Kleene closure ⇝

Kleene star

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(Or "Kleene closure", named after Stephen Kleene) The postfix "*" operator used in regular expressions, Extended Backus-Naur Form, and similar formalisms to specify a match for zero or more occurrences of the preceding expression. For example, the regular expression "be*t" would match the string "bt", "bet", "beet", "beeeeet", and so on.

Last updated: 2000-07-26

Nearby terms:

Kleene closureKleene starKleene, Stephen ColeKlerer-May System

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