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23Inductive Plausibility and CertaintyIn Marcin Trepczyński (ed.), Philosophical Approaches to the Foundations of Logic and Mathematics: In Honor of Stanisław Krajewski, Brill | Rodopi. pp. 193-210. 2021.Is it possible to combine different logics into a coherent system with the goal of applying it to specific problems so that it sheds some light on foundational aspects of those logics? These are two of the most basic issues of combining logics. Paranormal modal logic is a combination of paraconsistent logic and modal logic. In this paper, I propose two further combinatory developments, focusing on each one of these two issues. On the foundational side, I combine paranormal modal logic with norma…Read more
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20An Inductive Modal Approach for the Logic of Epistemic InconsistencyAbstracta 6 (1): 136-155. 2010.The purpose of this paper is twofold. First we want to extent a specific paranormal modal logic in such a way as obtain a paraconsistent and paracomplete multimodal logic able to formalize the notions of plausibility and certainty. With this logic at hand, and this is our second purpose, we shall use a modified version of Reiter‘s default logic to build a sort of inductive logic of plausibility and certainty able to represent some basic principles of epistemic inductive reasoning, such as a nega…Read more
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19Logic and Religion: Special Issue of Logica Universalis (edited book)Springer. 2017.This special issue of Logica Universalis (Springer) deals with the relations between logic and religion, broadly conceived. It contains the following articles: Logic and Religion, by Jean-Yves Beziau and Ricardo Silvestre; Thinking Negation in Early Hinduism and Classical Indian Philosophy, by Purushottama Bilimoria; Karma Theory, Determinism, Fatalism and Freedom of Will, by Ricardo Sousa Silvestre; From Logic in Islam to Islamic Logic, by Musa Akrami; Leibniz’s Ontological Proof of the Existen…Read more
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16The Concept of God: Special Issue of the Journal of Applied Logics (edited book)College Publications. 2019.This special issue of the Journal of Applied Logics deals with the logical aspects of the concept of God. It contains the following articles: Logic and the Concept of God, by Stanisław Krajewski and Ricardo Silvestre; Mathematical Models in Theology. A Buber-inspired Model of God and its Application to “Shema Israel”, by Stanisław Krajewski; Gödel’s God-like Essence, by Talia Leven; A Logical Solution to the Paradox of the Stone, by Héctor Hernández Ortiz and Victor Cantero; No New Solutions to …Read more
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14O Que É Lógica Filosófica? Ou Em Que Sentido a Lógica É Filosófica?Dissertatio 57 246-276. 2023.Meu propósito aqui é jogar alguma luz sobre duas perguntas: “Em que sentido a lógica éfilosófica?” e “O que é lógica filosófica?”. Tomo essas duas questões como sendo coextensivas: umaresposta à uma delas é também (ou pode ser facilmente transformada em) uma resposta à outra.Tentarei trabalhar a partir de três perspectivas: uma perspectiva conceitual, uma descritiva e umaprescritiva. Sendo mais específico, tentarei responder às seguintes perguntas: (i) Em que sentido alógica pode ser tomada como…Read more
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14Induction and Confirmation Theory: An Approach based on a Paraconsistent Nonmonotonic LogicPrincípios 17 (28): 71-98. 2010.This paper is an effort to realize and explore the connections that exist between nonmonotonic logic and confirmation theory. We pick up one of the most wide-spread nonmonotonic formalisms – default logic – and analyze to what extent and under what adjustments it could work as a logic of induction in the philosophical sense. By making use of this analysis, we extend default logic so as to make it able to minimally perform the task of a logic of induction, having as a result a system which we b…Read more
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13Modality, Paraconsistency and ParacompletenessIn Marcus Kracht, Maarten de Rijke, Heinrich Wansing & Michael Zakharyaschev (eds.), Advances in Modal Logic, Csli Publications. pp. 449-467. 1998.
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13Filosofia e Teologia da Bhagavad-gita. Hinduísmo e o Vaishnavismo de Caitanya. Homenagem a Howard Resnick (edited book)Juruá. 2015.O propósito deste livro é preencher a lacuna existente no mercado editorial brasileiro no que diz respeito a obras de cunho acadêmico sobre hinduísmo e filosofia indiana. Essa lacuna se reflete, dentre outras, na inexistência de publicações em português que pretendam ir além do mero aspecto introdutório deste que é um dos maiores clássicos da literatura religiosa indiana e mundial: a Bhagavad-gita; também se reflete na inexistência de literatura especializada sobre as várias tradições indianas q…Read more
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12Sur l'aspect inférenciel de la logique des dialogues intelligentsDissertatio 30 249-268. 2009.O objetivo geral deste artigo é o de fazer algumas considerações teoréticas sobre o aspecto inferencial da Lógica dos Diálogos Inteligentes dentro do quadro conceitual fornecido pelas lógicas do senso comum desenvolvidas dentro da Inteligência Artificial. Mais especificamente, tentarei mostrar aqui que, para bem cumprir o seu papel, a LDI deve possuir uma maneira de representar as inferências não-monotônicas. Como argumento principal, defenderei a tese de que a não-monotonicidade é uma caracterí…Read more
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11On the logical formalization of theory change and scientific anomaliesLogic Journal of the IGPL 20 (2): 517-532. 2012.An investigation of what might be called the logical formalization of the process of theory change due to anomalies is presented. By anomaly, we mean an observed fact falling into the explanatory scope of a theory that does not agree with the theory prevision. A classical approach to restore the explicative power of a theory faced with an anomaly is to propose new, tentative auxiliary hypotheses which, along with part of the old set of auxiliary hypotheses, are able to solve the anomaly. After l…Read more
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10Ambiguidades Indutivas, Paraconsistência, Paracompletude E As Duas Abordagens Da InduçãoManuscrito 30 (1): 101-134. 2007.O objetivo desse artigo é realizar o que podemos chamar de uma análise conceitual da noção de indução, tomando como ponto de partida o problema das ambigüidades indutivas. Tentaremos mostrar que existe não apenas uma, mas duas maneiras igualmente autênticas de lidar com o problema das ambigüidades indutivas, e que quando certos aspec-tos lógicos dos dois conceitos de plausibilidade oriundos dessas duas abor-dagens da indução são considerados, muito da controvérsia a respeito das ambigüidades ind…Read more
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8Religion, Plurality and the Logic of the Concept of GodIn Vestrucci Andrea (ed.), Beyond Babel: Religion and Linguistic Pluralism, Springer Verlag. pp. 287-302. 2023.In this article, I address some higher-order issues involving the concept of God that arise within a pluralistic context: the problem of conceptual unity, the problem of unicity of extension and the problem of homogeneity/heterogeneity. My proposal to solve these questions involves a special hybrid theory of concepts, called the theory of ideal concepts. I argue that when associated with a pluralistic vision of concepts, and formalized within a possible world structure, such theory provides a sa…Read more
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IntroductionIn Ricardo Sousa Silvestre, Alan C. Herbert & Benedikt Paul Göcke (eds.), Vaiṣṇava concepts of god: philosophical perspectives, Routledge. 2023.
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Philosophical Logic = Philosophy + Logic?In J.-Y. Beziau, J.-P. Desclés, A. Moktefi & A. Pascau (eds.), Logic-in-Question (Workshop at the Sorbonne 2011-2019). pp. 299-327. 2021.My purpose in this paper is to shed some light on two questions: In what sense is logic philosophical? And what is philosophical logic? I take these two questions as co-extensive: an answer to one of them is also (or can easily be converted into) an answer to the other. I approach the problem from three perspectives: a conceptual, a descriptive and a prescriptive perspective. In other words, I try to answer the following questions: (i) In what sense can logic be taken as philosophical? (ii) In w…Read more
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Induction, conceived as the class of rational non-truth preserving inferences, has been a perennial problem in philosophy. Aside from the problem of justification of induction, a less debated issue is the problem of properly describing inductive inferences. The purpose of this book is to conceptually investigate this descriptive problem of induction from the standpoint of the nonmonotonic logical tradition raised inside the field of Artificial Intelligence in the last thirty years. As we try to …Read more
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On śaktis and their divine possessor: Towards a Gauḍīya Vaiṣṇava concept of GodIn Ricardo Sousa Silvestre, Alan C. Herbert & Benedikt Paul Göcke (eds.), Vaiṣṇava concepts of god: philosophical perspectives, Routledge. 2023.
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Logic of induction: a dead horse? some thoughts on the logical foundations of probabilityPrincípios 14 (22): 43-78. 2007.Sáo dois os propósitos deste artigo. Primeiro desejamos examinar porque o projeto de Carnap de construir uma lógica indutiva náo foi bem sucedido. De forma a realizar isso, nos apoiaremos na distinçáo entre o problema da justificaçáo da induçáo e o problema da descriçáo da induçáo. Tentaremos mostrar que a principal razáo pela qual o projeto de Carnap falhou foi sua relaçáo com o problema da justificaçáo da induçáo. Nosso segundo objetivo é propor algumas idéias de como seria um lógica da induçá…Read more
Ricardo Silvestre
Federal University of Campina Grande
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Federal University of Campina GrandeAssociate Professor
Areas of Specialization
Philosophy of Religion |
Logic and Philosophy of Logic |
Metaphysics and Epistemology |