1 Feb
2004
1 Feb
'04
3:24 p.m.
The triangular numbers are 1,3,6,10,... * * * * * * * * * * If you stack these triangles, you get a tetrahedron. ----- Original Message Follows -----
On Fri, Jan 30, 2004 at 05:17:01PM -0500, asimovd@aol.com
wrote: Let A_n denote a regular tetrahedral arrangement of points in 3-space, n to an edge. (The layers successively contain 1, 3, 6,... points.)
Can you be more explicit what this arrangement is? I am completely baffled.
Peace, Dylan
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-- Mike Stay staym@clear.net.nz http://www.cs.auckland.ac.nz/~msta039