Upward Planning of Single-Source Acyclic Digraphs

  title={Upward Planning of Single-Source Acyclic Digraphs},
  author={Mike Hutton and Anna Lubiw},
  journal={SIAM J. Comput.},
An upward plane drawing of a directed acyclic graph is a plane drawing of the graph in which each directed edge is represented as a curve monotone increasing in the vertical direction. Thomassen [14] has given a non-algorithmic, graph-theoretic characterization of those directed graphs with a single source that admit an upward plane drawing. We present an e cient algorithm to test whether a given single-source acyclic digraph has an upward plane drawing and, if so, to nd a representation of one… CONTINUE READING


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