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005 - The latter Let me further clarify Note that G as well...

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Posted on 14 April 2009 09:49 >I want to ask in Q3, We have to prove "3D <=p CNFSAT" or "CNFSAT <=p 3D"? Q3 asks for a polynomial time algorithm to reduce 3D matching to CNFSAT. The other direction can be found in most textbooks, you are welcome to read it. >Also, in Q4, I want to ask span-2 tree means "a node with at most 2 degree in graph" or >"a node with at most 2 degree in tree which means a node have at most 2 children"?
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Unformatted text preview: The latter. Let me further clarify: Note that G as well as any of its spanning tree are undirected graphs. The problem SPAN-2 asks for a spanning tree T such that every node u of T has at most 2 neighbors. Note that a node u in the original graph G might have 2 or more neighbors. Tak...
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