In each case, you should provide two strings in L and two strings not in L in the spaces provided.  (All of the strings must be in Σ∗) :

C++ Programming: From Problem Analysis to Program Design
8th Edition
ISBN:9781337102087
Author:D. S. Malik
Publisher:D. S. Malik
Chapter15: Recursion
Section: Chapter Questions
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In each case, you should provide two strings in L and two strings not in L in the spaces provided.  (All of the strings must be in Σ∗) :

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Basis: abb e L.
Recursive step: If u e L, and u ends in abk then uak+1 e L. If u € L, a
in bak then ubk+1 € L.
Closure: Every string in L can be derived by applying the recursive ste
finite number of times.
w e L:
w E L:
w ¢ L:
w ¢ L:
Transcribed Image Text:Basis: abb e L. Recursive step: If u e L, and u ends in abk then uak+1 e L. If u € L, a in bak then ubk+1 € L. Closure: Every string in L can be derived by applying the recursive ste finite number of times. w e L: w E L: w ¢ L: w ¢ L:
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