## Abstract We show that the problem raised by Boesch, Suffel, and Tindell of determining whether or not a graph is spanned by an Eulerian subgraph is NPโcomplete. We also note that there does exist a good algorithm for determining if a graph is spanned by a subgraph having positive even degree at
The spanning subgraphs of eulerian graphs
โ Scribed by F. T. Boesch; C. Suffel; R. Tindell
- Publisher
- John Wiley and Sons
- Year
- 1977
- Tongue
- English
- Weight
- 312 KB
- Volume
- 1
- Category
- Article
- ISSN
- 0364-9024
No coin nor oath required. For personal study only.
โฆ Synopsis
Abstract
It is shown that a connected graph G spans an eulerian graph if and only if G is not spanned by an odd complete bigraph K(2~m~ + 1, 2__n__ + 1). A disconnected graph spans an eulerian graph if and only if it is not the union of the trivial graph with a complete graph of odd order. Exact formulas are obtained for the number of lines which must be added to such graphs in order to get eulerian graphs.
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