I'm intermittently active on ResearchGate, mostly to do with relativity theory, but also with some other geometry stuff (like fractals). I discovered the Jerusalem Cube, and the Baird Delta, the first proper three-dimensional extension of a triangle-ey Koch Curve.

Books:

• Relativity in Curved Spacetime (2007)
• Alt.Fractals: A visual guide to fractal geometry and design (2011)