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Journal of Graph Algorithms and Applications
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Recognizing IC-Planar and NIC-Planar Graphs

Recognizing IC-planar and NIC-planar graphs
Authors: Brandenburg, Franz;

Recognizing IC-Planar and NIC-Planar Graphs

Abstract

We prove that triangulated IC-planar graphs and triangulated $K_5$-free or $X4W$-free NIC-planar graphs can be recognized in cubic time. A graph is 1-planar if it can be drawn in the plane with at most one crossing per edge. A drawing is IC-planar if, in addition, each vertex is incident to at most one crossing edge and NIC-planar if two pairs of crossing edges share at most one vertex. In a triangulated drawing each face is a triangle. A graph is $K_5$-free ($X4W$-free) if it does not contain simple $K_5$ with a separating 3-cycle (extended 4-wheel graphs). In consequence, planar-maximal and maximal IC-planar graphs can be recognized in $O(n^5)$ time and maximum and optimal ones in $O(n^3)$ time.

Related Organizations
Keywords

IC-planar drawings, FOS: Computer and information sciences, Discrete Mathematics (cs.DM), Graph representations (geometric and intersection representations, etc.), 05C85, Planar graphs; geometric and topological aspects of graph theory, Computer Science - Discrete Mathematics

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    influence
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
6
Average
Average
Average
Green
gold