In this paper the computational complexity of the (bi)simulation problem over restricted graph classes is studied. For trees given as pointer structures or terms the (bi)simulation problem is complete for logarithmic space or NC^1, respectively. This solves an open problem from Balcázar, Gabarró, and Sántha. We also show that the simulation problem is P-complete even for graphs of bounded path-width.
@InProceedings{ganardi_et_al:LIPIcs.CSL.2016.12, author = {Ganardi, Moses and G\"{o}ller, Stefan and Lohrey, Markus}, title = {{On the Parallel Complexity of Bisimulation on Finite Systems}}, booktitle = {25th EACSL Annual Conference on Computer Science Logic (CSL 2016)}, pages = {12:1--12:17}, series = {Leibniz International Proceedings in Informatics (LIPIcs)}, ISBN = {978-3-95977-022-4}, ISSN = {1868-8969}, year = {2016}, volume = {62}, editor = {Talbot, Jean-Marc and Regnier, Laurent}, publisher = {Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik}, address = {Dagstuhl, Germany}, URL = {https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.CSL.2016.12}, URN = {urn:nbn:de:0030-drops-65522}, doi = {10.4230/LIPIcs.CSL.2016.12}, annote = {Keywords: bisimulation, computational complexity, tree width} }
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