protothetic

logic

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In Stanisław Leśniewski: Major work in logic
…derived from the Greek, of protothetic, ontology, and mereology (q.v.). The logical basis of the whole theory, and hence its name (prōtos, “first”), is provided by protothetic, which is the most comprehensive theory yet developed of the relations between propositions. The other two systems are based on a distinction the…
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