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1375 found
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  1. Swyneshed, Paradox and the Rule of Contradictory Pairs.Stephen Read - manuscript
    Roger Swyneshed, in his treatise on insolubles (logical paradoxes), dating from the early 1330s, drew three notorious corollaries of his solution. The third states that there is a contradictory pair of propositions both of which are false. This appears to contradict the Rule of Contradictory Pairs, which requires that in every such pair, one must be true and the other false. Looking back at Aristotle's treatise De Interpretatione, we find that Aristotle himself, immediately after defining the notion of a contradictory (...)
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  2. Via antiqua vs. via moderna semantics: Two ways of constructing semantic theory.Gyula Klima - manuscript
    1st GPMR Workshop on Logic and Semantics: Medieval Logic and Modern Applied Logic, Reinische Friedrich Wilhelms Universität Bonn, Germany, 2007.
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  3. Twelfth asian logic conference.Rod Downey - forthcoming - Bulletin of Symbolic Logic.
  4. Introduction to ‘Studies in Post-Medieval Logic’.Christophe Geudens & Steven Coesemans - forthcoming - Tandf: History and Philosophy of Logic:1-4.
  5. N. Germann and S. Harvey editors. The Origin and Nature of Language and Logic: Perspectives in Medieval Islamic, Jewish, and Christian Thought, Turnhout: Brepols, 2020, xiii + 422 pp. €71,46, ISBN 978-2503588926. [REVIEW]W. Hodges - forthcoming - History and Philosophy of Logic:1-4.
    N. Germann and S. Harvey, editors. The Origin and Nature of Language and Logic: Perspectives in Medieval Islamic, Jewish, and Christian Thought. Turnhout: Brepols, 2020. xiii +422 pp. €71,46, ISBN...
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  6. 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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  7. A Hegelian among germanists-the medieval studies of Rosenkranz, Karl.U. Rautenberg - forthcoming - Hegel-Studien.
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  8. Late scholastic probable arguments and their contrast with rhetorical and demonstrative arguments.James Franklin - 2022 - Philosophical Inquiries 10 (2).
    Aristotle divided arguments that persuade into the rhetorical (which happen to persuade), the dialectical (which are strong so ought to persuade to some degree) and the demonstrative (which must persuade if rightly understood). Dialectical arguments were long neglected, partly because Aristotle did not write a book about them. But in the sixteenth and seventeenth century late scholastic authors such as Medina, Cano and Soto developed a sound theory of probable arguments, those that have logical and not merely psychological force but (...)
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  9. Secundum Quid and the Pragmatics of Arguments. The Challenges of the Dialectical Tradition.Fabrizio Macagno - 2022 - Argumentation 36 (3):317-343.
    The phrase _secundum quid et simpliciter_ is the Latin expression translating and labelling the sophism described by Aristotle as connected with the use of some particular expression “absolutely or in a certain respect and not in its proper sense.” This paper presents an overview of the analysis of this fallacy in the history of dialectics, reconstructing the different explanations provided in the Aristotelian texts, the Latin and medieval dialectical tradition, and the modern logical approaches. The _secundum quid_ emerges as a (...)
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  10. ‘Everything True Will Be False’: Paul of Venice and a Medieval Yablo Paradox.Stephen Read - 2022 - History and Philosophy of Logic 43 (4):332-346.
    In his Quadratura, Paul of Venice considers a sophism involving time and tense which appears to show that there is a valid inference which is also invalid. Consider this inference concerning some proposition A : A will signify only that everything true will be false, so A will be false. Call this inference B. A and B are the basis of an insoluble-that is, a Liar-like paradox. Like the sequence of statements in Yablo's paradox, B looks ahead to a moment (...)
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  11. Multiple Generality in Scholastic Logic.Boaz Faraday Schuman - 2022 - Oxford Studies in Medieval Philosophy 10:215-282.
    Multiple generality has long been known to cause confusion. For example, “Everyone has a donkey that is running” has two readings: either (i) there is a donkey, owned by everyone, and it is running; or (ii) everyone owns some donkey or other, and all such donkeys run. Medieval logicians were acutely aware of such ambiguities, and the logical problems they pose, and sought to sort them out. One of the most ambitious undertakings in this regard is a pair of massive (...)
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  12. The Consistency of a Certain Medieval-Like Solution to the Liar Paradox. Proof Given by Bolesław Sobociński.Kordula Świętorzecka - 2022 - History and Philosophy of Logic 43 (3):275-283.
    In Formale Logik, published in 1956, J. M. Bocheński presented his first proposal for the solution to the liar paradox, which he related to Paul of Venice's argumentation from Logica Magna. A formalized version of this solution was then presented in Formalisierung einer scholastischen Lösung der Paradoxie des ‘Lügners’ in 1959. The historical references of the resulting formalism turn out to be closer to Albert de Saxon's argument and the later solution by John Buridan. Bocheński did not pose the question (...)
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  13. 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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  14. Time and Indexicality in Buridan’s Concept of Logical Consequence.Manuel A. Dahlquist - 2021 - History and Philosophy of Logic 42 (4):374-397.
    Jean Buridan developed his theory of consequence within a semantical framework compatible with what we now call token-based semantics. In his Treatise on Consequences and Sophismata, Buridan showed...
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  15. Mixed Conditional-Categorical Syllogisms from Avicenna to Urmawī.Khaled El-Rouayheb - 2021 - History and Philosophy of Logic 43 (3):232-250.
    A number of medieval Arabic logicians discussed inferences that combine the principles of propositional and term logic, for example: Whenever H is Z then Every J is DNo D is AWhenever H is Z then S...
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  16. 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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  17. 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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  18. Regensburg Colloquy of 1601: Its Disputation Method and the German Second Scholastic Disputation Handbooks.Lukáš Kotala - 2021 - History and Philosophy of Logic 43 (1):1-50.
    The article deals with the Lutheran–Catholic religious colloquy at Regensburg of 1601. It points out that the event was of importance not only for political and religious reasons but also in terms...
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  19. Thirteenth-Century Aristotelian Logic: The Study of Scientific Method.Ana Maria Mora-Marquez - 2021 - Oxford Studies in Medieval Philosophy 9:146-185.
  20. COVID 19 PANDEMIC AND THE QUESTION OF DIVINE PROVIDENCE IN A DIGITALIZED AGE.Justin Nnaemeka Onyeukaziri - 2021 - In Digitalization of society and the future of Christianity. On the issue of transformation of the value-normative system of the society. Moscow, Russia: pp. 176-192.
    This paper attempts to bring the traditional theodicy on the question of evil and the Divine Providence, to its logical conclusion, in such a way that a believer is challenged to totally accept the implication of his or her faith in God. To have faith is to completely surrender to Divine Providence. It is to completely surrender ones free will to the rational conclusions or consequences of faith in the Divine Providence. Hence, this paper is for those who are perplexed (...)
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  21. al-Muʻīnāt fī Manṭiq al-Shaykh al-Muẓaffar: shurūḥāt, iḍāʼāt, rusūm bayānīyah, kharāʼiṭ dhihnīyah, taṭbīqāt.Aḥmad Samīr Qaṣlah - 2021 - Bayrūt: Dār al-Maʻārif al-Ḥikmīyah.
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  22. Modality and Validity in the Logic of John Buridan.Boaz Faraday Schuman - 2021 - Dissertation, University of Toronto
    What makes a valid argument valid? Generally speaking, in a valid argument, if the premisses are true, then the conclusion must necessarily also be true. But on its own, this doesn’t tell us all that much. What is truth? And what is necessity? In what follows, I consider answers to these questions proposed by the fourteenth century logician John Buridan († ca. 1358). My central claim is that Buridan’s logic is downstream from his metaphysics. Accordingly, I treat his metaphysical discussions (...)
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  23. Brentano and the Medieval Distinction Between First and Second Intentions.Hamid Taieb - 2021 - Topoi 41 (1):143-158.
    Brentano’s account of intentionality has often been traced back to its scholastic sources. This is justified by his claim that objects of thought have a specific mode of being—namely, “intentional inexistence” —and that mental acts have an “intentional relation” to these objects. These technical terms in Brentano do indeed recall the medieval notions of esse intentionale, which is a mode of being, and of intentio, which is a “tending towards” of mental acts. However, within the lexical family of intentio there (...)
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  24. Essere e causalità: ontologia tomista.Pasquale Viola - 2021 - Dissertation,
    L'elaborato intende analizzare lo statuto ontologico dell'ente a partire dal binomio esse e id quod est, sviluppato da Tommaso nel commento al De Hebdomadibus di Boezio, specificando i concetti di partecipazione come causalità forte, e di essere come massimo estensivo e più generale.
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  25. Abharī’s Solution to the Liar Paradox: A Logical Analysis.Mohammad Saleh Zarepour - 2021 - History and Philosophy of Logic 42 (1):1-16.
    The medieval Islamic solutions to the liar paradox can be categorized into three different families. According to the solutions of the first family, the liar sentences are not well-formed truth-apt sentences. The solutions of the second family are based on a violation of the classical principles of logic (e.g. the principle of non-contradiction). Finally, the solutions of the third family render the liar sentences as simply false without any contradiction. In the Islamic tradition, almost all the well-known solutions of the (...)
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  26. al-Sullam.ʻAbd al-Raḥmān ibn Muḥammad al-Akhḍarī - 2020 - In Māhir Muḥammad ʻAdnān ʻUthmān, ʻAbd al-Raḥmān ibn Muḥammad Akhḍarī, Aḥmad ibn ʻAbd al-Munʻim Damanhūrī, Aḥmad ibn Muḥammad Wallālī, QuwaysinīḤasan ibn al-Darwīsh, Aḥmad ibn al-Mubārak Sijilmāsī, Saʻīd ibn Ibrāhīm Qaddūrah & Khaṭṭāb ʻUmar Darawī (eds.), Majmūʻ al-Sullam al-murawnaq: wa-yashtamilu ʻalá sabʻat kutub. Dār Taḥqīq al-Kitāb lil-Ṭibāʻah wa-al-Nashr wa-al-Tawzīʻ.
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  27. Īḍāḥ al-mubham min maʻānī al-Sullam.Aḥmad ibn ʻAbd al-Munʻim al-Damanhūrī - 2020 - In Māhir Muḥammad ʻAdnān ʻUthmān, ʻAbd al-Raḥmān ibn Muḥammad Akhḍarī, Aḥmad ibn ʻAbd al-Munʻim Damanhūrī, Aḥmad ibn Muḥammad Wallālī, QuwaysinīḤasan ibn al-Darwīsh, Aḥmad ibn al-Mubārak Sijilmāsī, Saʻīd ibn Ibrāhīm Qaddūrah & Khaṭṭāb ʻUmar Darawī (eds.), Majmūʻ al-Sullam al-murawnaq: wa-yashtamilu ʻalá sabʻat kutub. Dār Taḥqīq al-Kitāb lil-Ṭibāʻah wa-al-Nashr wa-al-Tawzīʻ.
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  28. Taqrīrāt.Khaṭṭāb ʻUmar al-Darawī - 2020 - In Māhir Muḥammad ʻAdnān ʻUthmān, ʻAbd al-Raḥmān ibn Muḥammad Akhḍarī, Aḥmad ibn ʻAbd al-Munʻim Damanhūrī, Aḥmad ibn Muḥammad Wallālī, QuwaysinīḤasan ibn al-Darwīsh, Aḥmad ibn al-Mubārak Sijilmāsī, Saʻīd ibn Ibrāhīm Qaddūrah & Khaṭṭāb ʻUmar Darawī (eds.), Majmūʻ al-Sullam al-murawnaq: wa-yashtamilu ʻalá sabʻat kutub. Dār Taḥqīq al-Kitāb lil-Ṭibāʻah wa-al-Nashr wa-al-Tawzīʻ.
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  29. Sharḥ al-Sullam al-munawraq.Ḥasan ibn al-Darwīsh al-Quwaysinī - 2020 - In Māhir Muḥammad ʻAdnān ʻUthmān, ʻAbd al-Raḥmān ibn Muḥammad Akhḍarī, Aḥmad ibn ʻAbd al-Munʻim Damanhūrī, Aḥmad ibn Muḥammad Wallālī, QuwaysinīḤasan ibn al-Darwīsh, Aḥmad ibn al-Mubārak Sijilmāsī, Saʻīd ibn Ibrāhīm Qaddūrah & Khaṭṭāb ʻUmar Darawī (eds.), Majmūʻ al-Sullam al-murawnaq: wa-yashtamilu ʻalá sabʻat kutub. Dār Taḥqīq al-Kitāb lil-Ṭibāʻah wa-al-Nashr wa-al-Tawzīʻ.
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  30. Taqyīdāt.Aḥmad ibn al-Mubārak al-Sijilmāsī - 2020 - In Māhir Muḥammad ʻAdnān ʻUthmān, ʻAbd al-Raḥmān ibn Muḥammad Akhḍarī, Aḥmad ibn ʻAbd al-Munʻim Damanhūrī, Aḥmad ibn Muḥammad Wallālī, QuwaysinīḤasan ibn al-Darwīsh, Aḥmad ibn al-Mubārak Sijilmāsī, Saʻīd ibn Ibrāhīm Qaddūrah & Khaṭṭāb ʻUmar Darawī (eds.), Majmūʻ al-Sullam al-murawnaq: wa-yashtamilu ʻalá sabʻat kutub. Dār Taḥqīq al-Kitāb lil-Ṭibāʻah wa-al-Nashr wa-al-Tawzīʻ.
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  31. Qawl al-musallam fī taḥqīq maʻānī al-Sullam.Aḥmad ibn Muḥammad al-Wallālī - 2020 - In Māhir Muḥammad ʻAdnān ʻUthmān, ʻAbd al-Raḥmān ibn Muḥammad Akhḍarī, Aḥmad ibn ʻAbd al-Munʻim Damanhūrī, Aḥmad ibn Muḥammad Wallālī, QuwaysinīḤasan ibn al-Darwīsh, Aḥmad ibn al-Mubārak Sijilmāsī, Saʻīd ibn Ibrāhīm Qaddūrah & Khaṭṭāb ʻUmar Darawī (eds.), Majmūʻ al-Sullam al-murawnaq: wa-yashtamilu ʻalá sabʻat kutub. Dār Taḥqīq al-Kitāb lil-Ṭibāʻah wa-al-Nashr wa-al-Tawzīʻ.
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  32. Sharḥ Sullam al-Akhḍarī fī ʻilm al-manṭiq.Bin Alummā & Muḥammad Sālim bin Attāh - 2020 - Anwākshūṭ: Dār Jusūr ʻAbd al-ʻAzīz.
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  33. The Logic of the Trinity and the Filioque Question in Thomas Aquinas: A Formal Approach.Fábio Bertato - 2020 - In R. S. Silvestre (ed.), Beyond Faith and Rationality. Sophia Studies in Cross-cultural Philosophy of Traditions and Cultures, vol 34. Springer, Cham. Chama, Switzerland: pp. 137-151.
  34. The logical relation of consequence.Basil Evangelidis - 2020 - Humanities Bulletin 3 (2):77-90.
    The present endeavour aims at the clarification of the concept of the logical consequence. Initially we investigate the question: How was the concept of logical consequence discovered by the medieval philosophers? Which ancient philosophical foundations were necessary for the discovery of the logical relation of consequence and which explicit medieval contributions, such as the notion of the formality (formal validity), led to its discovery. Secondly we discuss which developments of modern philosophy effected the turn from the medieval concept of logical (...)
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  35. Introduction to ‘Studies in Post-Medieval Logic’.Christophe Geudens & Steven Coesemans - 2020 - History and Philosophy of Logic 41 (4):305-308.
    This special issue contains three papers on evolutions in logic during the so-called ‘post-medieval’ period. The papers discuss the following topics: traditions of...
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  36. Between Imagination and Gambling. The Forms of Validity in Scholastic Logic.Miroslav Hanke - 2020 - History and Philosophy of Logic 41 (4):331-351.
    Scholastic logic provided us with a variety of accounts of validity. With some degree of simplification, validity translated into truth-preservation evaluated against a set of worlds and wa...
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  37. Thomas Aquinas, Magister Ludi: The Relation of Medieval Logic and Theology.Joshua P. Hochschild - 2020 - Hungarian Philosophical Review 64 (4):43-62.
    This paper seeks to articulate the relationship between medieval logic and theology. Reviewing modern scholarship, we find that the purpose of medieval logic, when it is even inquired about, has proven difficult to articulate without reference to theology. This prompts reflection on the metaphors of logic as a “tool” and a “game”: a tool is not merely instrumental, insofar as it can have its own intrinsic goods and can shape and be shaped by that which it serves; likewise a game, (...)
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  38. Robert Kilwardby’s Science of Logic: A Thirteenth-Century Intensional Logic: P. Thom, Leiden and Boston: Brill, 2019. xviii+310 pp. $146. ISBN 978-90-04-40846-3.S. C. Johnston - 2020 - History and Philosophy of Logic 41 (3):301-303.
    Robert Kilwardby occupies an important place in the history of logic, and the history of western thought more generally. Perhaps best known to scholars for his Oxford condemnations of 1277...
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  39. Charles Sanders Peirce and Coimbra.Robert Martins Junqueira - 2020 - In Mário Santiago de Carvalho & Simone Guidi (eds.), Conimbricenses.org Encyclopedia. Coimbra, Portugal: Instituto de Estudos Filosóficos.
    North-American philosophy was bolstered with the doctrines of the Jesuits. The penetration of the Coimbra Jesuits in the United States of America can be examined through the paradigmatic case of Charles Sanders Peirce. The extent to which Peirce was affected by the Coimbra Jesuits has not yet been researched. However, it is known that Peirce was acquainted with the Coimbra Jesuit Aristotelian Course.
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  40. Sharḥ al-Sullam.Saʻīd Qaddūrah - 2020 - In Māhir Muḥammad ʻAdnān ʻUthmān, ʻAbd al-Raḥmān ibn Muḥammad Akhḍarī, Aḥmad ibn ʻAbd al-Munʻim Damanhūrī, Aḥmad ibn Muḥammad Wallālī, QuwaysinīḤasan ibn al-Darwīsh, Aḥmad ibn al-Mubārak Sijilmāsī, Saʻīd ibn Ibrāhīm Qaddūrah & Khaṭṭāb ʻUmar Darawī (eds.), Majmūʻ al-Sullam al-murawnaq: wa-yashtamilu ʻalá sabʻat kutub. Dār Taḥqīq al-Kitāb lil-Ṭibāʻah wa-al-Nashr wa-al-Tawzīʻ.
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  41. 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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  42. Wyclif's Logica and the Logica Oxoniensis.Mark Thakkar - 2020 - In Luigi Campi & Stefano Simonetta (eds.), Before and After Wyclif: Sources and Textual Influences. Basel, Switzerland: pp. 1-31.
    John Wyclif’s logical works have lain under a kind of fog since they were first published in the 1890s. My first aim is to clear up some long-standing confusions by dispelling this fog once and for all. A partial identification of Wyclif’s source material then allows me to make a more dramatic claim about persistent misunderstandings of what is thought to be his earliest work.
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  43. Revisiting the Exegetical Tradition of Galen's Prologue to the Art of Medicine before Leoniceno: Logic, Teaching, and Didactics in Pietro Torrigiano's Plusquam commentum.Okihito Utamura - 2020 - History and Philosophy of Logic 41 (4):352-375.
    This paper investigates the pre-history of Nicolò Leoniceno's De tribus doctrinis ordinatis secundum Galeni sententiam. It has been often maintained that Leoniceno's treatise broke with scho...
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  44. On the Historical Transformations of the Square of Opposition as Semiotic Object.Ioannis M. Vandoulakis & Tatiana Yu Denisova - 2020 - Logica Universalis 14 (1):7-26.
    In this paper, we would show how the logical object “square of opposition”, viewed as semiotic object, has been historically transformed since its appearance in Aristotle’s texts until the works of Vasiliev. These transformations were accompanied each time with a new understanding and interpretation of Aristotle’s original text and, in the last case, with a transformation of its geometric configuration. The initial textual codification of the theory of opposition in Aristotle’s works is transformed into a diagrammatic one, based on a (...)
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  45. Counterpossibles and Normal Defaults in the Filioque Controversy.Jacob Archambault - 2019 - Logica Universalis 13 (4):443-455.
    A counterpossible conditional, or counterpossible for short, is a conditional proposition whose antecedent is impossible. The filioque doctrine is a dogma of western Christian Trinitarian theology according to which the Holy Spirit proceeds from the Father and the Son. The filioque doctrine was the principal theological reason for the Great Schism, the split between Eastern Orthodoxy and western Christianity, which continues today. In the paper, I review one of the earliest medieval defenses of the doctrine in Anselm of Canterbury, and (...)
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  46. Riflessioni sul concetto di necessità nella prima metà del XII secolo.Irene Binini - 2019 - In Fabrizio Amerini, Simone Fellina & Andrea Strazzoni (eds.), Tra antichità e modernità. Studi di storia della filosofia medievale e rinascimentale. Parma: E-theca OnLineOpenAccess Edizioni. pp. 1045-1088.
    In this essay, I consider some logical treatises and commentaries from the first decades of the 12th century (many of which are still unedited) which contain a discussion on modalities and modal logic. After presenting a short catalogue of these sources and a description of their common features, I shall focus on some definitions of the modal term “necessarium” which are provided in them. As we will see, Abelard and logicians of his time advanced three different characterizations of this term: (...)
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  47. Parafrasando Vignaux. Il posto della logica nella storia del pensiero medievale.Dino Buzzetti - 2019 - In Fabrizio Amerini, Simone Fellina & Andrea Strazzoni (eds.), Tra antichità e modernità. Studi di storia della filosofia medievale e rinascimentale. Parma: E-theca OnLineOpenAccess Edizioni. pp. 974-1044.
    A sound historiographical account of the role of logic in the development of medieval philosophical and theological reflection requires a thorough examination of its historical roots and its theoretical implications. An apparent historiographical bias, due to the idea that only the development of contemporary formal logic enables a proper reconstruction of the whole history of logic, can be exposed by taking into account the case of the medieval discussions on the topics, starting from their late-antiquity legacy. An attentive inspection of (...)
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  48. Logical Consequence in Avicenna’s Theory.Saloua Chatti - 2019 - Logica Universalis 13 (1):101-133.
    In this paper I examine Avicenna’s conception of the consequence relation. I will consider in particular his categorical and hypothetical logics. I will first analyse his definition of the implication and will show that this relation is not a consequence relation in his frame. Unlike the medieval logicians, he does not distinguish explicitly between material and formal consequences. The arguments discussed in al-Qiyās, where the conclusion is true only in some matters, and would seem close to a material consequence for (...)
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  49. A Nelsonian Response to ‘the Most Embarrassing of All Twelfth-century Arguments’.Luis Estrada-González & Elisángela Ramírez-Cámara - 2019 - History and Philosophy of Logic 41 (2):101-113.
    Alberic of Paris put forward an argument, ‘the most embarrassing of all twelfth-century arguments’ according to Christopher Martin, which shows that the connexive principles contradict some other logical principles that have become deeply entrenched in our most widely accepted logical theories. Building upon some of Everett Nelson’s ideas, we will show that the steps in Alberic of Paris’ argument that should be rejected are precisely the ones that presuppose the validity of schemas that are nowadays taken as some of the (...)
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  50. Mereology in Medieval Logic and Metaphysics. Proceedings of the 21st European Symposium of Medieval Logic and Semantics.Amerini F., Binini I. & Mugnai M. (eds.) - 2019 - Pisa: Edizioni della Normale.
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