Abstract
Category theory is often treated as an algebraic foundation for mathematics, and the widely known algebraization of ZF set theory in terms of this discipline is referenced as “categorical set theory” or “set theory for category theory”. The method of algebraization used in this theory has not been formulated in terms of universal algebra so far. In current paper, a universal algebraic method, i.e. one formulated in terms of universal algebra, is presented and used for algebraization of a ground mereological system described as “quantitative” (QMS) and of the standard set theories built upon it. The QMS is algebraized by using abelian generalized groups (AGGs) generalizing both abelian groups and Boolean algebras. To algebraize set theory, the AGG are enriched with operators to produce extensional algebras (EA) of Tarskian “Boolean algebras with operators” type. EAs explicate the intuition of set theory’ universes (of discourse). The axiomatic set theory presented in this paper, named extension theory, previously went through an intuitive phase of development during its use by the author in computer science projects, where it served as the basis for development of a foundational data science framework and an extensional model of natural languages also outlined here.
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Drugus, I. A Universal Algebraic Set Theory Built on Mereology with Applications. Log. Univers. 16, 253–283 (2022). https://doi.org/10.1007/s11787-022-00295-8
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DOI: https://doi.org/10.1007/s11787-022-00295-8