In this paper we investigate structural properties of a certain class of graphs (%&free graphs) which are relevant in the study of kernel theory, m-free graphs satisfy the strong perfect graph conjecture of Berge. We investigate orientations of Z&free graphs and other classes of graphs which produce
β¦ LIBER β¦
Kernels in some orientations of comparability graphs
β Scribed by Christophe Champetier
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 170 KB
- Volume
- 47
- Category
- Article
- ISSN
- 0095-8956
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
Orientations of graphs in kernel theory
β
H. Galeana-SΓ‘nchez; V. Neumann-Lara
π
Article
π
1991
π
Elsevier Science
π
English
β 589 KB
On kernel-perfect orientations of line g
β
O.V. Borodin; A.V. Kostochka; D.R. Woodall
π
Article
π
1998
π
Elsevier Science
π
English
β 246 KB
Distances in orientations of graphs
β
V ChvΓ‘tal; C Thomassen
π
Article
π
1978
π
Elsevier Science
π
English
β 815 KB
B1- and B2-orientable graphs in kernel t
β
H. Galeana-SΓ‘nchez
π
Article
π
1995
π
Elsevier Science
π
English
β 366 KB
In this note I prove that B, or B,-oriented digraphs satisfy the following conjecture proposed by Meyniel (1980): if every directed cycle of odd length in a digraph D has at least two pseudodiagonals then D has a kernel.
Sinks in Acyclic Orientations of Graphs
β
David D. Gebhard; Bruce E. Sagan
π
Article
π
2000
π
Elsevier Science
π
English
β 183 KB
Greene and Zaslavsky proved that the number of acyclic orientations of a graph G with a unique sink at a given vertex is, up to sign, the linear coefficient of the chromatic polynomial. We give three proofs of this result using pure induction, noncommutative symmetric functions, and an algorithmic b
On the existence of kernels and h-kernel
β
H. Galeana-SΓ‘nchez
π
Article
π
1992
π
Elsevier Science
π
English
β 272 KB