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Computation Theory - Show that the family of regular languages is closed under tail(L) = {y : xy ∈ L for some x ∈ Σ ∗ }
Garrett McClure
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Theory of Computation
Oct 9, 2017
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The tail of a language is the set of all suffixes of its strings, that is tail(L) = {y : xy ∈ L for some x ∈ Σ ∗ }.
How do I show that the family of regular languages is closed under this operation.
theory-of-computation
regular-language
finite-automata
regular-expression
Garrett McClure
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Suffix(L)=Reverse(prefix(Reveres(L))) //we know reverse and prefix closed under regular Hence suffix(L) also regular
i.e. L={abc} then suffix(L)={^,c,bc,abc}
Avijit Shaw
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Dec 3, 2018
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Avijit Shaw
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