Discrete Math Seminar: Steve Chaplick
Topic
Bend-Bounded Path Intersection Graphs: Sausages, Noodles, and Waffles on a Grill
Speakers
Details
Abstract:
In this paper we study properties of intersection graphs of k-bend paths
in the rectangular grid. A k-bend path is a path with at most k
90-degree turns. The class of graphs representable by intersections of
k-bend paths is denoted by B_k-VPG. We show here that forevery fixed k,
B_k-VPG is a strict subset of B_{k+1}-VPG and that recognition of graphs
from B_k-VPG is NP-complete even when the input graph is givenby a
B_{k+1}-VPG representation. We also show that the class B_k-VPG (for k≥
1) is in no inclusion relation with the class of intersection graphs of
straight line segments in the plane.
This is joint work with Vit Jelinek, Jan Kratochvil, and Tomas Vyskocil.
Additional Information
This is a Past Event
Event Type
Scientific, Seminar
Date
May 22, 2012
Time
-
Location