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EJC
2006
15 years 6 months ago
The topology of the independence complex
We introduce a large self-dual class of simplicial complexes for which we show that each member complex is contractible or homotopy equivalent to a sphere. Examples of complexes i...
Richard Ehrenborg, Gábor Hetyei
TIT
2008
84views more  TIT 2008»
15 years 6 months ago
Bounds for Codes in Products of Spaces, Grassmann, and Stiefel Manifolds
Upper bounds are derived for codes in Stiefel and Grassmann manifolds with given minimum chordal distance. They stem from upper bounds for codes in the product of unit spheres and...
Christine Bachoc, Yael Ben-Haim, Simon Litsyn
JGTOOLS
2007
157views more  JGTOOLS 2007»
15 years 6 months ago
Continuous Cube Mapping
Existing environment mapping techniques include spherical mapping and cube mapping. These techniques have inherent flaws that cause sampling issues and aliasing. Continuous cube ...
Cindy M. Grimm, Bill Niebruegge
CORR
2002
Springer
109views Education» more  CORR 2002»
15 years 6 months ago
Sufficiently Fat Polyhedra are not 2-castable
In this note we consider the problem of manufacturing a convex polyhedral object via casting. We consider a generalization of the sand casting process where the object is manufact...
David Bremner, Alexander Golynski
DCC
2007
IEEE
16 years 5 months ago
Low-density attack revisited
The low-density attack proposed by Lagarias and Odlyzko is a powerful algorithm against the subset sum problem. The improvement algorithm due to Coster et al. would solve almost a...
Tetsuya Izu, Jun Kogure, Takeshi Koshiba, Takeshi ...