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    STUDIA INFORMATICA - Issue no. 2 / 2015  

Authors:  .
  Abstract:   In this article we present methods and algorithms for arcs reorientation in a transitive orientation of a comparability graph. These methods are based on special classes of subgraphs called B-stable sub-graphs. A stable subgraph F of the undirected graph G = (X;U) is called B-stable if F has no common vertices with any other stable sugraph M of G or F is proper subgraph of M. Algorithms of the reorientation of arcs are based on the factorization procedure.

2010 Mathematics Subject Classi fication. 05C17, 05C20.
Key words and phrases. graph factor, B-stable subgraph, transitively orientable graph.
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