A.Bar-Natan, M.Duchin, and R.Kropholler, Medium-scale curvature
for Cayley graphs, preprint. A pure math riff on an idea for gerrymandering:
we use Ricci
curvature to detect natural clusters in the dual graphs of states and other jurisdictions?
Data and software repositories
Ohio precinct shapefile
— we contacted all 88 counties in Ohio and collected information about
the locations of voting precincts, then digitized them and produced a publicly available
shapefile, the first for that
hosts a collection
of data and code to study the relationships between different ideas for graph-based
a jupyter notebook for studying the relationship between Black voting age percentage (BVAP)
and patterns of current Black congressional representation.