Greg McShane

Bureau 328, Institut Fourier.

What do I do?

and a little more…

I am a (low dimensional) topologist a subject which has it's origins in the work of the French mathematician Henri Poincaré. Recently I have been doing a lot of topology and WebGL and 3D printing of fractals.

I’m back from a sabbatical in the US at Brown University Illustrating Math and visits to

And where I got time to do write stuff for Inkscape like this Apollonian Packings

This is what I look like
IHP 2012 : La Maison des Maths
IHP 2012 : La Maison des Maths

More real math on blackboards

  1. Teaching
  2. Research
  3. FabLab
  4. FdS
  5. Other stuff

Teaching 2019-20

First semester

Didn’t teach as I was on sabbatical at Brown University. Illustrating Math.

Last year I taught L3B algebra.


For the last few years years I was teaching M1 Algebra

Second semester

IMPORTANT : classes are suspended because of the pandemic.

I’ll probably finish the graduate course online using Zoom
Notes and reading material: Course Page



If you want to advertise conferences/jobs please mail me
Meetings in low dimensional topology and dynamics

Rencontres du GDR

Upcoming in 2020:

Previous conferences


  1. Teichmueller space
  2. Modular group actions
  3. Applications to low dimensional topology

This is a quasi-Fuchsian manifold - it’s a basic kind of 3 manifold homeomorphic to the product of a surface and an interval together with a (non unique) choice of hyperbolic metric. Togther with Prof. S. Kojima of TITEC we are working on applying converegence results for quasi-Fuchsian manifolds and Teichmueller theory to get information about closed hyperbolic manifolds.

With Bill Goldman and a couple of his ex students we have been working on a book that just got published by the AMS. Much of it is dedicated to explaining this picture of an invariant fractal in the character variety.


Recent preprints



From March 2014 I’ve also been working with the MSTIC FabLab making mathematical curiosities from wood. I’m mainly interested in constructing geometric objects in wood using kerf bending patterns. Wood prepared using a laser cutting machine can be bent and joined to like a 3 dimensional jigsaw puzzle.

photo photo

In November 2014 I was invited to take part in a workshop for architectural students Architect 2.0 Grenoble to explain the techniques and possibilities.

photo photo