This new book on the enneagram is written by my longtime friend and fellow Gurdjieffian Chris Wertenbaker.
Chris presents a range of interesting insights regarding the mathematical relationships in the diagram, including an exploration of its fractal nature.
The book includes a simplified version of my illustration of the fractal enneagram.
My own most recent book on the subject, The Universal Enneagram, will soon be available as a paperback book on Amazon. I'll publish an announcement when that takes place.