## Martijn van Manen : COE Lecture Series

### Title: From the cut-locus via the medial axis to the Voronoi diagram and back

There are several notions of what I call 'sets in the middle',
sets that are defined by means of some distance function and
such that they lie at equal distance from one or more
objects.

The most well-known of these is the cut-locus. We will define
it and apply some elementary symplectic geometry to calculate it in a
special case. In the second lecture we turn our attention
to the cut-locus of an embedded manifold: the medial axis.

Other subjects will be the conflict set and the symmetry
set. The third lecture will be about Voronoi diagrams.

Throughout we will stress how all these objects and their singularities
are related to each other.