Polytopia at Yahoo! Groups

Re: "Ah, this is so much fun." - THE 4900

Alan M — Sun, 25 Oct 2009 21:54:30 GMT

... 1 4 9 16 25 36 49 64 81 100 121 144 169 196 225 256 289 324 361 400 441 484 529 576 ... 4900 ... to ... can ... ?

Re: no peaks & no valleys

Alan Michelson — Thu, 15 Oct 2009 04:51:33 GMT

I have the wavy color wheel according to the red-green-blue model, and I also have the flattened color wheel according to how we perceive the color spectrum.

Math Midway

jjkostick — Wed, 14 Oct 2009 13:19:17 GMT

For those in the eastern PA area, the Math Midway will be traveling to Allentown, PA at the end of the week. The Math Midway is a carnival-style traveling

Re: peaks & valleys

Alan Michelson — Wed, 14 Oct 2009 04:07:08 GMT

... From: Alan Michelson Subject: Re: [Polytopia] Re: peaks & valleys To: Polytopia@yahoogroups.com Date: Monday, October 5, 2009,

Re: 60 degree jupiter, Earth's second moon

Alan Michelson — Wed, 14 Oct 2009 00:52:22 GMT

- spheric, loop orbit- planar- saddle, box orbit

Re: peaks & valleys

Alan Michelson — Mon, 05 Oct 2009 19:22:59 GMT

I see what you mean: Here's a picture of a hyperbolic paraboloid within a tetrahedral wireframe; in other words, a skew quadrilateral. ... From:

Re: no peaks & no valleys [flat]

cdsgraphics1952 — Mon, 05 Oct 2009 11:00:10 GMT

You are right about the Monkey Saddle, though I tended to see it as more as a square version of the Calgary Saddle Dome that appeared to have only four

Re: no peaks & no valleys [flat]

Alan M — Mon, 05 Oct 2009 03:21:11 GMT

... Actually, I'm talking about leveling the color field flat, so that the average value of the three colors is around 50% (between black and white), not about

Re: no peaks & no valleys [2 Attachments]

Alan M — Thu, 01 Oct 2009 17:31:44 GMT

... 4 colors, but the spectrum has 6 dominate (3 peaks & 3 Valleys) as my Radial_Spectrum_HeightField file illustrates. If there were only 4 colors, then that

Re: no peaks & no valleys [2 Attachments]

cdsgraphics1952 — Thu, 01 Oct 2009 11:34:04 GMT

I think it would resemble a flattened Monkey Saddle if there were only 4 colors, but the spectrum has 6 dominate (3 peaks & 3 Valleys) as my

New file uploaded to Polytopia

Thu, 01 Oct 2009 11:16:52 GMT

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the Polytopia group. File : /Craig's

Re: no peaks & no valleys [2 Attachments]

Alan Michelson — Thu, 01 Oct 2009 02:21:09 GMT

... From: Alan Michelson Subject: Re: [Polytopia] Re: three peaks & three valleys [2 Attachments] To: Polytopia@yahoogroups.com Date:

Infinite Regular Polyhedra

Alan M — Wed, 30 Sep 2009 22:50:02 GMT

... This is explained in http://en.wikipedia.org/wiki/Infinite_skew_polyhedron and http://www.superliminal.com/geometry/infinite/infinite.htm

Re: three peaks & three valleys

Alan Michelson — Tue, 29 Sep 2009 17:09:28 GMT

... From: cdsgraphics1952 Subject: [Polytopia] Re: three stooges To: Polytopia@yahoogroups.com Date: Sunday, September 27, 2009, 5:48

Re: three stooges

cdsgraphics1952 — Sun, 27 Sep 2009 12:48:33 GMT

Using a lineal spectrum as a terrain heightfield and again as the color map overlay provides a clue to the saturation levels of the spectrum as a file that I