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Paolo Maffezioli
University of Barcelona
  1.  53
    Logic in Analytic Philosophy: A Quantitative Analysis.Guido Bonino, Paolo Maffezioli & Paolo Tripodi - 2020 - Synthese 198 (11):10991-11028.
    Using quantitative methods, we investigate the role of logic in analytic philosophy from 1941 to 2010. In particular, a corpus of five journals publishing analytic philosophy is assessed and evaluated against three main criteria: the presence of logic, its role and level of technical sophistication. The analysis reveals that logic is not present at all in nearly three-quarters of the corpus, the instrumental role of logic prevails over the non-instrumental ones, and the level of technical sophistication increases in time, although (...)
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  2. The Church–Fitch Knowability Paradox in the Light of Structural Proof Theory.Paolo Maffezioli, Alberto Naibo & Sara Negri - 2012 - Synthese 190 (14):2677-2716.
    Anti-realist epistemic conceptions of truth imply what is called the knowability principle: All truths are possibly known. The principle can be formalized in a bimodal propositional logic, with an alethic modality ${\diamondsuit}$ and an epistemic modality ${\mathcal{K}}$, by the axiom scheme ${A \supset \diamondsuit \mathcal{K} A}$. The use of classical logic and minimal assumptions about the two modalities lead to the paradoxical conclusion that all truths are known, ${A \supset \mathcal{K} A}$. A Gentzen-style reconstruction of the Church–Fitch paradox is presented (...)
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  3.  20
    Full Cut Elimination and Interpolation for Intuitionistic Logic with Existence Predicate.Paolo Maffezioli & Eugenio Orlandelli - 2019 - Bulletin of the Section of Logic 48 (2):137-158.
    In previous work by Baaz and Iemhoff, a Gentzen calculus for intuitionistic logic with existence predicate is presented that satisfies partial cut elimination and Craig's interpolation property; it is also conjectured that interpolation fails for the implication-free fragment. In this paper an equivalent calculus is introduced that satisfies full cut elimination and allows a direct proof of interpolation via Maehara's lemma. In this way, it is possible to obtain much simpler interpolants and to better understand and overcome the failure of (...)
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  4.  50
    Modular Sequent Calculi for Classical Modal Logics.David R. Gilbert & Paolo Maffezioli - 2015 - Studia Logica 103 (1):175-217.
    This paper develops sequent calculi for several classical modal logics. Utilizing a polymodal translation of the standard modal language, we are able to establish a base system for the minimal classical modal logic E from which we generate extensions in a modular manner. Our systems admit contraction and cut admissibility, and allow a systematic proof-search procedure of formal derivations.
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  5.  34
    Analytic Rules for Mereology.Paolo Maffezioli - 2016 - Studia Logica 104 (1):79-114.
    We present a sequent calculus for extensional mereology. It extends the classical first-order sequent calculus with identity by rules of inference corresponding to well-known mereological axioms. Structural rules, including cut, are admissible.
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  6.  4
    When Philosophy (of Science) Meets Formal Methods: A Citation Analysis of Early Approaches Between Research Fields.Guido Bonino, Paolo Maffezioli, Eugenio Petrovich & Paolo Tripodi - 2022 - Synthese 200 (2).
    The article investigates what happens when philosophy meets and begins to establish connections with two formal research methods such as game theory and network science. We use citation analysis to identify, among the articles published in Synthese and Philosophy of Science between 1985 and 2021, those that cite the specialistic literature in game theory and network science. Then, we investigate the structure of the two corpora thus identified by bibliographic coupling and divide them into clusters of related papers by automatic (...)
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  7.  71
    Intuitionistic Mereology.Paolo Maffezioli & Achille C. Varzi - 2021 - Synthese 198 (Suppl 18):4277-4302.
    Two mereological theories are presented based on a primitive apartness relation along with binary relations of mereological excess and weak excess, respectively. It is shown that both theories are acceptable from the standpoint of constructive reasoning while remaining faithful to the spirit of classical mereology. The two theories are then compared and assessed with regard to their extensional import.
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  8.  67
    Proof Theory of Epistemic Logic of Programs.Paolo Maffezioli & Alberto Naibo - 2014 - Logic and Logical Philosophy 23 (3):301--328.
    A combination of epistemic logic and dynamic logic of programs is presented. Although rich enough to formalize some simple game-theoretic scenarios, its axiomatization is problematic as it leads to the paradoxical conclusion that agents are omniscient. A cut-free labelled Gentzen-style proof system is then introduced where knowledge and action, as well as their combinations, are formulated as rules of inference, rather than axioms. This provides a logical framework for reasoning about games in a modular and systematic way, and to give (...)
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  9.  3
    Hume on the Monetary Fallacy of Monotonic Counterfactuals.Paolo Maffezioli - forthcoming - Axiomathes:1-14.
    I focus on the commonly shared view that Hume’s monetary theory is inconsistent. I review several attempts to solve the alleged inconsistency in Hume’s monetary theory, including the consensus interpretation according to which Hume was committed to the neutrality of money only in the long run, while he conceded that money can be non-neutral in the short run. Then, building on a monetary version of the logical fallacy of monotonic counterfactuals in the essay Of the Balance of Trade, I argue (...)
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  10.  21
    Bocheński's Formalization of Summa Theologiae (Ia,75,6) Reconsidered.Paolo Maffezioli - 2020 - History and Philosophy of Logic 41 (2):191-198.
    I investigate Bocheński's first-order logic formalization of the argument for the incorruptibility of the human soul given by Aquinas in Summa Theologiae (Ia,75,6). I suggest a slightly different axiomatization that reflect better Aquinas' informal argument. Along the way, I also fix a mistake in Bocheński's derivation that the human soul is not corruptible per se.
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  11.  17
    An Intuitionistic Logic for Preference Relations.Paolo Maffezioli & Alberto Naibo - 2019 - Logic Journal of the IGPL 27 (4):434-450.
    We investigate in intuitionistic first-order logic various principles of preference relations alternative to the standard ones based on the transitivity and completeness of weak preference. In particular, we suggest two ways in which completeness can be formulated while remaining faithful to the spirit of constructive reasoning, and we prove that the cotransitivity of the strict preference relation is a valid intuitionistic alternative to the transitivity of weak preference. Along the way, we also show that the acyclicity axiom is not finitely (...)
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  12.  15
    Interpolation in Extensions of First-Order Logic.Guido Gherardi, Paolo Maffezioli & Eugenio Orlandelli - 2020 - Studia Logica 108 (3):619-648.
    We prove a generalization of Maehara’s lemma to show that the extensions of classical and intuitionistic first-order logic with a special type of geometric axioms, called singular geometric axioms, have Craig’s interpolation property. As a corollary, we obtain a direct proof of interpolation for first-order logic with identity, as well as interpolation for several mathematical theories, including the theory of equivalence relations, partial and linear orders, and various intuitionistic order theories such as apartness and positive partial and linear orders.
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  13. Micromotives and Macrobehavior - Thomas Schellling. [REVIEW]Paolo Maffezioli - 2009 - Humana Mente 3 (10).
     
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  14.  11
    Sequents for Non-Wellfounded Mereology.Paolo Maffezioli - 2016 - Logic and Logical Philosophy 25 (3):351-369.
    The paper explores the proof theory of non-wellfounded mereology with binary fusions and provides a cut-free sequent calculus equivalent to the standard axiomatic system.
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