André van Renssen

Let *P* be a set of points in the plane. It has previously been
shown that the half-Θ_{6}-graph (which is identical to the
Delaunay graph whose empty visible region is an equilateral triangle)
is a plane 2-spanner of the complete graph on P. This graph, however,
can have high degree. Bonichon et al. show how to construct a plane
6-spanner with maximum degree 6 [ICALP 2010]. In this talk, we simplify
the construction method of this bounded-degree spanner and the proofs
associated with it.