This program is motivated by the material in Chapter 2 of Conway and Guy's "The Book of Numbers" book. I think someone on this list recommended the book; it is a wonderful exposition of various patterns of numbers.

-- Fred Yankowski fred@OntoSys.com tel: +1.630.879.1312

Belated response Fred. I'm interested in what you're doing. 'Book of Numbers' was first mentioned by another poster saying my 'Numeracy + Computer Literacy' series reminded her (?) of this book: http://www.inetarena.com/~pdx4d/ocn/numeracy0.html I didn't know what she meant exactly, and I didn't run out to check right away -- was feeling kinda down on Conway, the world famous mathematician, 'cause he'd been dissing one of my fave teachers over on geometry_research (Math Forum)... Anyway, I've since checked it out from the library, and lo and behold, _lots_ of the same threads. Way cool. And I've just been playing with residue classes myself in the crypto + group theory + python paper I've been working on of late: http://www.inetarena.com/~pdx4d/ocn/crypto0.html I don't have VPython running yet. It wants to install to my C drive for some reason, plus I'm only using 2.1 and will never go back (burned all bridges) -- not sure it works w/ 2.1 yet. I encourage you to do a write-up re your project on the web if you think that's worth your while. That's where you can show how to operate with your code, explain what it does, and maybe give some screen shots, for those not actually running the right stuff. Just a thought. Kirby