Stage-graph Representations Jj Org-r Udiger Sack Y{k

نویسندگان

  • Evangelos Kranakis
  • Danny Krizanc
  • Anil Maheshwari
چکیده

We consider graph applications of the well-known paradigm \killing two birds with one stone". In the plane, this gives rise to a stage graph as follows: vertices are the points, and fu; vg is an edge if and only if the (innnite, straight) line segment joining u to v intersects the stage. Such graphs are shown to be comparability graphs of ordered sets of dimension 2. Similar graphs can be constructed when we have a xed number k of stages on the plane. In this case, fu; vg is an edge if and only if the (straight) line segment uv intersects one of the k stages. We study stage representations of stage graphs and give upper and lower bounds on the number of stages needed to represent a graph.

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تاریخ انتشار 1995