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Displaying similar documents to “Subdirectly irreducible decomposition of some algebras having the semilattice structure”

A note on cylindric lattices

Ivo Düntsch (1993)

Banach Center Publications

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0. Introduction. Besides being of intrinsic interest, cylindric (semi-) lattices arise naturally from the study of dependencies in relational databases; the polynomials on a cylindric semilattice are closely related to the queries obtainable from project-join mappings on a relational database (cf. [D] for references). This note is intended to initiate the study of these structures, and only a few, rather basic results will be given. Some problems at the end will hopefully stimulate further...