Substance
发表于 2025-3-30 11:15:05
Karin van Dijk,Hengping Xu,Heriberto Ceruttiies), such that the total flow through any edge does not exceed the capacity. We specify the pairs (.) by a second digraph; for technical reasons we have an edge from . to . when we ask for an .-flow. Formally we have:
cravat
发表于 2025-3-30 12:40:23
https://doi.org/10.1007/978-1-4939-2547-6s the machine to complete one board as fast as possible. We cannot optimize the drilling time but we can try to minimize the time the machine needs to move from one point to another. Usually drilling machines can move in two directions: the table moves horizontally while the drilling arm moves verti
BRACE
发表于 2025-3-30 17:00:58
Bin Yi,Kristina Larter,Yaguang Xiuffice to connect all cities and they should be as cheap as possible. It is natural to model the network by a graph: the vertices are the cities and the edges correspond to the cables. By Theorem 2.4 the minimal connected spanning subgraphs of a given graph are its spanning trees. So we look for a s
Painstaking
发表于 2025-3-30 22:46:15
Natural Materials for Organic Electronicsapter 8 one could introduce edge costs to model that the employees have different salaries; our goal is to meet a deadline when all jobs must be finished at a minimum cost. Of course, there are many more applications.
可能性
发表于 2025-3-31 01:31:28
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确认
发表于 2025-3-31 07:38:22
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GUEER
发表于 2025-3-31 12:03:47
Helmut Sitter,Claudia Draxl,Michael Ramseynd an element of . whose cost is minimum or maximum. In the following we consider modular functions ., i.e. assume that . for all .; equivalently we are given a function .: . → ℝ and write .(.) = Σ..(.).
暗指
发表于 2025-3-31 15:23:42
Ivan I. Fishchuk,Andrey Kadashchukiom (M3). In Section 14.1 we consider greedoids, arising by dropping (M2) instead. Moreover, certain polytopes related to matroids and to submodular functions, called polymatroids, lead to strong generalizations of important theorems; we shall discuss them in Section 14.2. In Sections 14.3 and 14.4
不吉祥的女人
发表于 2025-3-31 17:53:25
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