Johnson, Fred (Frederick A.), authorDepartment of Philosophical Studies, Southern Illinois University at Edwardsville, publisher2007-01-032007-01-031976-09Johnson, Frederick A., A Three-Valued Interpretation for a Relevance Logic, The Relevance Logic Newsletter 1, no. 3 (September 1976): 123-128.http://hdl.handle.net/10217/85941In this paper an entailment relation which holds between certain propositions of the propositional calculus will be defined both syntactically and semantically. Some theorems about this relation will show why one could not follow Lewis to prove that a contradiction entails, for the notion of entailment discussed below, every proposition.born digitalarticleseng©1976 Southern Illinois University at Edwardsville, Department of Philosophical Studies.Copyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.entailment relationText