Subject-predicate calculus free from existential import

Studia Logica 42 (2-3):209 - 221 (1983)
Two subject-predicate calculi with equality,SP = and its extensionUSP =, are presented as systems of natural deduction. Both the calculi are systems of free logic. Their presentation is preceded by an intuitive motivation.It is shown that Aristotle's syllogistics without the laws of identitySaP andSiP is definable withinSP =, and that the first-order predicate logic is definable withinUSP =.
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DOI 10.1007/BF01063841
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References found in this work BETA
R. Routley (1966). Some Things Do Not Exist. Notre Dame Journal of Formal Logic 7 (3):251-276.
John Bacon (1967). Syllogistic Without Existence. Notre Dame Journal of Formal Logic 8 (3):195-219.

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