The Logic of Pragmatic Truth

Journal of Philosophical Logic 27 (6):603-620 (1998)
The mathematical concept of pragmatic truth, first introduced in Mikenberg, da Costa and Chuaqui (1986), has received in the last few years several applications in logic and the philosophy of science. In this paper, we study the logic of pragmatic truth, and show that there are important connections between this logic, modal logic and, in particular, Jaskowski's discussive logic. In order to do so, two systems are put forward so that the notions of pragmatic validity and pragmatic truth can be accommodated. One of the main results of this paper is that the logic of pragmatic truth is paraconsistent. The philosophical import of this result, which justifies the application of pragmatic truth to inconsistent settings, is also discussed
Keywords Jaskowski's logic  modal logic  paraconsistent logic  partial structures  pragmatic truth  quasi-truth
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DOI 10.1023/A:1004304228785
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O. Bueno (1997). Empirical Adequacy: A Partial Structures Approach. Studies in History and Philosophy of Science Part A 28 (4):585-610.
M. Bryson Brown & Graham Priest (2015). Chunk and Permeate II: Bohr’s Hydrogen Atom. European Journal for Philosophy of Science 5 (3):297-314.
O. Bueno (2000). Empiricism, Scientific Change and Mathematical Change. Studies in History and Philosophy of Science Part A 31 (2):269-296.

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