Selecting a small picture will enlarge it.
These show the surface from different viewpoints.
Notice that the three segments of
self-intersection (double points) are only partially visible. The six
pinch points, which occur at the endpoints of the self-intersection
segments, are visible.
The surface has been
rotated 90 degrees forward (toward the camera) from the previous
view. Half of each of the three segments of self-intersection are
visible. Also visible is the triple point, which occurs where the
three segments intersect. Three of the pinch points are visible.
The triple point and five of
the pinch points are visible. Two of the segments of self-intersection
are almost entirely visible, and half of the third segment is visible.
Color is assigned
according to v parameter. This is the same view depicted in the first
picture.
These show the surface sliced open. Color is assigned according to v parameter.
The triple point is
visible through a "window" which was created by cutting away part of
the surface. All six pinch points are visible.
The surface has been cut
open above the triple point to reveal the structure of the
double-point segments. They occur where two sheets of surface
intersect. The piece on top is easily seen to be a The Roman Surface
Comments to: webmaster@www.geom.uiuc.edu
Created: Jun 27 1995 ----
Last modified: Fri Aug 11 00:59:07 1995
Copyright © 1995 by
The Geometry Center,
all rights reserved