Spectacle Island, 8/9/2026

In my Math 22 course from 2022, I had covered some Island Mathematics which essentially boils down to a Poincare-Hopf theorem: The theorem is that the number of peaks and sinks minus the number of saddles is always 1 on an island that is simply connected. The "Spectacle Island" which we visited yesterday is such an island. It has two mountain peaks and one sink. Here is the slide show I had prepared for that class of March 11, 2022. It covers also a bit of the history of the spectacle island. It is spectacular. As usual, click on the thumbnail to see the 3D panorama and wait until it is loaded.

August 9, 2026, Oliver Website