Question
Let A and B be languages. The difference of A and B is the language is A - B = 1x * | x A
Let A and B be languages.
The difference of A and B is the language is
A - B = 1x * | x A and x Bl.
The symmetric difference of A and B is the language,
AB = 1x * | x is in exactly one of A or Bl = (A - B) U (B - A).
(a) If A and B are regular, then A - B is also regular
(b)) If A and B are regular, then AB is also regular.
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Spomenik Monument Database
Authors: Donald Niebyl, FUEL, Damon Murray, Stephen Sorrell
1st Edition
0995745536, 978-0995745537
