Path: utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!mcgill-vision!bloom-beacon!snorkelwacker!usc!brutus.cs.uiuc.edu!ux1.cso.uiuc.edu!tank!mimsy!cvl!Unknown From: Unknown@cvl.umd.edu (Unknown) Newsgroups: comp.theory Subject: partition into isomorphic subgraphs Message-ID: <4354@cvl.umd.edu> Date: 28 Feb 90 19:04:47 GMT Reply-To: sven@alv.UUCP (Sven Dickinson) Organization: Center for Automation Research, Univ. of Md., College Park, MD 20742 Lines: 17 into Isomorphic Subgraphs." It states that given an instance (G,s) where G and s are graphs, the decision problem as to whether or not the graph G an be covered by one or more instances of graph s (assuming no overlap) is NP-complete. The book goes on to state that the decision problem is also NP-complete for an instance (G) where s is a fixed graph of size >= 3. From: sven@alv (Sven Dickinson) Path: alv!sven My question is: Is the later problem also NP-complete for G and s planar? please send responses to sven@alv.umd.edu Thanks, Sven