Iterated line digraphs are asymptotically dense
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We show that the line digraph technique, when iterated, provides dense digraphs, that is, with asymptotically large order for a given diameter (or with small diameter for a given order). This is a well-known result for regular digraphs. In this note we prove that this is also true for non-regular digraphs.
Is part ofLinear Algebra and its Applications, 2017, vol. 529, p. 391-396
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