P, O, R be regular expression over ∑, P is not ε, then R=Q + RP has a unique solution:
Posted: Thu Jul 14, 2022 9:24 am
a) Q*P
b) QP*
c) Q*P*
d) (P*O*) *
b) QP*
c) Q*P*
d) (P*O*) *
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