“…The spanning tree congestion of graphs has been studied intensively [2,3,4,5,6,7,8,9,10,11,12,13,14,15,16]. In this note, we study the spanning tree congestion of Hamming graphs.…”
“…The spanning tree congestion of graphs has been studied intensively [2,3,4,5,6,7,8,9,10,11,12,13,14,15,16]. In this note, we study the spanning tree congestion of Hamming graphs.…”
“…We use the following definitions introduced in [Ost04] (some of them were known before, see [Sim87]). Let T be a spanning tree in G. The spanning tree congestion of G is…”
The main goal of this article is to introduce new quantitative characteristics of cycles in finite simple connected graphs and to establish relations of these characteristics with the stretch and spanning tree congestion of graphs. The main new parameter is named the support number. We give a polynomial approximation algorithm for the support number with the aid of yet another characteristic we introduce, named the cycle width of the graph.
“…The spanning tree congestion has been studied intensively [4,5,8,9,12,10,16,15,17,18]. Castejón and Ostrovskii [5], and Hruska [8] independently determined the spanning tree congestion of the two-dimensional grid P m P n .…”
Let G be a connected graph and T be a spanning tree of G. For e ∈ E(T), the congestion of e is the number of edges in G joining the two components of T − e. The congestion of T is the maximum congestion over all edges in T. The spanning tree congestion of G is the minimum congestion over all its spanning trees. In this paper, we determine the spanning tree congestion of the rook's graph K m K n for any m and n.
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