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Electronic Colloquium on Computational Complexity

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REPORTS > KEYWORD > STRUCTURE HOMOMORPHISM:
Reports tagged with structure homomorphism:
TR06-021 | 10th February 2006
Tomas Feder

Constraint satisfaction: a personal perspective

Attempts at classifying computational problems as polynomial time
solvable, NP-complete, or belonging to a higher level in the polynomial
hierarchy, face the difficulty of undecidability. These classes, including
NP, admit a logic formulation. By suitably restricting the formulation, one
finds the logic class MMSNP, or monotone monadic strict NP without
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