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Consider the language L defined by the regular expression: (a + b) (ab+ ba) (a + b). (a) Find a regular expression which defines Pref(L),
Consider the language L defined by the regular expression: (a + b) (ab+ ba) (a + b). (a) Find a regular expression which defines Pref(L), the set of all prefixes of strings in L. (b) Find a regular expression which defines the intersection of L with another language, ((aa + bb)")
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Database And Transaction Processing
Authors: Philip M. Lewis, Arthur Bernstein, Michael Kifer
1st Edition
0201708728, 978-0201708721
