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Tree spanner

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This is an old revision of this page, as edited by Quuxplusone (talk | contribs) at 02:55, 9 May 2007 (mention "k-spanner" term in intro). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

A tree k-spanner (or simply k-spanner) of a graph is a spanning subtree of in which the distance between every pair of vertices is at most times their distance in .