Matches in SemOpenAlex for { <https://semopenalex.org/work/W2963569011> ?p ?o ?g. }
Showing items 1 to 93 of
93
with 100 items per page.
- W2963569011 endingPage "21" @default.
- W2963569011 startingPage "1" @default.
- W2963569011 abstract "The S urjective H-C olouring problem is to test if a given graph allows a vertex-surjective homomorphism to a fixed graph H. The complexity of this problem has been well studied for undirected (partially) reflexive graphs. We introduce endo-triviality , the property of a structure that all of its endomorphisms that do not have range of size 1 are automorphisms, as a means to obtain complexity-theoretic classifications of S urjective H-C olouring in the case of reflexive digraphs . Chen (2014) proved, in the setting of constraint satisfaction problems, that S urjective H-C olouring is NP-complete if H has the property that all of its polymorphisms are essentially unary. We give the first concrete application of his result by showing that every endo-trivial reflexive digraph H has this property. We then use the concept of endo-triviality to prove, as our main result, a dichotomy for S urjective H-C olouring when H is a reflexive tournament: if H is transitive, then S urjective H-C olouring is in NL; otherwise, it is NP-complete. By combining this result with some known and new results, we obtain a complexity classification for S urjective H-C olouring when H is a partially reflexive digraph of size at most 3." @default.
- W2963569011 created "2019-07-30" @default.
- W2963569011 creator A5013230954 @default.
- W2963569011 creator A5016192081 @default.
- W2963569011 creator A5027487467 @default.
- W2963569011 date "2018-11-21" @default.
- W2963569011 modified "2023-10-18" @default.
- W2963569011 title "Surjective H-Colouring over Reflexive Digraphs" @default.
- W2963569011 cites W1982336851 @default.
- W2963569011 cites W1996330905 @default.
- W2963569011 cites W1998601876 @default.
- W2963569011 cites W2023673835 @default.
- W2963569011 cites W2026753685 @default.
- W2963569011 cites W2029406200 @default.
- W2963569011 cites W2032487621 @default.
- W2963569011 cites W2033470072 @default.
- W2963569011 cites W2033649868 @default.
- W2963569011 cites W2038274600 @default.
- W2963569011 cites W2048988825 @default.
- W2963569011 cites W2051028069 @default.
- W2963569011 cites W2051731147 @default.
- W2963569011 cites W2056827961 @default.
- W2963569011 cites W2073159267 @default.
- W2963569011 cites W2079906810 @default.
- W2963569011 cites W2132911512 @default.
- W2963569011 cites W2150339067 @default.
- W2963569011 cites W2786954219 @default.
- W2963569011 cites W2962785950 @default.
- W2963569011 cites W2963006808 @default.
- W2963569011 cites W2963569011 @default.
- W2963569011 cites W2963768895 @default.
- W2963569011 cites W3139132595 @default.
- W2963569011 cites W655258421 @default.
- W2963569011 doi "https://doi.org/10.1145/3282431" @default.
- W2963569011 hasPublicationYear "2018" @default.
- W2963569011 type Work @default.
- W2963569011 sameAs 2963569011 @default.
- W2963569011 citedByCount "5" @default.
- W2963569011 countsByYear W29635690112018 @default.
- W2963569011 countsByYear W29635690112020 @default.
- W2963569011 countsByYear W29635690112021 @default.
- W2963569011 countsByYear W29635690112022 @default.
- W2963569011 crossrefType "journal-article" @default.
- W2963569011 hasAuthorship W2963569011A5013230954 @default.
- W2963569011 hasAuthorship W2963569011A5016192081 @default.
- W2963569011 hasAuthorship W2963569011A5027487467 @default.
- W2963569011 hasBestOaLocation W29635690112 @default.
- W2963569011 hasConcept C114614502 @default.
- W2963569011 hasConcept C118615104 @default.
- W2963569011 hasConcept C118712358 @default.
- W2963569011 hasConcept C119238805 @default.
- W2963569011 hasConcept C191399111 @default.
- W2963569011 hasConcept C2779145032 @default.
- W2963569011 hasConcept C33923547 @default.
- W2963569011 hasConcept C4042151 @default.
- W2963569011 hasConcept C78023250 @default.
- W2963569011 hasConceptScore W2963569011C114614502 @default.
- W2963569011 hasConceptScore W2963569011C118615104 @default.
- W2963569011 hasConceptScore W2963569011C118712358 @default.
- W2963569011 hasConceptScore W2963569011C119238805 @default.
- W2963569011 hasConceptScore W2963569011C191399111 @default.
- W2963569011 hasConceptScore W2963569011C2779145032 @default.
- W2963569011 hasConceptScore W2963569011C33923547 @default.
- W2963569011 hasConceptScore W2963569011C4042151 @default.
- W2963569011 hasConceptScore W2963569011C78023250 @default.
- W2963569011 hasFunder F4320319993 @default.
- W2963569011 hasIssue "1" @default.
- W2963569011 hasLocation W29635690111 @default.
- W2963569011 hasLocation W29635690112 @default.
- W2963569011 hasLocation W29635690113 @default.
- W2963569011 hasLocation W29635690114 @default.
- W2963569011 hasLocation W29635690115 @default.
- W2963569011 hasLocation W29635690116 @default.
- W2963569011 hasLocation W29635690117 @default.
- W2963569011 hasOpenAccess W2963569011 @default.
- W2963569011 hasPrimaryLocation W29635690111 @default.
- W2963569011 hasRelatedWork W1201946073 @default.
- W2963569011 hasRelatedWork W1572529423 @default.
- W2963569011 hasRelatedWork W2082250090 @default.
- W2963569011 hasRelatedWork W25342480 @default.
- W2963569011 hasRelatedWork W2757265255 @default.
- W2963569011 hasRelatedWork W2948284727 @default.
- W2963569011 hasRelatedWork W2963569011 @default.
- W2963569011 hasRelatedWork W3037385063 @default.
- W2963569011 hasRelatedWork W4287827487 @default.
- W2963569011 hasRelatedWork W4302422039 @default.
- W2963569011 hasVolume "11" @default.
- W2963569011 isParatext "false" @default.
- W2963569011 isRetracted "false" @default.
- W2963569011 magId "2963569011" @default.
- W2963569011 workType "article" @default.