The complexity of surjective homomorphism problems - a survey
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Official URL: http://dx.doi.org/10.1016/j.dam.2012.03.029
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We survey known results about the complexity of surjective homomorphism problems, studied in the context of related problems in the literature such as list homomorphism, retraction and compaction. In comparison with these problems, surjective homomorphism problems seem to be harder to classify and we examine especially three concrete problems that have arisen from the literature, two of whose complexity remains open.
|Keywords (uncontrolled):||surjective homomorphisms; computational complexity; constraint satisfaction|
|Research Areas:||Middlesex University Schools and Centres > School of Science and Technology > Computer and Communications Engineering|
|Deposited On:||13 Dec 2012 07:00|
|Last Modified:||06 Feb 2013 11:40|
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