## Abstract A graph is defined to be randomly matchable if every matching of __G__ can be extended to a perfect matching. It is shown that the connected randomly matchable graphs are precisely __K__~2__n__~ and __K~n,n~__ (__n__ โฅ 1).
Randomly planar graphs
โ Scribed by Daniel C. Isaksen; David P. Moulton
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 189 KB
- Volume
- 175
- Category
- Article
- ISSN
- 0012-365X
No coin nor oath required. For personal study only.
โฆ Synopsis
A graph G is randomly planar if every planar embedding of every connected subgraph of G can be extended to a planar embedding of G. We classify these graphs.
1. Introduction
Many properties of graphs have been 'randomized' by various mathematicians. Examples include the notions of randomly eulerian [2], randomly traceable [1], randomly matchable , and randomly decomposable [3] graphs. We continue in this vein by randomizing planarity. Throughout this note, G will denote a finite connected graph with labelled vertices. For the sake of brevity, we will only provide sketches of proofs.
๐ SIMILAR VOLUMES
A nonempty graph G is randomly H-decomposable if every family of edge-disjoint subgraphs of G, each subgraph isomorphic to H, can be extended to an H-decomposition of G. A characterization of those randomly H-decomposable graphs is given whenever H has two edges. Some related questions are discussed
## a b s t r a c t For an ordered set W = {w 1 , w 2 , . . . , w k } of vertices and a vertex v in a connected graph G, the ordered k-vector r(v|W representation of v with respect to W , where d(x, y) is the distance between the vertices x and y. The set W is called a resolving set for G if disti