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Exact Expectations for Random Graphs and Assignments

Published online by Cambridge University Press:  04 July 2003

HENRIK ERIKSSON ,
KIMMO ERIKSSON  and
JONAS SJÖSTRAND
HENRIK ERIKSSON
Affiliation:
NADA, KTH, SE-100 44 Stockholm, Sweden (e-mail: henrik@nada.kth.se
KIMMO ERIKSSON
Affiliation:
IMA, Mälardalens högskola, Box 883, SE-721 23 Västerås, Sweden (e-mail: kimmo.eriksson@mdh.se)
JONAS SJÖSTRAND
Affiliation:
NADA, KTH, SE-100 44 Stockholm, Sweden (e-mail: jonass@nada.kth.se)
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Abstract

For a random graph on n vertices where the edges appear with individual rates, we give exact formulas for the expected time at which the number of components has gone down to k and the expected length of the corresponding minimal spanning forest.

For a random bipartite graph we give a formula for the expected time at which a k-assignment appears. This result has a bearing on the random assignment problem.

Type
Paper
Information
Combinatorics, Probability and Computing , Volume 12 , Issue 4 , July 2003 , pp. 401 - 412
Copyright
2003 Cambridge University Press

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