A graph G has an S-factor if there exists a spanning subgraph F of G such that for all v in V: deg_F(v) in S. The simplest example of such factor is a 1-factor, which corresponds to a perfect matching in a graph. In this paper we study the computational complexity of finding S-factors in regular graphs. Our techniques combine some classical as well as recent tools from graph theory.
@InProceedings{kolisetty_et_al:LIPIcs.FSTTCS.2019.21, author = {Kolisetty, Sanjana and Le, Linh and Volkovich, Ilya and Yannakakis, Mihalis}, title = {{The Complexity of Finding S-Factors in Regular Graphs}}, booktitle = {39th IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2019)}, pages = {21:1--21:12}, series = {Leibniz International Proceedings in Informatics (LIPIcs)}, ISBN = {978-3-95977-131-3}, ISSN = {1868-8969}, year = {2019}, volume = {150}, editor = {Chattopadhyay, Arkadev and Gastin, Paul}, publisher = {Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik}, address = {Dagstuhl, Germany}, URL = {https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.FSTTCS.2019.21}, URN = {urn:nbn:de:0030-drops-115834}, doi = {10.4230/LIPIcs.FSTTCS.2019.21}, annote = {Keywords: constraint satisfaction problem, Dichotomy theorem, Graph Factors, Regular Graphs} }
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