Last edited 15jan19, 1nov18, 13sep18 by

Experiments with David Eck's glsim.js Library

Top down, are current versions of classic homotopies.

jazzVenus The original collaboration with Donna Cox and Ray Idaszak, NCSA, 1987.

Works best in Chrome or Firefox with a keyboard. But might work on your phone. Email me if it doesn't.

jazzSkel Template RTICA by Glenn Chappel and Chris Hartman 1992

jazzDunce John Dalbec's animation of the Zeeman-Duncehat contraction

jazzNeck Morin's Eversion of an annulus


Short Venus Abstract

My Etruscan Venus page has a few broken links. Sorry!

Incomplete Venus Documentation, but enough for an introduction.

Short Snail Abstract

Snail Documentation in Chapter 13, Thomas Davis, Scientific Visualization in Mathematics and Science Teaching, AACE, 1995.

Neck Eversion Documentation Morin's eversion of the annulus underlies all of the eversions of the sphere using Morin's central model.

Dunce Hat Documentation This is the only known documentation written by John Dalbec himself. The video created for the 1993 joint meeting of the AMS and DMG in Heidelberg is lost.

Older Versions
jazzNeck Morin's Eversion of an annulus
Oldest version of jazzSnail

Earlier version of jsSnail

First version of oc1 and tr1

First version jsSkel.html