The area of approximation algorithms for the Steiner tree problem in graphs has seen continuous progress over the last years. Currently the best approximation algorithm has a performance ratio of 1.550. This is still far away from 1.0074, the largest known lower bound on the achievable performance r
β¦ LIBER β¦
Constructing trees in bipartite graphs
β Scribed by U. Schulte
- Book ID
- 103060897
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 227 KB
- Volume
- 154
- Category
- Article
- ISSN
- 0012-365X
No coin nor oath required. For personal study only.
β¦ Synopsis
In this paper we shall show that if G = (V,E) is a bipartite graph with more than (a -1)j YJ + (b -1)1X1 -(a -l)(b -1) edges, where (X, Y) is a vertex-partition for G and a < b are natural numbers with a < 1x1, b < 1 YI, then G contains every tree T with bipartitenumbers a < b. This result is related to Ramsey-theory for trees.
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