Kleene star
unary operation on sets of strings, used in regular expressions for "zero or more repetitions"
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Kleene star
Summary
Kleene star is an unary operation[1]. It has Wikipedia articles in 22 language editions, a strong signal of global cultural recognition.[2]
Key Facts
- Kleene star's instance of is recorded as unary operation[3].
- Kleene star's instance of is recorded as idempotent function[4].
- Kleene star's instance of is recorded as mathematical concept[5].
- Kleene star's instance of is recorded as set operation[6].
- Stephen Cole Kleene is named after Kleene star[7].
- Kleene star's notation is recorded as asterisk[8].
- Kleene star's facet of is recorded as regular expression[9].
- Kleene star's Stack Exchange tag is recorded as https://stackoverflow.com/tags/kleene-star[10].
- Kleene star's has characteristic is recorded as idempotence[11].
- Kleene star's definition domain is recorded as set[12].
- Kleene star's different from is recorded as Kleene plus[13].
- Kleene star's different from is recorded as wildcard character[14].
- Kleene star's maintained by WikiProject is recorded as WikiProject Mathematics[15].
Body
Definition and Type
Recorded instance of include unary operation[3], idempotent function[4], mathematical concept[5], and set operation[6].
Origins
Stephen Cole Kleene is named after Kleene star[7].
Why It Matters
Kleene star has Wikipedia articles in 22 language editions, a strong signal of global cultural recognition.[2] It is known by 40 alternative names across languages and contexts.[16]