Associative polynomial functions over bounded distributive lattices

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Couceiro, Miguel
Marichal, Jean-Luc
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Abstract
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The associativity property, usually defined for binary functions, can be generalized to functions of a given fixed arity n>=1 as well as to functions of multiple arities. In this paper, we investigate these two generalizations in the case of polynomial functions over bounded distributive lattices and present explicit descriptions of the corresponding associative functions. We also show that, in this case, both generalizations of associativity are essentially the same.
Comment: Final version
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Mathematics - Rings and Algebras, Mathematics - Combinatorics, 28B15, 39B72 (Primary) 06D05 (Secondary)
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