| Who would be interested in the videos Knot Not and Outside In? Outside
In illustrates turning a sphere inside-out using smooth movements, and
Knot Not is an award-winning video about knot theory. (I think there's
a description of it in here somewhere -- anybody remember where?)
We could set up another math dinner and video-watching if there's
enough interest.
-- edp
Public key fingerprint: 8e ad 63 61 ba 0c 26 86 32 0a 7d 28 db e7 6f 75
To find PGP, read note 2688.4 in Humane::IBMPC_Shareware.
|
| Silvio Levy posted in sci.math the following about _Outside In_ and
_Not Knot_:
In 1957 Steve Smale proved it was theoretically possible to turn a
sphere inside out by a means of a smooth motion, when
self-intersections are allowed. A practical way to do it was not found
until years later, by Arnold Shapiro. Even after that the problem
remained hard to visualize, in spite of many wonderful drawings by
several authors, physical models by Charles Pugh, and a computer
animation made in the 1970s by Nelson Max. _Outside In_ is a
high-quality 20-minute animation made at the Geometry Center that
explores ideas of Bill Thurston's to display a very symmetric eversion
that is built up from commonly encountered motions.
_Not Knot_, also made at the Geometry Center and released in 1991, is
about knots, symmetry groups and hyperbolic geometry. It has won
several prizes including the Prix Ars Electronics and Nicograph (the
Japanese computer graphics society). Although the main purpose of
these two movies is expository, a lot of work was put into making them
visually attractive as well.
-- edp
Public key fingerprint: 8e ad 63 61 ba 0c 26 86 32 0a 7d 28 db e7 6f 75
To find PGP, read note 2688.4 in Humane::IBMPC_Shareware.
|
| Found this in comp.sys.dec today!
Subject: It's been 10 years since I left DEC! [comp.sys.dec #40126]
Newsgroups: alt.sys.pdp8,comp.sys.dec,alt.lang.teco
------ Forwarded Article <315846BF.4267@mathpro.com>
------ From Stanley Rabinowitz <stan@mathpro.com>
------ Date: Tue, 26 Mar 1996 14:34:23 -0500
------ Organization: MathPro Press
It has been 10 years now since I left DEC and I would love to see some
of my friends from PDP-8 land, from the Mill, from DECset-land and
VMS-world, and RTL haven, etc. whom I have lost touch with. Also my
math notes friends and all the others from note files at DEC that I
followed (I was TURTLE::STAN, among other nom-de-plum's). [Have all my
questions in the trivia notes file been answered?]
Anyway, I would like to invite all my friends to come join me at a
10-year anniversary get-together on Monday, April 1, 1996 at Ming
Garden in Nashua, NH. 6-6:15 PM. Spicy food. Good company.
Please invite other friends of mine that you are in contact with who
might not see this post.
For more details or directions to Ming, see
http://math.mathpro.com/~stan/reunionDinner.html.
Come prepared to discuss:
"Great Hacks that have occurred in the last 10 years".
- stan -
|