Graph families | Graph minor theory

Partial k-tree

In graph theory, a partial k-tree is a type of graph, defined either as a subgraph of a k-tree or as a graph with treewidth at most k. Many NP-hard combinatorial problems on graphs are solvable in polynomial time when restricted to the partial k-trees, for bounded values of k. (Wikipedia).

Partial k-tree
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From playlist Math for Liberal Studies

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From playlist K-means Clustering

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