Cycles in weighted graphs
โ Scribed by J. A. Bondy; Genghua Fan
- Book ID
- 105117071
- Publisher
- Springer-Verlag
- Year
- 1991
- Tongue
- English
- Weight
- 602 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0209-9683
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
## Abstract A weighted graph is one in which every edge __e__ is assigned a nonnegative number, called the weight of __e__. The sum of the weights of the edges incident with a vertex ฯ is called the weighted degree of ฯ . The weight of a cycle is defined as the sum of the weights of its edges. In th
Let G be a 2-connected weighted graph and k โฅ 2 an integer. In this note we prove that if the sum of the weighted degrees of every k + 1 pairwise nonadjacent vertices is at least m, then G contains either a cycle of weight at least 2m/(k + 1) or a spanning tree with no more than k leaves.
This paper presents a polynomial-time algorithm for the minimum-weight-cycle problem on graphs that decompose via 3-separations into well-structured graphs. The problem is NP-hard in general. Graphs that decompose via 3-separations into well-structured graphs include Halin, outer-facial, deltawye, w