Polarities (Part 1)

This is a progress report on some joint work with Xiaoyan Li, Nathaniel Osgood and Evan Patterson. Together with collaborators we have been developing software for ‘system dynamics’ modelling, and applying it to epidemiology—though it has many other uses. We’ve written two papers about it, and given plenty of talks:

• Software for compositional modeling.

But the software keeps growing—so it’s time to write another paper or two! First we’re writing one aimed at applied category theorists, wher...