Characterizing the strings in a recursively defined set.
the recursive definition given...
Mathematics, 23.10.2019 21:00 Svetakotok
Characterizing the strings in a recursively defined set.
the recursive definition given below defines a set s of strings over the alphabet {a, b}:
base case: λ ∈ s and a ∈ s
recursive rule: if x ∈ s then,
xb ∈ s (rule 1)
xba ∈ s (rule 2)
(a)
use structural induction to prove that if a string x ∈ s, then x does not have two or more consecutive a's.
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