Classes of operations closed under permutation, cylindrification and composition
Couceiro, Miguel; Lehtonen, Erkko
Proceedings of the 40th IEEE International Symposium on Multiple-Valued Logic (ISMVL 2010), IEEE Computer Society, Los Alamitos, (2010), 117-121
http://dx.doi.org/10.1109/ISMVL.2010.30
We describe the classes of operations closed under permutation of variables, addition of dummy variables and composition in terms of a preservation relation between operations and certain systems of multisets.
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