Thread: "=?UTF-8?Q?Cs=C3=A1sz=C3=A1r_and_Szilassi_polyhedra?="

From: Roice Nelson <roice3@gmail.com>
Date: Sat, 12 Dec 2015 17:14:50 -0600
Subject: =?UTF-8?Q?Cs=C3=A1sz=C3=A1r_and_Szilassi_polyhedra?=



--001a11c3462a5637290526bb9b08
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

Yesterday I learned about the Cs=C3=A1sz=C3=A1r polyhedron
on
Google+.

plus.google.com/u/0/+DavidJoyner/posts/HEBGDgqLgdG

It is the only known polyhedron besides the tetrahedron that has no
diagonals - all 7 vertices connect to every other. With 21 edges and 14
faces, its genus is 1. You can think of it as the complete graph
K_7 embedded on the torus.
It also has a dual, the Szilassi polyhedron
. Both relate to
the Heawood
graph .

Turns out I already had the latter configured in MagicTile (the {6,3}
7-Color), but I didn't have the former, so I just added it. Here are some
pictures of the tilings.

https://goo.gl/photos/K1vYapeTqqYteGx58
https://goo.gl/photos/kQMxQCtbCqsL2Wj88

Both are in the Euclidean/Torus section of MagicTile.

www.gravitation3d.com/magictile

Enjoy!
Roice

--001a11c3462a5637290526bb9b08
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

Yesterday I learned about the utilitycloset.com/2015/12/10/the-csaszar-polyhedron">Cs=C3=A1sz=C3=A1r poly=
hedron
=C2=A0on Google+. =C2=A0

://plus.google.com/u/0/+DavidJoyner/posts/HEBGDgqLgdG">plus.google.com/u/0/=
+DavidJoyner/posts/HEBGDgqLgdG


It is the o=
nly known polyhedron besides the tetrahedron that has no diagonals - all 7 =
vertices connect to every other.=C2=A0 With 21 edges and 14 faces, its genu=
s is 1.=C2=A0 You can think of it as the g/wiki/Complete_graph">complete graph K_7 embedded on the torus.=C2=A0 =
It also has a dual, the olyhedron">Szilassi polyhedron.=C2=A0 Both relate to the p://blogs.ams.org/visualinsight/2015/08/01/heawood-graph/">Heawood graph>.

Turns out I already had the latter configured i=
n MagicTile (the {6,3} 7-Color), but I didn't have the former, so I jus=
t added it.=C2=A0 Here are some pictures of the tilings.

v>
https://goo=
.gl/photos/K1vYapeTqqYteGx58
/kQMxQCtbCqsL2Wj88">https://goo.gl/photos/kQMxQCtbCqsL2Wj88
=

Both are in the Euclidean/Torus section of MagicTile.r>

le">www.gravitation3d.com/magictile

Enjoy!v>
Roice




--001a11c3462a5637290526bb9b08--





Return to MagicCube4D main page
Return to the Superliminal home page