V2EX spanning-tree

Spanning-Tree

定义 Definition

spanning-tree(生成树):在图论中,指一个连通图的子图,它包含图中所有顶点,并且边的数量最少、不含回路(环),因此形成一棵“树”。(常见相关概念还有 minimum spanning tree 最小生成树。)

发音 Pronunciation

/spn tri/

例句 Examples

A spanning tree connects all the nodes without forming any cycles.
生成树连接所有节点,但不会形成任何环。

To minimize cabling cost, the engineer computed a spanning tree of the network graph and then refined it into a minimum spanning tree.
为降低布线成本,工程师先计算了该网络图的生成树,再进一步优化为最小生成树。

词源 Etymology

该词由 spanning(“跨越、覆盖全部”)+ tree(“树状结构”)组成。它形象地表达了:用树结构覆盖(包含)图中的所有顶点,同时保持无环与连通,这是图论与网络设计中的核心概念之一。

相关词 Related Words

文学与经典著作 Notable Works

  • Introduction to Algorithms(Cormen, Leiserson, Rivest, Stein):在图算法章节系统讲解生成树与最小生成树。
  • Graph Theory(Bondy & Murty):在图论基础内容中讨论树、连通性与生成树相关定理。
  • Network Flows: Theory, Algorithms, and Applications(Ahuja, Magnanti, Orlin):在网络优化与算法背景下涉及生成树及其应用。
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