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Diagrammatic Algebra of First Order Logic (2401.07055v1)
Published 13 Jan 2024 in cs.LO and math.CT
Abstract: We introduce the calculus of neo-Peircean relations, a string diagrammatic extension of the calculus of binary relations that has the same expressivity as first order logic and comes with a complete axiomatisation. The axioms are obtained by combining two well known categorical structures: cartesian and linear bicategories.