
The identity for a 50x50 grid graph created using 2photon lithography
then imaged using an scanning electron microscope. Its size is
approximately half the width of a hair. (Created by Joy
Perkinson.)


Closeup of the above.


Another closeup.


Identity on the Klein bottle grid graph with a single sink. Created in
3D using Bryan Head's GSoC application. With his
application, one may rotate the images.


The maximal stable configuration plus the identity configuration in
the process of stabilizing. (Again using Bryan Head's application.)


The identity element on a torus grid graph with one sink.


Same as above but in 3D.


The identity element on a torus grid graph in which each vertex has an
outedge to the north and east and an inedge from the south and west.


Same as above but in 3D.


Identity on a hex grid with sides of length 12. Each vertex has
degree 6.


Identity on a hex grid with sides of length 14.


Identity on a hex grid with sides of length 29.


Identity on an aztec diamond graph.


Four million grains of sand dropped a single vertex on an infinite grid and
allowed to settle. High resolution. (Thanks to Seth Terashima.)


Guess!


Identity elements for sandpiles on a grid with evolving boundary
(thanks again to Seth.)


Identity for the 20x20 grid graph.


Art? (These are created using Bryan Head's application.)








