Mai 26, 2014 - 
3D-Druck Modelle, 3D-Druck News, 3D-Druck Videos
3D-Druck Modelle, 3D-Druck News, 3D-Druck Videos Nothing is more fun than a 3D printed hypercube of monkeys
The quaternion group {1,i,j,k,-1,-i,-j,-k} is a beautiful group of order eight. It didn’t have a physical representation because the object should be 4-dimensional. But has the quaternion group ever appeared as the symmetry group of an object? The answer is yes.
(…weiter auf 3ders.org)
2014 Hari Shankar Memorial lecture: „How to make sculptures of 4-dimensional things“
The Hari Shankar Memorial Lecture is an annual public lecture held at the University of Northern Iowa.
Slides: https://www.math.okstate.edu/
(Quelle: Youtube / Henry Segerman)