Supereulerian graphs, independent sets, and degree-sum conditions

Document Type

Article

Publication Date

January 1998

Publication Title

Discrete Mathematics

First Page

73

Last Page

87

DOI

https://doi.org/10.1016/S0012-365X(97)00028-9

Abstract

A graph is supereulerian if it contains a spanning closed trail. A graph G is collapsible if for every even subset R ⊆ V(G), there is a spanning connected subgraph of G whose set of odd degree vertices is R. The graph K1 is regarded as a trivial collapsible graph. A graph is reduced if it contains no nontrivial collapsible subgraphs. In this paper, we study the independence numbers of reduced graphs. As an application, we also obtain new degree-sum conditions for supereulerian graphs and collapsible graphs.

Notes

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