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» Enumerating Homomorphisms
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IJCM
2008
102views more  IJCM 2008»
13 years 11 months ago
Combinatorial method in the coset enumeration of symmetrically generated groups
We give an algorithm for enumerating cosets of a group defined as a finite homomorphic image of a semi-direct product of free products of cyclic groups by a group of monomial auto...
Mohamed Sayed
STACS
2009
Springer
14 years 5 months ago
Enumerating Homomorphisms
The homomorphism problem for relational structures is an abstract way of formulating constraint satisfaction problems (CSP) and various problems in database theory. The decision ve...
Andrei A. Bulatov, Víctor Dalmau, Martin Gr...
ATAL
2010
Springer
14 years 4 hour ago
Pure Nash equilibria: complete characterization of hard and easy graphical games
We consider the computational complexity of pure Nash equilibria in graphical games. It is known that the problem is NP-complete in general, but tractable (i.e., in P) for special...
Albert Xin Jiang, MohammadAli Safari
FOCS
2007
IEEE
14 years 5 months ago
Can you beat treewidth?
: It is well-known that constraint satisfaction problems (CSP) over an unbounded domain can be solved in time nO(k) if the treewidth of the primal graph of the instance is at most ...
Dániel Marx