Isle Ex, my website, has a lot
of material related to CAs that serves to supplement these help documents.
The most relevant pages are listed below.
As for non-Isle Ex resources, I've gathered
a few excellent links below, though some of the annotations are a bit dated.
(The list was migrated from one in the WebsideCA docs, receiving
only a partial update in the process.) When I find time I'll update the text
further, but I make no pretense of staying abreast of the Web CA scene.
Thankfully, though, a couple of these sites themselves do a good job of that.
CA Music Background Information
Contains an overview on CAs and CA terms which, as the title implies, had its
origin in the context of my CA music exhibit (before I'd done any Java stuff).
It is recommended, though, because it introduces CAs in a way that helps you
grok the quirky Cellsprings slant on the subject.
Cellular Automaton Music
The headquarters for my "big" innovation related to CAs, viz., musifying their
Mitchel Resnick and Brian Silverman (the discoverer of the immortal Brain rule)
have created an excellent Java-based active essay on
complexity concepts, which uses several CA rules for illustration.
Highly recommended as an accessible hands-on way to quickly build the conceptual
background for getting more out of Cellsprings. If you're
new to CAs, this should be the first place you visit.
In the last year Mirek Wójtowicz has produced some unparalleled Web
resources for CA exploration, including an extensive
and a corresponding
representative states. To top it off, Mirek has recently written
applet that runs the same rules and patterns as his excellent Win32 program
MCell. Mirek also has other sections devoted to sampling the
and greatest happenings on the CA programming front. In my rule and seed
find many references to Mirek and MCell, and for good reason.
Alan Hensel's Life applet
For Conway's Life exploration, the conventional wisdom is "the bigger and
faster the better". And here's the biggest and
the fastest kid on the block, hands down. It's fitted with a rich assortment
of cell-patterns, and, though it's geared to Life, it will also run most other
rules of the standard Moore OT persuasion. Very impressive.
CA-based Complexity Studies by Tomoaki Suzudo
Dr. Suzudo's fascinating and distinctive three-state von Neumann rules are a
significant contribution to self-organization research in CAs. I imported several of
the "springiest" examples into Cellsprings, but since then he has
discovered still others that appear to rival the first installment. Suzudo's site
features a small applet to demo his rules, so check 'em out. And maybe some
enterprising soul would like to try entering and saving them in
Cellsprings for us.
Schaller's CAOS applet
Martin Schaller, a doctoral student at CERN, has posted the best applet
I've seen for running one-dimensional CAs. 1-D CAs offer much of the
behavioral richness of 2-D CAs in a simpler model, making it possible to view
whole CA histories at a glance. But seeing is believing, so load CAOS
and set the display to Size=1/Flow=scroll and
the rule group to Sites=5/Rule=symmetric, making sure that
Init=random. Wow! An extraordinary world
of interacting gliders. Now explore other 5-site symmetric rules by
toggling rule-bits along the right side (only some of which are enabled, because
of the symmetry). You should find some more terrific rules in no time. Great
Stephen Wolfram's CA Papers
Landmark articles by one of the leading lights in CA research. These are technical
treatments, but more accessible than most such. I'm living proof that a
non-mathematician can get something from them. Also, Wolfram's
well-implemented HTML is an example others would do well to emulate for
the format of online research articles.
The Primordial Soup Kitchen
The website of mathematician David Griffeath, an expert on self-organization
in CAs and discoverer of the CA "type specimen" in that regard, the Cyclic CA.
A huge amount of CA lore reposes here (far more than I myself have found time
to examine), much of it decidedly "high-end" in nature. Besides
providing details, often Java-activated, of Griffeath's own cutting-edge
research, the site keeps abreast of sundry CA-oriented developments across
Paul's Page of Conway's Life Miscellany
This site features a very convenient catalogue of Java-animated Life patterns
that Paul Callahan created from Hensel's collection. Callahan's applet is actually more than just
an animator, though - it's an innovative little Life simulator in its own right.
And there's much else to interest the CA-tician in his "miscellany".
Scott Robert Ladd's LifeBox applet
This visually appealing CA applet by an expert Java programmer and author is home
to the Swirl rule. LifeBox also runs other Moore OT rules with
or without low-depth refractory decay. In addition, Ladd's site features a
number of other intriguing applets in the complexity studies vein.
Copyright © 1998-2000 J. M. G. Elliott.