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FOCS
2003
IEEE
15 years 8 months ago
The Complexity of Homomorphism and Constraint Satisfaction Problems Seen from the Other Side
We give a complexity theoretic classification of homomorphism problems for graphs and, more generally, relational structures obtained by restricting the left hand side structure ...
Martin Grohe
COCO
2003
Springer
93views Algorithms» more  COCO 2003»
15 years 8 months ago
The complexity of stochastic sequences
We review and slightly strengthen known results on the Kolmogorov complexity of prefixes of effectively random sequences. First, there are recursively random random sequences su...
Wolfgang Merkle
CORR
2007
Springer
98views Education» more  CORR 2007»
15 years 3 months ago
Signal Set Design for Full-Diversity Low-Decoding-Complexity Differential Scaled-Unitary STBCs
— The problem of designing high rate, full diversity noncoherent space-time block codes (STBCs) with low encoding and decoding complexity is addressed. First, the notion of g-gro...
G. Susinder Rajan, B. Sundar Rajan
STACS
2000
Springer
15 years 6 months ago
The Complexity of Planarity Testing
We clarify the computational complexity of planarity testing, by showing that planarity testing is hard for L, and lies in SL. This nearly settles the question, since it is widely...
Eric Allender, Meena Mahajan
COMPGEOM
2008
ACM
15 years 5 months ago
Delpsc: a delaunay mesher for piecewise smooth complexes
This video presents the working of a new algorithm/software called DelPSC that meshes piecewise smooth complexes in three dimensions with Delaunay simplices. Piecewise smooth comp...
Tamal K. Dey, Joshua A. Levine