Categorical Dualities for Some Two Categories of Lattices: An Extended Abstract

Wiesław Dziobiak; Marina Schwidefsky

doi:10.18778/0138-0680.2022.14

Authors

Wiesław Dziobiak University of Puerto Rico, Mayagüez Campus, 00681-9018, Mayagüez, Puerto Rico, USA
Marina Schwidefsky Sobolev Institute of Mathematics SB RAS, Laboratory of Logical Structures, 630090, Acad. Koptyug prosp. 4, Novosibirsk, Russia https://orcid.org/0000-0003-4804-8073

DOI:

https://doi.org/10.18778/0138-0680.2022.14

Keywords:

categorical duality, bi-algebraic lattice, bounded lattice, quasivariety lattice

Abstract

The categorical dualities presented are: (first) for the category of bi-algebraic lattices that belong to the variety generated by the smallest non-modular lattice with complete (0,1)-lattice homomorphisms as morphisms, and (second) for the category of non-trivial (0,1)-lattices belonging to the same variety with (0,1)-lattice homomorphisms as morphisms. Although the two categories coincide on their finite objects, the presented dualities essentially differ mostly but not only by the fact that the duality for the second category uses topology. Using the presented dualities and some known in the literature results we prove that the Q-lattice of any non-trivial variety of (0,1)-lattices is either a 2-element chain or is uncountable and non-distributive.

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