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Polytopia

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Group Information

  • Members: 410
  • Category: Geometry
  • Founded: Dec 10, 2001
  • Language: English
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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 :...
173 May 10, 2012
9:25 pm

Alan Michelson
a.michelson
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Perhaps a good question to ask regarding this problem is what spherical geometry programs might be available that might be able to tackle this sort of thing. I...
13 Apr 12, 2012
8:39 pm

railfaninnj
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Hello folks, I thought you might be interested in my special offer for my polyhedral lamps as seen here :...
2 Apr 12, 2012
5:23 pm

Alan M
a.michelson
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I'm currently selling my Great Stella and Stella4D software for a third the normal price, as an experiment to see how it affects sales. Great Stella is a...
2 Apr 7, 2012
10:13 pm

Samuel Verbiese
samve47
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Hi All I have just released Antiprism 0.21, which is a set of command line tools for modelling polyhedron ...
1 Mar 26, 2012
5:27 pm

Adrian Rossiter
adrianrossiter
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I've always had an interest in spherical geometry. I once wrote a program for an HP HP-97 printing programmable calculator that calculated iteratively (miunute...
4 Mar 24, 2012
12:46 am

Albert Redditt
albert_redditt
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Hi folks, Geometric modeling is a great passion of mine. I've been experimenting with techniques to build polyhedra for many years now and though it all I've...
1 Mar 7, 2012
4:29 am

Cosmo Guffa
playful.geom...
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Buckyballs Astronomers have discovered the solid form of tiny carbon spheres in deep space inside a vast cloud of particles locked in orbit around two distant...
2 Mar 6, 2012
2:23 am

Alan M
a.michelson
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This is the challenge rewritten. I have also tried to get it as short as possible and write so that graphics (there are two graphics under photos for this)...
57 Mar 6, 2012
1:25 am

Alan M
a.michelson
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1. The name truncated icosidodecahedron <http://en.wikipedia.org/wiki/Truncated_icosidodecahedron#Other_names>; , originally given by Johannes Kepler ...
3 Jan 14, 2012
3:08 am

Alan M
a.michelson
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I wish you a Happy Christmas, I wish you a Happy Christmas. I wish you a Happy Christmas, And a Merry New Year!  I wish you a Happy Christmas, I wish you...
1 Dec 25, 2011
7:45 am

Alan Michelson
a.michelson
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Hello All, For the last few months I have been making a web page that describes how the taijitu yin-yang symbol can be found in the icosahedron and...
4 Nov 7, 2011
8:11 pm

Alan M
a.michelson
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Polytopia Group Participants, The Equitist Advocacy group has just published -- circa the May 5th, 2011 anniversary of the birth of Karl Marx [this timing is...
2 May 11, 2011
10:45 pm

Allenlubow
phi16
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Polytopia Group Participants, A new book has just been released by Foundation Encyclopedia Dialectica [F.E.D.], entitled -- A Dialectical "Theory of...
2 Apr 10, 2011
8:40 pm

Miguel
detonacciones
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I am curating an art exhibit in Berkeley Springs WV Nov-Dec. 2011 (opening 11-11-11) and am in search of diverse artwork that resonates with the rare alignment...
1 Apr 5, 2011
1:26 pm

foresthrt
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http://troupesdad.com/rml3.html...
1 Feb 12, 2011
6:33 am

Vickie Gammill
vickiegammill
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greetings fellow Polytopians I cant seem to find it or remember what it was called, but someone here posted a table of all the polyhedron formulas such as the...
4 Jan 21, 2011
3:27 pm

cdsgraphics1952
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Hello, I have made a few short clips on the nature of three spheres interacting which you may find of use (for illustrative purposes) or interesting. ...
1 Nov 14, 2010
3:20 am

gnostradamus
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The video illustrating the geometry of the Tetraxis is now up on YouTube...here&#39;s the link: http://www.youtube.com/watch?v=WnkyOTtBij8 The video was created by...
5 Oct 22, 2010
3:22 am

Alan M
a.michelson
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Come visit my new Platonic Solids facebook page at: http://www.facebook.com/pages/PlatonicSolids/158392277523641...
1 Oct 2, 2010
12:56 am

danradin
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Back to the 12 around one associated with the cubeoctahedron..., I went to those sites, drawings. We must be presise in math and that is why all the terms....
5 Apr 24, 2010
1:34 pm

jennifer kurtz
jenniyoungkurtz
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Chemists Influence Stem-Cell Development With Geometry http://www.sciencedaily.com/releases/2010/03/100317162000.htm ...
3 Mar 18, 2010
11:31 pm

jenniyoungkurtz
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I've created six slide shows at Youtube featuring new classes of polyhedra, including: Exploded, Lattice, Open and Crown polyhedra. You can find them by typing...
2 Feb 2, 2010
12:19 am

jennifer kurtz
jenniyoungkurtz
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i think those icosahedral ornaments are very cool.  Here's a paper ornament I built about four years ago - a small stellated dodecahedron.  Paper, razor...
1 Dec 31, 2009
4:39 am

Burt Clawson
wildstar2002
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Wow! How about that! Little icosahedra <http://free-craft-downloads.com/> on your Christmas Tree! I bet that anyone can make the templates ...
3 Dec 31, 2009
12:38 am

Alan Michelson
a.michelson
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Hi everyone - I just thought I'd let you know I took my passion for designing patterns on triangular grids mapped across an icosahedral template, and I turned...
1 Dec 15, 2009
6:54 pm

FreeManInParis
mitchpowell2
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This fan page showcases a cool multi-dimensional construction toy which glows in the dark - http://www.facebook.com/astrologix . Can be used to build shapes...
3 Dec 12, 2009
1:26 pm

roopak vaidya
roopak.vaidya
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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. ...
1 Oct 15, 2009
4:51 am

Alan Michelson
a.michelson
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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...
1 Oct 14, 2009
1:19 pm

jjkostick
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I see what you mean: Here's a picture of a hyperbolic paraboloid within a tetrahedral wireframe; in other words, a skew quadrilateral. ... From:...
2 Oct 14, 2009
4:07 am

Alan Michelson
a.michelson
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