Single bend paths on a grid have strong helly number 4: errata atque emendationes ad "edge intersection graphs of single bend paths on a grid"
In this note, we prove that a collection of single bend paths on a grid, the so-called B-1 representations, have strong Helly number 4. This corrects a false claim from Ref. [Golumbic et al., Networks, 54 (2009), 130-138; and other errata are also corrected. (c) 2013 Wiley Periodicals, Inc.
strong helly number intersection graphs b-1 -epg graphs intersecting paths on a grid