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DCG
2008
13 years 7 months ago
2008
We construct a dense packing of regular tetrahedra, with packing density D > .7786157. Keywords Crystallography
DCG
2006
13 years 7 months ago
2006
This paper presents an algorithm to compute the value of the inverse Laplace transforms of rational functions with poles on arrangements of hyperplanes. As an application, we prese...
DCG
2006
13 years 7 months ago
2006
We prove that four spheres in R3 have infinitely many real common tangents if and only if they have aligned centers and at least one real common tangent.
DCG
2006
13 years 7 months ago
2006
It is proved that a triangulation of a polyhedron can always be transformed into any other triangulation of the polyhedron using only elementary moves. One consequence is that an ...
DCG
2007
13 years 7 months ago
2007
The GIT chamber decomposition arising from a subtorus action on a polarized quasiprojective toric variety is a polyhedral complex. Denote by Σ the fan that is the cone over the po...