Historical note on optimum spanning arborescences
β Scribed by J. D. Murchland
- Publisher
- John Wiley and Sons
- Year
- 1973
- Tongue
- English
- Weight
- 115 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0028-3045
No coin nor oath required. For personal study only.
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In your editorial in the May issue of JASIS, which arrived today, I note with pleasure that you will be featuring a series of historical perspective pieces during this year. It is certainly very important for every field in every profession to take a historical look at itself from time to time so th
The distance between a pair of vertices u, u in a graph G is the length of a shortest path joining u and u. The diameter diam(G) of G is the maximum distance between all pairs of vertices in G. A spanning tree Tof G is diameter preserving if diam(T) = diam(G). In this note, we characterize graphs th
## 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 NPβcomplete. 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