𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Some APX-completeness results for cubic graphs

✍ Scribed by Paola Alimonti; Viggo Kann


Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
122 KB
Volume
237
Category
Article
ISSN
0304-3975

No coin nor oath required. For personal study only.

✦ Synopsis


Four fundamental graph problems, Minimum vertex cover, Maximum independent set, Minimum dominating set and Maximum cut, are shown to be APX-complete even for cubic graphs. Therefore, unless P = NP, these problems do not admit any polynomial time approximation scheme on input graphs of degree bounded by three.


πŸ“œ SIMILAR VOLUMES


Completeness results for graph isomorphi
✍ Birgit Jenner; Johannes KΓΆbler; Pierre McKenzie; Jacobo TorΓ‘n πŸ“‚ Article πŸ“… 2003 πŸ› Elsevier Science 🌐 English βš– 239 KB

We prove that the graph isomorphism problem restricted to trees and to colored graphs with color multiplicities 2 and 3 is many-one complete for several complexity classes within NC 2 . In particular we show that tree isomorphism, when trees are encoded as strings, is NC 1 -hard under AC 0 -reductio

Some results on Ξ»-valuation of graphs in
✍ Sze-Chin Shee πŸ“‚ Article πŸ“… 1991 πŸ› Elsevier Science 🌐 English βš– 389 KB

Shee, S.-C., Some results on I-valuation of graphs involving complete bipartite graphs, Discrete Mathematics 87 (1991) 73-80. In this paper we show that a graph G obtained from a complete bipartite graph K,,, and a collection of q (cmax{m, n}) stars G, by joining the centre of G, to every vertex of

Some new results on 1-rotational 2-facto
✍ Tommaso Traetta πŸ“‚ Article πŸ“… 2009 πŸ› John Wiley and Sons 🌐 English βš– 129 KB πŸ‘ 1 views

## Abstract It is known that a necessary condition for the existence of a 1‐rotational 2‐factorization of the complete graph __K__~2__n__+1~ under the action of a group __G__ of order 2__n__ is that the involutions of __G__ are pairwise conjugate. Is this condition also sufficient? The complete ans