On reconstructing maximal outerplanar graphs
β Scribed by William B. Giles
- Publisher
- Elsevier Science
- Year
- 1974
- Tongue
- English
- Weight
- 421 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0012-365X
No coin nor oath required. For personal study only.
β¦ Synopsis
Let C; be a graph, u a vertex of G, and G -{u) the subgraph of G obtained from G by removing the vertex u and all arcs incident with u. G-$1 is calted a point~e~eti~n of G. In f 51, Ulam conjectured that if G has at least three vertices, then G can be reconstructed (up to isomorphism) froin the coilectinn of ati subgraphs G -{u] for u a vertex of G. f 41 contains many references relating to work on this conjecture; in addition, it is proved for o~~te~~an~ maths in [ 1 f .
Harary [ 2f conjectured that if G has at least four vertices, then it can actually be rwonstructed from the isomorphism types of its pointdeletions, ~th~~~t kn~~w~edg~~ of their mu~tip~~citie~. In 4 , Manvel pmed the Harary conjecture for maximal outerplanar graphs. The rersult of the present paper is the following strengthening of the theorem of Manvel :
π SIMILAR VOLUMES
## Abstract The center of a graph is defined to be the subgraph induced by the set of vertices that have minimum eccentricities (i.e., minimum distance to the most distant vertices). It is shown that only seven graphs can be centers of maximal outerplanar graphs.
## Abstract We prove that a 2βconnected, outerplanar bipartite graph (respectively, outerplanar nearβtriangulation) with a list of colors __L__ (__v__ ) for each vertex __v__ such that $|L(v)|\geq\min\{{\deg}(v),4\}$ (resp., $|L(v)|\geq{\min}\{{\deg}(v),5\}$) can be __L__βlistβcolored (except when