Table of Contents:
- Introduction
- Kuiper's initial question
- Tight orientable surfaces
- Tight non-orientable surfaces
- A Tight projective plane
with two handles
- There is no tight projective plane
- There is no tight Klein bottle
- Tightness and its consequences
- A Bound on the total absolute
curvature integral
- Tightness and the convex hull
- Top sets and top cycles
- Tightness and polar height functions
- Tightness and the two-piece property
- Tightness and homology: the
modern definition
- Tightness and polyhedral surfaces
- Examples of non-tight polyhedra
- Proof of the tightness lemma
- The smooth solution
- Differences between the
polyhedral and the smooth cases
- The polyhedral solution
- Vertex stars of immersions
- Triple points of immersions
- Tightness for polyhedral surfaces
- Examples of non-tight polyhedra
- Proof of the tightness lemma
- Comparison to Kuiper's level sets
- Level 1: The initial circle
- Level 2: Pulling one side across
- Level 3: The initial self-intersection
- Level 4: Adding the triple point
- Level 5: The critical level
- Level 6: After the critical level
- Level 7: No more self-intersection
- Level 8: The final circle
- Pictures of the polyhedral solution
- Interactive pictures
- The complete model
- The central core
- Movies of the model
- The sequence of level sets
- Building the surface up
from the bottom
- The central core rotating
- Still pictures of the model
- Comparison to Kuiper's level sets
- Templates for making the model
- Other related results
- Table of Figures
- Bibliography
Main entry point
8/11/94 dpvc@geom.umn.edu --
The Geometry Center