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cs.DM2011
Convex obstacle numbers of outerplanar graphs and bipartite permutation graphs
Radoslav Fulek, Noushin Saeedi, Deniz Sarioz
The disjoint convex obstacle number of a graph G is the smallest number h such that there is a set of h pairwise disjoint convex polygons (obstacles) and a set of n points in the p…
cs.DM2011
On Sets of Lines Not-Supporting Trees
Radoslav Fulek, Daniel Neuwirth
We study the following problem introduced by Dujmovic et al. Given a tree , on vertices, a set of lines in the plane and a bijection $ι: V \rightar…