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In this paper we fix 7 types of undirected graphs: paths, paths with prescribed endvertices, circuits, forests, spanning trees, (not necessarily spanning) trees and cuts. Given an undirected graph G=(V,E) and two “object types” A and B chosen from the alternatives above, we consider the following questions. Packing problem: can we find an object of type A and one of type B in the edge set E of G,...
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