Fibers showing the 12 cores for rings of dodecahedra making up
the 120-cell. The view shown here is looking
straight down the z-axis. I don't have a poster-size version
of this one, so you'll have to use the
Sage source to output a high-resolution version.
The periodic table of finite simple groups, by Ivan Andrus; he
announced and explained it on
this blog post
.
This is a very large image (256 Megapixels = .25 Gigapixels; file
is 17MB). It's a fractal arising from iterating powers of the
complex cosine -- different colors indicate different amounts of
periodicity. It's an open question whether the coral-colored
region in the middle ("period 1") is precisely a cardioid. I
wrote about it on
a mathoverflow question which has some partial answers, but
I would really like to know more about it!
This calendar from 1988 is one from the early days of
computer-generated math pictures, and shows 12 minimal surfaces.
Unfortunately I don't have any higher resolution than this, and
I've lost or forgotten the original source.