Enumeration of K-Trees and Applications

Autor: Mahendra Jani, Robert G. Rieper, Melkamu Zeleke
Rok vydání: 2002
Předmět:
Zdroj: Annals of Combinatorics. 6:375-382
ISSN: 0219-3094
0218-0006
DOI: 10.1007/s000260200010
Popis: A k-tree is constructed from a single distinguished k-cycle by repeatedly gluing other k-cycles to existing ones along an edge. If K is any nonempty subset of {2, 3, 4, . . .}, then a K-tree is obtained as above using k-cycles with $ k \in K $ . In this paper, we enumerate ordered K-trees, show that the ratio of terminal edges to total number of edges in K-trees is $ \frac{k-1}{k} $ , and use the K-trees as models to enumerate planted plane cacti.
Databáze: OpenAIRE