nfa - Closed operations of regular languages -



nfa - Closed operations of regular languages -

let x language on alphabet,

insert(x) set of strings obtained adding 1 more character 1 of strings in x.

insert(x) = { azb : a,b ∈ ∑* , ab ∈ l , z ∈ ∑. }

why set of regular languages closed under insert operation?

nfa

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