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  1. JUNE 2015 UPDATE: A BIBLIOGRAPHY: JOHN CORCORAN's PUBLICATIONS ON ARISTOTLE 1972–2015.John Corcoran - manuscript
    JUNE 2015 UPDATE: A BIBLIOGRAPHY: JOHN CORCORAN’S PUBLICATIONS ON ARISTOTLE 1972–2015 By John Corcoran -/- This presentation includes a complete bibliography of John Corcoran’s publications relevant to his research on Aristotle’s logic. Sections I, II, III, and IV list 21 articles, 44 abstracts, 3 books, and 11 reviews. It starts with two watershed articles published in 1972: the Philosophy & Phenomenological Research article from Corcoran’s Philadelphia period that antedates his Aristotle studies and the Journal of Symbolic Logic article from his (...)
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  2. A Dialogue with I ! حوار مع أنا.Salah Osman - manuscript
    هل يمكن إذن أن أكون أنا لست أنا بانطباعات الزمان على جسدي وفكري؟ أليس لي جوهرٌ ثابتٌ تتبدل عليه الأعراض من حين إلى آخر، ومن ثم لا أفقد هويتي الحقيقية؟ لقد وُلدت منذ سنوات خلت، وتعلمت وعلمت أنني هو أنا، ويعلم المحيطون بي أنني هو أنا، بل يستطيع العلم المعاصر أن يُثبت أن لي تركيبًا جينيًا وراثيًا يميزني عن غيري، وأن لي بصمات أصابع وبصمة صوت لا تتطابق مع بصمات غيري، وسيحاسبني ربي يوم العرض عليه بوصفي شخصًا واحدًا هو أنا؛ (...)
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  3. Probability Semantics for Aristotelian Syllogisms.Niki Pfeifer & Giuseppe Sanfilippo - manuscript
    We present a coherence-based probability semantics for (categorical) Aristotelian syllogisms. For framing the Aristotelian syllogisms as probabilistic inferences, we interpret basic syllogistic sentence types A, E, I, O by suitable precise and imprecise conditional probability assessments. Then, we define validity of probabilistic inferences and probabilistic notions of the existential import which is required, for the validity of the syllogisms. Based on a generalization of de Finetti's fundamental theorem to conditional probability, we investigate the coherent probability propagation rules of argument forms (...)
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  4. How We Naturally Reason.Fred Sommers - manuscript
    In the 17th century, Hobbes stated that we reason by addition and subtraction. Historians of logic note that Hobbes thought of reasoning as “a ‘species of computation’” but point out that “his writing contains in fact no attempt to work out such a project.” Though Leibniz mentions the plus/minus character of the positive and negative copulas, neither he nor Hobbes say anything about a plus/minus character of other common logical words that drive our deductive judgments, words like ‘some’, ‘all’, ‘if’, (...)
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  5. Are Information, Cognition and the Principle of Existence Intrinsically Structured in the Quantum Model of Reality?Elio Conte - forthcoming - Open Systems and Information Dynamics.
    The thesis of this paper is that Information, Cognition and a Principle of Existence are intrinsically structured in the quantum model of reality. We reach such evidence by using the Clifford algebra. We analyze quantization in some traditional cases of quantum mechanics and, in particular in quantum harmonic oscillator, orbital angular momentum and hydrogen atom.
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  6. Aristotle on the Individuation of Syllogisms.Phil Corkum - forthcoming - Ancient Philosophy.
    Discussion of the Aristotelian syllogistic over the last sixty years has arguably centered on the question whether syllogisms are inferences or implications. But the significance of this debate at times has been taken to concern whether the syllogistic is a logic or a theory, and how it ought to be represented by modern systems. Largely missing from this discussion has been a study of the few passages in the Prior Analytics where Aristotle provides explicit guidance on how to individuate syllogisms. (...)
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  7. Is Aristotle's Syllogistic a Logic?Phil Corkum - forthcoming - History and Philosophy of Logic.
    Much of the last fifty years of scholarship on Aristotle’s syllogistic suggests a conceptual framework under which the syllogistic is a logic, a system of inferential reasoning, only if it is not a theory or formal ontology, a system concerned with general features of the world. In this paper, I will argue that this a misleading interpretative framework. The syllogistic is something sui generis: by our lights, it is neither clearly a logic, nor clearly a theory, but rather exhibits certain (...)
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  8. A Mereological Reading of the Dictum de Omni et Nullo.Phil Corkum - forthcoming - Archiv für Geschichte der Philosophie.
    When Aristotle introduces the perfect moods, he refers back to the dictum de omni et nullo, a semantic condition for universal affirmations and negations. There recently has been renewed interest in the question whether the dictum validates the assertoric syllogistic. I rehearse evidence that Aristotle provides a mereological semantics for universal affirmations and negations, and note that this semantics entails a nonstandard reading of the dictum, under which the dictum, in the presence of a minimal logical apparatus, indeed validates the (...)
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  9. Aristotle on Logical Consequence.Phil Corkum - forthcoming - British Journal for the History of Philosophy.
    Compare two conceptions of validity: under an example of a modal conception, an argument is valid just in case it is impossible for the premises to be true and the conclusion false; under an example of a topic-neutral conception, an argument is valid just in case there are no arguments of the same logical form with true premises and a false conclusion. This taxonomy of positions suggests a project in the philosophy of logic: the reductive analysis of the modal conception (...)
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  10. Kilwardby's 55th Lesson.Wolfgang Lenzen - forthcoming - Logic and Logical Philosophy:1.
    In “Lectio 55” of his Notule libri Priorum, Robert Kilwardby discussed various objections that had been raised against Aristotle’s Theses. The first thesis, AT1, says that no proposition q is implied both by a proposition p and by its negation, ∼p. AT2 says that no proposition p is implied by its own negation. In Prior Analytics, Aristotle had shown that AT2 entails AT1, and he argued that the assumption of a proposition p such that (∼p → p) would be “absurd”. (...)
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  11. Gersonides and Spinoza on God’s Knowledge of Universals and Particulars.Yitzhak Melamed - forthcoming - In Gad Freudenthal, David Wirmer & Ofer Elior (eds.), Gersonides Through the Ages.
  12. The Real Distinction between Supposit and Nature in Angels in Thomas Aquinas.Elliot Polsky - forthcoming - Proceedings of the American Catholic Philosophical Association.
    It is universally acknowledged that, for St. Thomas, there is a distinction between human persons or supposits and their natures or essences. But it is usually thought that there is no parallel distinction between the angelic person or supposit and its nature. Yet, as this paper argues, Aquinas consistently puts forward just such a distinction. This paper surveys Aquinas’s arguments for the unique identity of God with his essence and the corresponding distinctions between created persons and their essences, showing in (...)
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  13. How to Defend the Law of Non-Contradiction without Incurring the Dialetheist’s Charge of (Viciously) Begging the Question.Marco Simionato - 2024 - Organon F: Medzinárodný Časopis Pre Analytickú Filozofiu 31 (2):141-182.
    According to some critics, Aristotle’s elenctic defence (elenchos, elenchus) of the Law of Non-Contradiction (Metaphysics IV) would be ineffective because it viciously begs the question. After briefly recalling the elenctic refutation of the denier of the Law of Non-Contradiction, I will first focus on Filippo Costantini’s objection to the elenchus, which, in turn, is based on the dialetheic account of negation developed by Graham Priest. Then, I will argue that there is at least one reading of the elenchus that might (...)
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  14. Johannes Rudbeckius och logik: Gestaltning av en luthersk skolastik.Tero Tulenheimo - 2024 - Skellefteå: Artos & Norma bokförlag.
    Johannes Rudbeckius (1581–1646) var en av de främsta kyrkoledarna i stormaktstidens Sverige. Under studietiden i Wittenberg influerades han av ”luthersk skolastik”, enligt vilken förnuft och uppenbarelse är förenliga som kunskapskällor och logik är ett instrument för teologi. -/- I boken visar Tero Tulenheimo hur Rudbeckius lade vikt vid logik som stöddisciplin för teologi. -/- Inledningsvis behandlas frågan om omfattningen av Rudbeckius teologiska produktion. Här argumenterar Tulenheimo emot Bengt Hägglunds tes, enligt vilken Rudbeckius skulle ha författat en viktig opublicerad handskrift om (...)
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  15. Self-examination, Understanding, Transmission: On Becoming a Teacher in Clauberg’s Logica vetus et nova.Adi Efal-Lautenschläger - 2023 - In Andrea Strazzoni & Marco Sgarbi (eds.), Reading Descartes. Consciousness, Body, and Reasoning. Florence: Firenze University Press. pp. 101-128.
    This paper takes a fresh look at Johannes Clauberg’s Logica vetus et nova, in order to try to clarify its nature and character. Differently from prior readings of Clauberg that analyze his philosophy from the point of view of the construction of ‘ontology’, the approach of the present paper sees in Clauberg’s philosophy a late-Humanist work, accentuating his pedagogic and hermeneutical interests. Indeed, in Clauberg’s philosophy, hermeneutics and pedagogy are intrinsically bound together. This, the paper suggests, is supported not only (...)
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  16. Qui imperitus est vestrum, primus calculum omittat. Aristotelis sophistici elenchi 1 in the Boethian Tradition.Leone Gazziero - 2023 - Ad Argumenta 4:75-118.
    The prologue of the Sophistici elenchi is as close an Aristotelian text gets to dealing with language as a subject matter in its own right, only in reverse. Language and its features bear consideration to the extent that they account for some major predicaments discursive reasoning is prone to, both as a separate and as a common endeavour. That being said, the linguistic pitfalls that trick us into thinking that whatever is the case for words and word-compounds is also the (...)
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  17. Yamauchi Tokuryū (1890-1982). Philosophie occidentale et pensée bouddhique.Romaric Jannel - 2023 - Paris: Éditions Kimé.
    Philosophe japonais polyglotte au savoir encyclopédique, Yamauchi Tokuryū est à n’en point douter l’un des auteurs les moins étudiés de l’école de Kyōto. La présente étude vient corriger ce qui ne constitue rien d’autre qu’un accident de l’histoire, tant l’ampleur du projet philosophique de Yamauchi est à même de susciter l’intérêt du philosophe, du savant et de l’amateur cultivé. La démarche de ce penseur japonais, disciple de Nishida Kitarō, est remarquable en ce qu’il chercha à proposer un dépassement englobant de (...)
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  18. What can anyone say so far on the Peirce-CJC relation?Robert Junqueira - 2023 - Divyadaan: Journal of Philosophy and Education 34 (2):191-222.
    Charles S. Peirce (†1914) is often referred to as the founder of contemporary semiotics. Peirce provided the community of inquiry with a very convincing explanation of what a sign is. Peirce's definition of the sign bears a striking resemblance to that proposed in the 1606 volume of the CJC, the Coimbra Jesuit Course, authored by Sebastião do Couto (†1639). The community of inquiry holds the belief that Peirce drew from the writings of Couto to arrive at his triadic conception of (...)
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  19. Review: Aristotle’s Syllogistic Underlying Logic: His Model with His Proofs of Soundness and Completeness. [REVIEW]C. G. King - 2023 - History and Philosophy of Logic (4):1–3.
    This book presents a (new) attempt to apply the notion of an underlying logic to Aristotle’s Organon and certain passages of the Metaphysics. The author situates his approach as part of a ‘deductio...
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  20. Fichte’s Formal Logic.Jens Lemanski & Andrew Schumann - 2023 - Synthese 202 (1):1-27.
    Fichte’s Foundations of the Entire Wissenschaftslehre 1794 is one of the most fundamental books in classical German philosophy. The use of laws of thought to establish foundational principles of transcendental philosophy was groundbreaking in the late eighteenth and early nineteenth century and is still crucial for many areas of theoretical philosophy and logic in general today. Nevertheless, contemporaries have already noted that Fichte’s derivation of foundational principles from the law of identity is problematic, since Fichte lacked the tools to correctly (...)
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  21. Preface.Zuzana Rybaříková & Martina číhalová - 2023 - Organon F: Medzinárodný Časopis Pre Analytickú Filozofiu 30 (1):2-4.
  22. An Axiomatic System Based on Ladd-Franklin's Antilogism.Fangzhou Xu - 2023 - History and Philosophy of Logic 45 (3):302-322.
    This paper sketches the antilogism of Christine Ladd-Franklin and historical advancement about antilogism, mainly constructs an axiomatic system Atl based on first-order logic with equality and the wholly-exclusion and not-wholly-exclusion relations abstracted from the algebra of Ladd-Franklin, with soundness and completeness of Atl proved, providing a simple and convenient tool on syllogistic reasoning. Atl depicts the empty class and the whole class differently from normal set theories, e.g. ZFC, revealing another perspective on sets and set theories. Two series of Dotterer (...)
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  23. John Dumbleton on Insolubles: An Edition of an Epitome of His Solution to Insolubles.Barbara Bartocci & Stephen Read - 2022 - Noctua 9 (3):48-88.
    This paper provides a philosophical analysis and a new edition of an anonymous Epitome of John Dumbleton’s solution to the semantic paradoxes. The first part of this paper briefly presents Dumbleton’s cassationist solution to the semantic paradoxes, which the English philosopher proposes in his Summa Logicae, written in the 1330s–40s. The second part investigates the solution to various types of insolubles proposed by the anonymous author of the Epitome. The third part provides a new critical edition of the Latin text (...)
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  24. The Exoteric Square of Opposition.Jean-Yves Beziau & Ioannis Vandoulakis (eds.) - 2022 - Birkhauser.
    The theory of the square of opposition has been studied for over 2,000 years and has seen a resurgence in new theories and research since the second half of the twentieth century. This volume collects papers presented at the Sixth World Congress on the Square of Opposition, held in Crete in 2018, developing an interdisciplinary exploration of the theory. Chapter authors explore subjects such as Aristotle’s ontological square, logical oppositions in Avicenna’s hypothetical logic, and the power of the square of (...)
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  25. Medieval Theories on the Conceivability of the Impossible: A Survey of Impossible Positio in Ars Obligatoria during the 13th–14th Centuries.Irene Binini - 2022 - Noctua 9 (3):1-47.
    During the 13th century, several logicians in the Latin medieval tradition showed a special interest in the nature of impossibility, and in the different kinds or ‘degrees’ of impossibility that could be distinguished. This discussion resulted in an analysis of the modal concept with a fineness of grain unprecedented in earlier modal accounts. Of the several divisions of the term ‘impossible’ that were offered, one became particularly relevant in connection with the debate on ars obligatoria and positio impossibilis: the distinction (...)
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  26. Book Review of Islamic Thought Through Protestant Eyes. [REVIEW]Jeremy Fradkin - 2022 - Global Intellectual History 7 (November 2022).
    In this fascinating book, Mehmet Karabela reveals the many roles assigned to Islam, Islamic history, the Ottoman Empire, Turks and Arabs by northern European Protestant intellectuals, mostly German Lutherans, from 1650 to 1800. The texts cover many topics that famously captivated European thinkers during a period which Karabela elects to call post-Reformation rather than Enlightenment. There are comparative studies of religion, philosophy, and literature. Karabela’s introduction provides a robust review of the historiography and offers context for patterns that emerge from (...)
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  27. Epistemic Sophisms, Calculatores and John Mair’s Circle.Miroslav Hanke - 2022 - Noctua 9 (3):89-131.
    This paper focuses on the early sixteenth-century epistemic logic developed by John Mair’s circle and discusses iterated epistemic modalities, epistemic closure and Bradwardinian semantics related to the logic of epistemic statements. These topics are addressed as part of setting up and solving epistemic sophisms based on traditional scenarios which can be traced back to fourteenth-century British epistemic logic. While the ultimate source for the debate appears to be the second chapter of William Heytesbury’s Regule solvendi sophismata, the immediate source is (...)
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  28. Analysis in Prior Analytics I.45.Igor Martinjak - 2022 - History and Philosophy of Logic 43 (3):207-231.
    I reconstruct Aristotle’s analytical procedure in Prior Analytics I.45 and its metalogical implications. Aristotle’s analysis unfolds three groups of syllogisms: symmetrically analysable, asymmetrically analysable, and non-analysable syllogisms. From the first and the third group could be extracted 27 combinations of the two mutually non-derivable deductive rules. Aristotle’s reduced deductive system in APr. I.7 with the two moods in the first figure (traditionally called Barbara and Celarent) follows this pattern. I demonstrate that the deductive system with Barbara and Celarent is just (...)
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  29. A Logic for Aristotle's Modal Syllogistic.Clarence Lewis Protin - 2022 - History and Philosophy of Logic (3).
    We propose a new modal logic endowed with a simple deductive system to interpret Aristotle's theory of the modal syllogism. While being inspired by standard propositional modal logic, it is also a logic of terms that admits a (sound) extensional semantics involving possible states-of-affairs in a given world. Applied to the analysis of Aristotle's modal syllogistic as found in the Prior Analytics A8-22, it sheds light on various fine-grained distinctions which when made allow us to clarify some ambiguities and obtain (...)
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  30. On the Logical Geometry of Geometric Angles.Hans Smessaert & Lorenz Demey - 2022 - Logica Universalis 16 (4):581-601.
    In this paper we provide an analysis of the logical relations within the conceptual or lexical field of angles in 2D geometry. The basic tripartition into acute/right/obtuse angles is extended in two steps: first zero and straight angles are added, and secondly reflex and full angles are added, in both cases extending the logical space of angles. Within the framework of logical geometry, the resulting partitions of these logical spaces yield bitstring semantics of increasing complexity. These bitstring analyses allow a (...)
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  31. Did Aristotle Endorse Aristotle’s Thesis? A Case Study in Aristotle’s Metalogic.Yale Weiss - 2022 - Notre Dame Journal of Formal Logic 63 (4):551-579.
    Since McCall (1966), the heterodox principle of propositional logic that it is impossible for a proposition to be entailed by its own negation—in symbols, ¬(¬φ→φ)—has gone by the name of Aristotle’s thesis, since Aristotle apparently endorses it in Prior Analytics 2.4, 57b3–14. Scholars have contested whether Aristotle did endorse his eponymous thesis, whether he could do so consistently, and for what purpose he endorsed it if he did. In this article, I reconstruct Aristotle’s argument from this passage and show that (...)
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  32. Non-classical Comparative Logic I: Standard Categorical Logic–from SLe to IFLe.Amer Amikhteh & Seyed Ahmad Mirsanei - 2021 - Logical Studies 12 (1):1-24.
    n this paper, a non-classical axiomatic system was introduced to classify all moods of Aristotelian syllogisms, in addition to the axiom "Every a is an a" and the bilateral rules of obversion of E and O propositions. This system consists of only 2 definitions, 2 axioms, 1 rule of a premise, and moods of Barbara and Datisi. By adding first-degree propositional negation to this system, we prove that the square of opposition holds without using many of the other rules of (...)
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  33. Dialectic after Plato and Aristotle: Thomas Bénatouïl and Katerina Ierodiakonou, editors. Foreword by T. Bénatouïl. Cambridge: Cambridge University Press, 2019. 385 pp. ISBN 9781108471909.O. Yu Goncharko - 2021 - History and Philosophy of Logic 43 (1):96-101.
    The general content of the book is dedicated to the dialectical practices and their logical tools and techniques developed after Plato and Aristotle within the philosophical schools of the Hellenis...
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  34. Connexive Principles After a ‘Classical’ Turn in Medieval Logic.Spencer C. Johnston - 2021 - History and Philosophy of Logic 43 (3):251-263.
    The aim of this paper is to look at the arguments advanced by three Parisian arts masters about how to understand Prior Analytics II 4 and the more general discussion that medieval authors situate...
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  35. (1 other version)History of Arabic Logic.Mehmet Karabela - 2021 - In Islamic Thought Through Protestant Eyes. New York: Routledge. pp. 224-235.
    Johannes Steuchius’ disputatio uses Arabic logic to present an historical account of the development of philosophical thought in Arabia before and after the emergence of Islam. Steuchius first proposes that philosophy drew its origins from the East. His evidence for this claim is that many of the Greek philosophers, considered the forefathers of European philosophy, began cultivating their philosophical thinking as a result of exposure to ancient Eastern philosophy. After the introduction of Greek philosophy, it is agreed that dialectic was (...)
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  36. History of Rational Philosophy among the Arabs and Turks.Mehmet Karabela - 2021 - In Islamic Thought Through Protestant Eyes. New York: Routledge. pp. 181-194.
    In his disputatio, Johann Peter von Ludewig provides a history of rational philosophy among the Arabs and sets out to contextualize the Turks’ attitude to it. Like many Lutheran scholars of the time, Ludewig believed that Islam, as a religion, impeded the development of rational philosophy in the Arab world. However, unlike those philosophers, he examines external influences that may have fed the interest of Arab Muslims in rational philosophy, especially dialectic. Unlike Orthodox Lutherans, such as Pfeiffer and Kromayer, in (...)
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  37. Exploring the Landscape of Relational Syllogistic Logics.Alex Kruckman & Lawrence S. Moss - 2021 - Review of Symbolic Logic 14 (3):728-765.
    This paper explores relational syllogistic logics, a family of logical systems related to reasoning about relations in extensions of the classical syllogistic. These are all decidable logical systems. We prove completeness theorems and complexity results for a natural subfamily of relational syllogistic logics, parametrized by constructors for terms and for sentences.
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  38. The Aftermath of Syllogism. Aristotelian Logical Argument from Avicenna to Hegel: M. SGARBI and M. COSCI, editors. London and New York: Bloomsbury Academic, 2018. 220 pp. Paperback $39.95, ISBN 978-1-3501-2315-1, Hardback $120.00, ISBN 978-1-3500-4352-7, ePDF $35.95, ISBN 978-1-3500-4354-1. [REVIEW]J. Mendelsohn - 2021 - History and Philosophy of Logic 42 (2):189-191.
    This volume brings together nine previously unpublished, historically focused papers covering syllogistic logic and the notion of the syllogism. The book’s purpose, according to the editors, is ‘to...
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  39. The Cretan Square.Jean-Yves Beziau & Jens Lemanski - 2020 - Logica Universalis 14 (1):1-5.
    This special issue is related to the 6th World Congress on the Square of Opposition which took place at the Orthodox Academy of Crete in November 2018. In this introductory paper we explain the context of the event and the topics discussed.
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  40. (2 other versions)The Power of Logic, 6th edition.Daniel Howard-Snyder, Frances Howard-Snyder & Ryan Wasserman - 2020 - New York: McGraw-Hill. Edited by Daniel Howard-Snyder & Ryan Wasserman.
    This is a basic logic text for first-time logic students. Custom-made texts from the chapters is an option as well. And there is a website to go with text too.
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  41. Internal Negation and the Principles of Non-Contradiction and of Excluded Middle in Aristotle.Christopher Izgin - 2020 - History and Philosophy of Logic 41 (1):1-15.
    It has long been recognized that negation in Aristotle’s term logic differs syntactically from negation in classical logic: modern external negation attaches to propositions fully formed, whereas Aristotelian internal negation forms propositions from sentential constituents. Still, modern external negation is used to render Aristotelian internal negation, as may be seen in formalizations of Aristotle’s semantic principles of non-contradiction and of excluded middle. These principles govern the distribution of truth values among pairs of contradictory propositions, and Aristotelian contradictories always consist of (...)
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  42. Yamauchi Tokuryū, un portrait philosophique.Romaric Jannel - 2020 - In Tokuryū Yamauchi, Augustin Berque & Romaric Jannel (eds.), Logos et Lemme. Pensée occidentale, pensée orientale. Paris: CNRS Éditions. pp. 7-18.
    Yamauchi Tokuryū, 2020. Logos et Lemme: Pensée occidentale, pensée orientale 『ロゴスとレンマ』(1974). Translated by Augustin Berque with the assistance of Romaric Jannel. Paris: CNRS Éditions.
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  43. Proof by Assumption of the Possible in Prior Analytics, 1.15; How Not to Blend Modal Frameworks.Doukas Kapantais & George Karamanolis - 2020 - History and Philosophy of Logic 41 (3):203-216.
    The present paper aims to show that the reconstruction of the formal framework of the proofs in Pr. An. 1.15, as proposed by Malink and Rosen 2013 (‘Proof by Assumption of the Possible in Prior Analytics 1.15’, Mind, 122, 953-85) is due to affront a double impasse. Malink and Rosen argue convincingly that Aristotle operates with two different modal frameworks, one as found in the system of modal logic presented in Prior Analytics 1.3 and 8-22, and one occurring in many (...)
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  44. Remarks on the origin and foundations of formalisation.Srećko Kovač - 2020 - In Marcin Będkowski, Anna Brożek, Alicja Chybińska, Stepan Ivanyk & Dominik Traczykowski (eds.), Formal and Informal Methods in Philosophy. Boston: Brill | Rodopi. pp. 163-179..
    The Aristotelian origins of formal systems are outlined, together with Aristotle's use of causal terms in describing syllogisms. The precision and exactness of a formalism, based on the projection of logical forms into perceptive signs, is contrasted with foundational, abstract concepts, independent of any formalism, which are presupposed for the understanding of a formal language. The definition of a formal system by means of a Turing machine is put in the context of Wittgenstein's general considerations of a machine understood as (...)
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  45. Extended Syllogistics in Calculus CL.Jens Lemanski - 2020 - Journal of Applied Logics 8 (2):557-577.
    Extensions of traditional syllogistics have been increasingly researched in philosophy, linguistics, and areas such as artificial intelligence and computer science in recent decades. This is mainly due to the fact that syllogistics is seen as a logic that comes very close to natural language abilities. Various forms of extended syllogistics have become established. This paper deals with the question to what extent a syllogistic representation in CL diagrams can be seen as a form of extended syllogistics. It will be shown (...)
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  46. Arthur Schopenhauer on Naturalness in Logic.Jens Lemanski & Hubert Martin Schüler - 2020 - In Language, Logic, and Mathematics in Schopenhauer. Basel, Schweiz: Birkhäuser. pp. 145-165.
    The question of naturalness in logic is widely discussed in today’s research literature. On the one hand, naturalness in the systems of natural deduction is intensively discussed on the basis of Aristotelian syllogistics. On the other hand, research on “natural logic” is concerned with the implicitly existing logical laws of natural language, and is therefore also interested in the naturalness of syllogistics. In both research areas, the question arises what naturalness exactly means, in logic as well as in language. We (...)
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  47. Syllogistic Logic with Cardinality Comparisons, on Infinite Sets.Lawrence S. Moss & Selçuk Topal - 2020 - Review of Symbolic Logic 13 (1):1-22.
    This article enlarges classical syllogistic logic with assertions having to do with comparisons between the sizes of sets. So it concerns a logical system whose sentences are of the following forms: Allxareyand Somexarey, There are at least as manyxasy, and There are morexthany. Herexandyrange over subsets (not elements) of a giveninfiniteset. Moreover,xandymay appear complemented (i.e., as$\bar{x}$and$\bar{y}$), with the natural meaning. We formulate a logic for our language that is based on the classical syllogistic. The main result is a soundness/completeness theorem. (...)
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  48. A Cube of Opposition for Predicate Logic.Jørgen Fischer Nilsson - 2020 - Logica Universalis 14 (1):103-114.
    The traditional square of opposition is generalized and extended to a cube of opposition covering and conveniently visualizing inter-sentential oppositions in relational syllogistic logic with the usual syllogistic logic sentences obtained as special cases. The cube comes about by considering Frege–Russell’s quantifier predicate logic with one relation comprising categorical syllogistic sentence forms. The relationships to Buridan’s octagon, to Aristotelian modal logic, and to Klein’s 4-group are discussed.GraphicThe photo shows a prototype sculpture for the cube.
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  49. (1 other version)Swyneshed, Aristotle and the Rule of Contradictory Pairs.Stephen Read - 2020 - Logica Universalis 14 (1):27-50.
    Roger Swyneshed, in his treatise on insolubles, dating from the early 1330s, drew three notorious corollaries from his solution. The third states that there is a contradictory pair of propositions both of which are false. This appears to contradict what Whitaker, in his iconoclastic reading of Aristotle’s De Interpretatione, dubbed “The Rule of Contradictory Pairs”, which requires that in every such pair, one must be true and the other false. Whitaker argued that, immediately after defining the notion of a contradictory (...)
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  50. Aristotelés, Łukasiewicz a prázdné termíny.Zuzana Rybaříková - 2020 - Filosoficky Casopis 68 (4):605-622.
    In recent times there has been a shift in the interpretation of Aristotle’s logic. Many researchers have pointed out that the concept of existential import appears in Aristotle’s logic and philosophy, and that Aristotle worked with the concept of empty terms although his concept differs from that which is used in modern logic. Additionally, his search for the “culprits” of old and incorrect interpretation has been tied to the development of modern interpretation. Apart from the traditional concept of the logical (...)
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