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"Iff" is not expressible in independence-friendly logic - MaRDI portal

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"Iff" is not expressible in independence-friendly logic

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Publication:6210080

arXiv0806.4785MaRDI QIDQ6210080

Author name not available (Why is that?)

Publication date: 29 June 2008

Abstract: Ordinary first-order logic has the property that two formulas phi and psi have the same meaning in a structure if and only if the formula ``phi iff psi is true in the structure. We prove that independence-friendly logic does not have this property.











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