Abstract
We consider depth first search (DFS for short) trees in a class of random digraphs: am-out model. Let π i be thei th vertex encountered by DFS andL(i, m, n) be the height of π i in the corresponding DFS tree. We show that ifi/n→α asn→∞, then there exists a constanta(α,m), to be defined later, such thatL(i, m, n)/n converges in probability toa(α,m) asn→∞. We also obtain results concerning the number of vertices and the number of leaves in a DFS tree.
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References
Ajtai, M., Komlós, J., andSzemerédi, E.: The longest path in a random graph,Combinatorica 1 (1981), 1–12.
Bollobás, B. Random Graphs, Academic Press, (1985).
Fenner, T. I., andFrieze, A. M. On large matchings and cycles in sparse random graphs,Discrete Mathematics 59, (1986), 243–256.
Fernandez de la Vega, W. Long paths in random graphs,Studia Sci. Math. Hung. 14 (1979), 335–340.
Gibbons, A. Algorithmic Graph Theory, Cambridge University Press, (1985).
Goursat, E. A Course in Mathematical Analysis, Vol. 1 Dover Publ., New York, (1959).
Suen, S. PhD dissertation, University of Bristol, UK, (1985).
Suen, S. On the largest strong components inm-out digraphs,Discrete Math 94 (1991), 45–52.
Suen, S. On large induced tree and long induced cycles in sparse random graphs,J. Combinat. Th. Ser. B. 56 (1992), 250–262.
Tarjan, R. Depth first and linear graph algorithms,SIAM. J. Comput 1 (1972), 146–160.