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Boolean Algebras with an Automorphism Group: a Framework for Lukasiewicz Logic
Thomas Vetterlein

We introduce a framework within which reasoning according to Lukasiewicz logic can be represented. We consider a separable Boolean algebra B endowed with a (certain type of) group G of automorphisms; the pair (B , G) will be called a Boolean ambiguity algebra. B is meant to model a system of crisp properties; G is meant to express uncertainty about these properties. We define fuzzy propositions as subsets of B which are, most importantly, closed under the action of G. By defining a conjunction and implication for pairs of fuzzy propositions in an appropriate manner, we are led to the algebraic structure characteristic for Lukasiewicz logic.

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