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Star height

In theoretical computer science, more precisely in the theory of formal languages, the star height is a measure for the structural complexity of regular expressions and regular languages. The star height of a regular expression equals the maximum nesting depth of stars appearing in that expression. The star height of a regular language is the least star…

Science, Eggan's theorem & Generalized star height

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Eggan's theorem

Sakarovitch (2009)Directed graphGraph theoryAutomata theoryCycle rank
14 related topics

Generalized star height

Set unionKleene starSet complementOpen problemGeneralized star-height problem
8 related topics

Formal definition

AlphabetEmpty word
2 related topics

Examples

Group language
1 related topics

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Formal definition

Examples

Eggan's theorem

Generalized star height

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Map overview Semantic statistics

Star height

Nodes35
Edges34
Triples63
Avg. degree1.94
Density0.057143
Components1

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Star height

Top relations

related to References · 46
Star height → Arto, Berstel, BF01702866, Brzozowski, Cambridge, Cambridge University Press, Christophe, Computer, Computer Science Press, Computing Systems, Control, Elements, Encyclopedia, French, General, Information, ISBN, ISSN, Its Applications, Jacques
related to Eggan's theorem · 5
Star height → Eggan, Eggan's, In, Sakarovitch, We
related to Generalized star height · 5
Star height → Generalized, If, It, Kleene, The
related to Examples · 3
Star height → For, However, While
related to Formal definition · 2
Star height → EF, More
is a · 1
Star height → measure for the structural complexity of regular expressions and regular languages
see also · 1
Star height → Star

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Important terminology

star height regular language set expression generalized expressions words theory defined zbl languages alphabet doi finite one eggan 1963 theorem

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Star heightis ameasure for the structural complexity of regular expressions and regular languages0.90text
Star heightrelated to Eggan's theoremIn0.60section
Star heightrelated to Eggan's theoremEggan0.60section
Star heightrelated to Eggan's theoremEggan's0.60section
Star heightrelated to Eggan's theoremSakarovitch0.60section
Star heightrelated to Eggan's theoremWe0.60section
Star heightrelated to ExamplesWhile0.60section
Star heightrelated to ExamplesFor0.60section
Star heightrelated to ExamplesHowever0.60section
Star heightrelated to Formal definitionMore0.60section
Star heightrelated to Formal definitionEF0.60section
Star heightrelated to Generalized star heightThe0.60section

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