@b4c50e1b @218dc8a6 @5fb5d869 @6278416d Yes, I messed with it a few years ago. Source code is available on Github https://github.com/kalvotom/ChristensenSet.jl

Of course, there are roots of polynomials up to some fixed degree, this is far from the limit 🙂. Also, the way you compose the final image plays a role (if I remember correctly, this is more like a density of roots, otherwise the picture would be huge).

If you are interested in some particular section of the image, I might give it another try and produce it in more detail.