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只看該作者 · 發(fā)表于 2025-3-28 01:34:50

,Parameterized Results on?Acyclic Matchings with?Implications for?Related Problems,., . asks whether . has an acyclic matching of . (i.e., the number of edges) at least .. In this paper, we first prove that assuming ., there does not exist any .-approximation algorithm for . that approximates it within a constant factor when parameterized by .. Our reduction is general in the sens

只看該作者 · 發(fā)表于 2025-3-28 04:05:56

只看該作者 · 發(fā)表于 2025-3-28 08:38:07

只看該作者 · 發(fā)表于 2025-3-28 13:57:22

,Degreewidth: A New Parameter for?Solving Problems on?Tournaments,lic. The degreewidth of a tournament . denoted by . is the minimum value . for which we can find an ordering . of the vertices of . such that every vertex is incident to at most . backward arcs (. an arc . such that .). Thus, a tournament is acyclic if and only if its degreewidth is zero. Additional

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