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Original Usenet message from alt.ascii-art, 11 Jun 1997.
Re: HyperCube (Diamond Explained)

Re: HyperCube (Diamond Explained)

On Wed, 11 Jun 1997 18:48:45 +0100, salesman
<sal...@g-grids.demon.co.uk> wrote:

>>I think these figures are right (I never tried to counts edges and faces 
>>of a hypercube before!)
>>
>>                            Dimensions   Vertices   Edges   Faces
>>Point       0           1? 
>>Segment     1           2         1
>>Square      2           4         4       1
>>Cube        3           8        12       6
>>H-cube      4          16        30      18

Your explanations and drawings are quite good, but -sorry to tell you-
your figures are wrong

The tesseract, or hypercube, has
-4 dimensions,
-16 vertices -OK so far-,
- 32 edges, not 30 (not too hard to see; you have 12 edges in the cube
you begin with, another 12 edges in the cube you end with, and eight
edges connecting each vertex in the first cube with its homologue in
the second cube)
-24 faces, not 18 (again, 6 faces in cube 1 plus 6 faces in cube 2,
plus 12 faces connecting each edge of cube 1 with its homologue in
cube 2)
-and last but not least, 8 cubical "faces" (cube 1, cube 2, and 6
cubes connecting each face of cube 1 with its homologue in cube 2)

Original message headers
X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: f996b,aed89f7a2fcf37e8
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From: ecc...@delenda.est (Frank Newhouse)
Subject: Re: HyperCube (Diamond Explained)
Date: 1997/06/11
Message-ID: <339...@news.idecnet.com>#1/1
X-Deja-AN: 248218319
References: <339...@garnet.fsu.edu> <juo...@g-grids.demon.co.uk> <mar...@news.ricochet.net> <339...@garnet.fsu.edu> <z4p...@g-grids.demon.co.uk>
Organization: Unisource Espana NEWS SERVER
Newsgroups: alt.ascii-art
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