How regular languages are closed under prefix operation?
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Prefix-free regular languages are closed under union and concatenation operation. Prefix-free regular languages are not closed under complementation, intersection, Kleene closure and reversal operations. In future work can be carried out on closure properties of suffix-free and infix-free regular languages.
A regular language satisfies the following equivalent properties: it is the language of a regular expression (by the above definition) ... it is the language accepted by a deterministic finite automaton (DFA) it can be generated by a regular grammar. it is the language accepted by an alternating finite automaton.
A regular language satisfies the following equivalent properties: it is the language of a regular expression (by the above definition) ... it is the language accepted by a deterministic finite automaton (DFA) it can be generated by a regular grammar. it is the language accepted by an alternating finite automaton.
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