GNAW
发表于 2025-3-25 04:29:21
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Schlemms-Canal
发表于 2025-3-25 09:50:00
https://doi.org/10.1007/978-3-642-92004-2 nodes, a Steiner tree is a connected, acyclic subgraph that contains all the terminal nodes in .. The goal of . is to find as many element-disjoint Steiner trees as possible. . is known to be .-hard even for |.| = 3 . It is also known that . is .-hard to approximate within a factor of Ω(log|.|)
玛瑙
发表于 2025-3-25 13:43:22
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Nonconformist
发表于 2025-3-25 16:23:10
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嘲弄
发表于 2025-3-25 22:15:30
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爱国者
发表于 2025-3-26 02:09:48
https://doi.org/10.1007/978-3-642-92004-2sitive edge lengths, uniform edge capacity, and positive vertex supplies. Here, each vertex supply corresponds to a set of evacuees. Then, the problem requires to find the optimal location of . sinks in a given path so that each evacuee is sent to one of . sinks. Let . denote a .-sink location. Unde
Commodious
发表于 2025-3-26 05:10:00
Bazillenträger und Dauerausscheiderset of a graph’s vertex set can be extended to a .-colouring of the whole graph. A .-list assignment of a graph is an allocation of a list — a subset of {1,…,.} — to each vertex, and the ... problem asks whether the graph has a .-colouring in which each vertex is coloured with a colour from its list
hemorrhage
发表于 2025-3-26 09:40:47
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不溶解
发表于 2025-3-26 13:36:13
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fibroblast
发表于 2025-3-26 18:17:02
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