Obtaining planarity by contracting few edges

The Planar Contraction problem is to test whether a given graph can be made planar by using at most k edge contractions. This problem is known to be NP-complete. We show that it is fixed-parameter tractable when parameterized by k

Obtaining planarity by contracting few edges

The Planar Contraction problem is to test whether a given graph can be made planar by using at most kk edge contractions. This problem is known to be NP-complete. We show that it is fixed-parameter tractable when parameterized by kk