An algebraic study of well-foundedness

Studia Logica 44 (4):423 - 437 (1985)
A foundational algebra ( , f, ) consists of a hemimorphism f on a Boolean algebra with a greatest solution to the condition f(x). The quasi-variety of foundational algebras has a decidable equational theory, and generates the same variety as the complex algebras of structures (X, R), where f is given by R-images and is the non-wellfounded part of binary relation R.The corresponding results hold for algebras satisfying =0, with respect to complex algebras of wellfounded binary relations. These algebras, however, generate the variety of all ( ,f) with f a hemimorphism on ).
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DOI 10.1007/BF00370431
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References found in this work BETA
E. J. Lemmon (1966). Algebraic Semantics for Modal Logics I. Journal of Symbolic Logic 31 (1):46-65.
E. J. Lemmon (1966). Algebraic Semantics for Modal Logics II. Journal of Symbolic Logic 31 (2):191-218.

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