2010/06/26 by Y. O. Hamidoune, Hamidoune, Y. O., A. Lladó +3
Mathematics · #05C25 #11B75 #20D60 #Combinatorics (math.CO) #FOS: Mathematics #math.CO #msc:05C25 #msc:11B75 #msc:20D60
paper · pdf · doi:10.48550/arxiv.1006.5129
arxiv created 2010/06/26 · arxiv updated 2010/06/29
We investigate the structure of a digraph having a transitive automorphism group where every cutset of minimal cardinality consists of all successors or all predecessors of some vertex. We improve most of the existing results in this area.