Dror Bar-Natan's Image Gallery:Symmetry:Tilings:The ** Group

Oakland building
A building near lake Merrit, Oakland March 2000.
Pixels on an LCD monitor
Pixels on an LCD monitor showing a Subpixel Font sample, August 2000.
Honolulu Wall
A wall design at the Honolulu International Airport, July 2000.
Beth El Quilt
A quilt at the Beth El Nursery School, Berkeley July 2000. (Ignore drawings)
Tan Hall, Berkeley
UC Berkeley's Tan Hall, April 2000.

Earth on a transparent annulus

The quotient orbifold for the group ** is an annulus - that is, a transparent tube (transparent so that the same picture, except for orientation, is seen on both sides).