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- W2051982334 abstract "Let T be a tree on a set V of nodes. The p-th power T p of T is the graph on V such that any two nodes u and w of V are adjacent in T p if and only if the distance of u and w in T is at most p. Given an n-node m-edge graph G and a positive integer p, the p-th tree root problem asks for a tree T, if any, such that G=T p . Given an n-node m-edge graph G, the tree root problem asks for a positive integer p and a tree T, if any, such that G=T p . Kearney and Corneil gave the best previously known algorithms for both problems. Their algorithm for the former (respectively, latter) problem runs in O(n 3) (respectively, O(n 4)) time. In this paper, we give O(n+m)-time algorithms for both problems." @default.
- W2051982334 created "2016-06-24" @default.
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- W2051982334 date "2013-08-07" @default.
- W2051982334 modified "2023-10-16" @default.
- W2051982334 title "Linear-Time Algorithms for Tree Root Problems" @default.
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- W2051982334 doi "https://doi.org/10.1007/s00453-013-9815-y" @default.
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