lost on the second.
2026-03-27 00:00:20.1774569620
regular expressions, notation w|w and w|?
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Hint for the second question: What are the shortest strings that satisfy the given condition?