## We enumerate, up to isomorphism, several classes of labeled vertex-transitive digraphs with a prime number of vertices. There are many unsolvedi enumeration problems stated in [S]. Recently, Robinson in [8] posed more enumeration problems. Here, we give some partial answer to the problems posed
On the number of distinct orderings of a vertex-labeled graph when rooted on different vertices
β Scribed by M Gordon; T.G Parker; W.B Temple
- Publisher
- Elsevier Science
- Year
- 1971
- Tongue
- English
- Weight
- 765 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0095-8956
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π SIMILAR VOLUMES
This note can be treated a s a supplement to a paper written by Bollobas which was devoted to the vertices of a given degree in a random graph. We determine some values of the edge probability p for which the number of vertices of a given degree of a random graph G E ?An, p) asymptotically has a nor
## Abstract We propose a seasonal cointegration model (SECM) for quarterly data which includes variables with different numbers of unit roots and thus needs to be transformed in different ways in order to yield stationarity. A Monte Carlo simulation is carried out to investigate the consequences of
Let G be a minimally k-edge-connected simple graph and u\*(G) be the number of vertices of degree k in G. proved that (i) uk(G) 2 l(jGl -1)/(2k + l)] + k + 1 for even k, and (ii) uI(G) 2 [lGl/(k + l)] + k for odd k 35 and u,(G) 2 lZlGl/(k + l)] + k -2 for odd k 27, where ICI denotes the number of v