Topology and adjunction in promise constraint satisfaction

The approximate graph coloring problem, whose complexity is unresolved in most cases, concerns finding a c-coloring of a graph that is promised to be k-colorable, where c≥k. This problem naturally generalizes to promise graph homomorphism problems and further to promise constraint satisfaction probl...

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Bibliographic Details
Main Authors: Krokhin, A, Oprsal, J, Wrochna, M, Zivny, S
Format: Journal article
Language:English
Published: Society for Industrial and Applied Mathematics 2023