BOUNDS OF THE LONGEST DIRECTED CYCLE LENGTH FOR MINIMAL STRONG DIGRAPHSBOUNDS OF THE LONGEST DIRECTED CYCLE LENGTH FOR MINIMAL STRONG DIGRAPHS
摘要(Abstract)：
<正> In this paper we present the upper and lower bounds of the longestdirected cycle length for minimal stroug digraphs in terms of the numbers of verticesand arcs.These bounds are both sharp.In addition,we give analogous results forminmal 2-edge connected graphs.
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