## Abstract A detailed description is given of a recently discovered edge‐transitive but not vertex‐transitive trivalent graph on 112 vertices, which turns out to be the third smallest example of such a semisymmetric cubic graph. This graph has been called the __Ljubljana graph__ by the first autho
Completely classifying all vertex-transitive and edge-transitive polyhedra
✍ Scribed by Steven L. Farris
- Book ID
- 104642072
- Publisher
- Springer
- Year
- 1988
- Tongue
- English
- Weight
- 495 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0046-5755
No coin nor oath required. For personal study only.
✦ Synopsis
Recently A. Dress completed the classification of the regular polyhedra in E 3 by adding one class to the enumeration given by Gr/inbaum on this subject. This classification is the only systematic study of a collection of polyhedra possessing special symmetries which uses the generalized definition of a polygon allowing for skew polygons as well as planar polygons in E 3. This study gives necessary conditions for polyhedra to be vertex-transitive and.edgetransitive. These conditions are restrictive enough to make the task of completely enumerating such polyhedra realizable and efficient. Examples of this process are given, and an explanation of the basic process is discussed. These 'new' polyhedra are appearing more frequently in applications of geometry, and this examination is a beginning of the classifications of polyhedra having special symmetries even though there are many other such classes which lack this scrutiny.
📜 SIMILAR VOLUMES
Let G be a connected k-regular vertex-transitive graph on n vertices. For S V(G) let d(S) denote the number of edges between S and V(G)"S. We extend results of Mader and Tindell by showing that if d(S)< 2 9 (k+1) 2 for some S V(G) with 1 3 (k+1) |S| 1 2 n, then G has a factor F such that GÂE(F ) is
## Abstract Let __n__ be an integer and __q__ be a prime power. Then for any 3 ≤ __n__ ≤ __q__−1, or __n__=2 and __q__ odd, we construct a connected __q__‐regular edge‐but not vertex‐transitive graph of order 2__q__^__n__+1^. This graph is defined via a system of equations over the finite field of