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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In the theory of formal languages, the pumping lemma for regular languages describes an essential property of all regular languages. Informally, it says that all sufficiently long words in a regular language may be pumped - that is, have a middle section of the word repeated an arbitrary number of times - to produce a new word which also lies within the same language. The pumping lemma was first articulated by Y. Bar-Hillel, Micha A. Perles, Eli Shamir in 1961. It is…mehr

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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In the theory of formal languages, the pumping lemma for regular languages describes an essential property of all regular languages. Informally, it says that all sufficiently long words in a regular language may be pumped - that is, have a middle section of the word repeated an arbitrary number of times - to produce a new word which also lies within the same language. The pumping lemma was first articulated by Y. Bar-Hillel, Micha A. Perles, Eli Shamir in 1961. It is useful for disproving the regularity of a specific language in question. It is one of a few pumping lemmas, each with a similar purpose.