#linear_forest

Linear forest

In graph theory, a branch of mathematics, a linear forest is a kind of forest where each component is a path graph, or a disjoint union of nontrivial paths. Equivalently, it is an acyclic and claw-free graph. An acyclic graph where every vertex has degree 0, 1, or 2 is a linear forest. An undirected graph has Colin de Verdière graph invariant at most 1 if and only if it is a (node-)disjoint union of paths, i.e. it is linear. Any linear forest is a subgraph of the path graph with the same number of vertices.

Wed 14th

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