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GL-Quantales: Q-Valued Sets and Their Singletons

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Q-valued sets are non-classical models of the formalized theory of identity with existence predicate based on the axioms of a non-commutative and non-idempotent logic. The singleton monad on the category of Q-valued sets is constructed, and elementary properties of T-algebras of the singleton monad are investigated.

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Höhle, U. GL-Quantales: Q-Valued Sets and Their Singletons. Studia Logica 61, 123–148 (1998). https://doi.org/10.1023/A:1005038532285

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