373 reputation
27
bio website
location
age
visits member for 3 years, 3 months
seen Oct 3 '11 at 21:25

Aug
23
awarded  Necromancer
May
20
awarded  Yearling
May
20
awarded  Nice Answer
Feb
17
awarded  Tag Editor
Oct
3
awarded  Scholar
Oct
3
comment 3D picture of the 38-sided Engel space-filling polyhedron
I'm familiar with these pictures, but I'll accept them. I'd really like to get a 3D version of the packing.
Oct
3
accepted 3D picture of the 38-sided Engel space-filling polyhedron
Oct
3
awarded  Nice Question
Jul
7
comment Space-filling polyhedra (or honeycomb) survey?
In 2D, for n-gons 3-6, there are 1,1,14,3 families of tiling polygons, according to Grunbaum. In 3D, 3-12, there are 5,?,27,56,49,?,?,40,16 types of space-filling polyhedra, according to MathWorld. For example, there are 5 spacefilling tetrahedra.
Jul
7
comment 3D picture of the 38-sided Engel space-filling polyhedron
I'm hoping to find something suitable for looking at the 3D graphics of it, including a manipulative 3D object of an Engel38 surrounded by 38 others. I'm also hoping to do 3D printing of it at Shapeways. Grunbaum lists coordinates for the other polyhedra, but not for this one.
Jul
6
comment Space-filling polyhedra (or honeycomb) survey?
Yep. Is that number 27 still reliable? From the later papers, it seems Goldberg missed a lot. Is there data solid enough to support an integer sequence for OEIS?
Jul
6
asked Space-filling polyhedra (or honeycomb) survey?
Jul
6
comment 3D picture of the 38-sided Engel space-filling polyhedron
The schematic drawing is in Engel's book as well, and many other places. Can you turn this schematic into a working 3D image?
Jul
6
asked 3D picture of the 38-sided Engel space-filling polyhedron
Jul
5
answered What is the highest number that can be got from 4383 by moving exactly 2 matches?
Jun
9
revised symbolic-computation wiki excerpt
added 302 characters in body
Jun
9
suggested suggested edit on symbolic-computation tag wiki excerpt
Jun
9
wiki created symbolic-computation excerpt
Jun
9
answered Dissecting a square into congruent pieces that all touch the centre
Jun
9
awarded  Supporter