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  1. Aristotle’s Principle of Non-Contradiction.Mohammad Bagher Ghomi - manuscript
    Some forms of defining PNC in Aristotle’s works are as follows: a) Everything must be either affirmed or denied (φάναι ἢ ἀποφάναι). (Met., B, 996b28-29) or: it will not be possible to assert and deny the same thing truly at the same time. (Met., Γ, 1008a36-b1) In other words, ‘contradictory statements (ἀντικειμένας φάσεις) are not at the same time true. (Met., Γ, 1011b13-14) Also, ‘It is impossible that contradictories (ἀντίφασιν) should be at the same time true of the same thing.’ (...)
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  2. O princípio de não contradição: princípio ontológico, ôntico e gnosiológico do ser.João Paulo Lima & Claudinei Reis Pereira - 2024 - Revista Opinião Filosófica 15 (2):1-13.
  3. Alexander of Aphrodisias on the Principle of Non-Contradiction: The Argument "from Signification".Inna Kupreeva - 2023 - In M. Mouzala (ed) Ancient Greek Dialectic and Its Reception, W. de Gruyter, 2023. Berlin: W. de Gruyter. pp. 287-330.
  4. ASPECTOS METAONTOLÓGICOS E SEMÂNTICOS DO TRATAMENTO ARISTOTÉLICO DO PRINCÍPIO DA NÃO-CONTRADIÇÃO.Pedro Lemgruber Nascimento - 2023 - Dissertation, Universidade Federal de Uberlândia
  5. O Princípio de Não-Contradição como Condição sine qua non para evita o colapso do discurso significativo – Uma defesa da Leitura Semântica Geral de Metafísica Γ 4 1005b35- 1007a8.Débora Oliveira Silva - 2022 - Dissertation, Federal University of Rio Grande Do Sul
  6. Heraclitus, Change and Objective Contradictions in Aristotle’s Metaphysics Γ.Celso Vieira - 2022 - Rhizomata 10 (2):183-214.
    In Metaphysics Γ, Aristotle argues against those who seem to accept contradictions. He distinguishes between the Sophists, who deny the principle of non-contradiction through arguments, and the Natural Philosophers, whose physical investigations lead to the acceptance of objective contradictions. Heraclitus’ name appears throughout the discussion. Usually, he is associated with the discussion against the Sophists. In this paper, I explore how the discussion with the Natural Philosophers may illuminate both the interpretation of Heraclitus by Aristotle and Heraclitus’ own worldview. To (...)
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  7. L'ontologia della logica immaginaria. Aristotele e Vasil'ev a confronto.Niccolò Rossi - 2021 - Verifiche: Rivista Trimestrale di Scienze Umane 50 (1):147-176.
    The aim of this paper is to show how the invention of imaginary logic by Nikolaj A. Vasil’ev, forerunner of various logical and metaphysical theories appeared in the 20th century, is grounded on a revaluation of Aristotelian ontology. I shall introduce the reason why Aristotle believes that the study of the principle of contradiction is part of ontology (§ 2); I shall explain why Vasil’ev considers the law of contradiction an empirical law, and not a logical one (§ 3.1). I (...)
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  8. Sobre o fundamental da condição e do resultado da demonstração aristotélica do Princípio de Não-Contradição.Rafael Adolfo - 2020 - Dissertation, Federal University of Santa Catarina
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  9. The Concept of Motion in Ancient Greek Thought: Foundations in Logic, Method, and Mathematics.Barbara M. Sattler - 2020 - New York, NY, USA: Cambridge University Press.
    This book examines the birth of the scientific understanding of motion. It investigates which logical tools and methodological principles had to be in place to give a consistent account of motion, and which mathematical notions were introduced to gain control over conceptual problems of motion. It shows how the idea of motion raised two fundamental problems in the 5th and 4th century BCE: bringing together being and non-being, and bringing together time and space. The first problem leads to the exclusion (...)
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  10. Aristotle’s Argument from Truth in Metaphysics Γ 4.Graham Clay - 2019 - Analysis 79 (1):17-24.
    Some of Aristotle’s statements about the indemonstrability of the Principle of Non-Contradiction (PNC) in Metaphysics Γ 4 merit more attention. The consensus seems to be that Aristotle provides two arguments against the demonstrability of the PNC, with one located in Γ 3 and the other found in the first paragraph of Γ 4. In this article, I argue that Aristotle also relies upon a third argument for the same conclusion: the argument from truth. Although Aristotle does not explicitly state this (...)
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  11. QUAL É O OBJETIVO DA DEFESA ARISTOTÉLICA DO PRINCÍPIO DE NÃOCONTRADIÇÃO EM METAFÍSICA Γ4? UMA ANÁLISE COMPARATIVA DE DUAS POSSIBILIDADES DE LEITURA.Débora Oliveira Silva - 2019 - Dissertation, Federal University of Rio Grande Do Sul
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  12. Why Does Aristotle Defend the Principle of Non‐Contradiction Against its Contrary?Daniel Coren - 2018 - Philosophical Forum 49 (1):39-59.
    In his Metaphysics Γ.4, Aristotle defends the principle of non-contradiction (PNC). The PNC says that all contradictions are false. So if some contradictions are true, then PNC is false. Even if PNC’s contrary is false, PNC’s contradictory might still be true. But it’s been noted in the literature for over a century that Aristotle seems to be exclusively interested in attacking PNC’s contrary (‘All contradictions are true’) rather than PNC’s contradictory (‘Some contradictions are true’). So his defense of PNC seems (...)
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  13. Are Potency and Actuality Compatible in Aristotle?Mark Sentesy - 2018 - Epoché: A Journal for the History of Philosophy:239-270.
    The belief that Aristotle opposes potency (dunamis) to actuality (energeia or entelecheia) has gone untested. This essay defines and distinguishes forms of the Opposition Hypothesis—the Actualization, Privation, and Modal—examining the texts and arguments adduced to support them. Using Aristotle’s own account of opposition, the texts appear instead to show that potency and actuality are compatible, while arguments for their opposition produce intractable problems. Notably, Aristotle’s refutation of the Megarian Identity Hypothesis applies with equal or greater force to the Opposition Hypothesis. (...)
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  14. A Interpretação Aristotélica do Pensamento Protagoreano em Metafísica Γ 4-6.Anderson Borges - 2017 - Journal of Ancient Philosophy 11 (2):82-105.
    In Metaphysics Γ 4-6 Aristotle argues that Protagoras is committed not just to denying the PNC, but also to asserting its contrary. In this paper, I offer an analysis of this commitment. I try to show that Aristotle is working with a specific idea in mind: a Protagoreanism ontologically linked to the flux doctrine, as Plato suggested in Theaetetus 152-160.
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  15. NÃO-CONTRADIÇÃO: o mais firme de todos os princípios Uma proposta de leitura para Metafísica Γ 3-6 de Aristóteles.Daniel Lourenço - 2017 - Dissertation, Federal University of Santa Catarina
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  16. A demonstração elêntica em Aristóteles.Thiago Silva Freitas Oliveira - 2017 - Prometeus: Filosofia em Revista 10 (23):193-214.
    O presente trabalho constitui-se de uma breve análise dos trechos que vão de 1005b 35 à 1006a 27 do capítulo quatro do livro Gama da Metafísica de Aristóteles e pretende fornecer uma leitura alternativa àquela feita pela tradição acerca da defesa do princípio de não-contradição elaborada nesse texto por Aristóteles. Com a ideia de um roteiro refutativo, pretendemos mostrar que argumentação em defesa do princípio encontra seu sucesso no seguimento desse roteiro provando, via demonstração elêntica, a validade e universalidade deste.
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  17. Observações sobre a estrutura da significação em Metafísica Γ 4.Vivianne Moreira - 2015 - Journal of Ancient Philosophy 9 (1):22-40.
    This article is intended to examine the structure and scope of the argumentation drawn in Metaphysics Γ 4, 1006a18-b34. As we shall see, though this passage does not bring a complete proof of the Principle of Non-Contradiction, it corresponds to its first step, which consists in determining the conditions of meaning necessary for discourse. That passage encloses in nuce the reasons which underlie Aristotelian conviction con- cerning the conventional nature of names and also brings to light the way this conven- (...)
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  18. A defesa do princípio de não-contradição e a refutação da sofística no livro IV da Metafísica de Aristóteles.Samantha da Graça Simões - 2014 - Dissertation, Universidade Nova de Lisboa
  19. Identidade, Movimento e Não-contradição em Platão e Aristóteles.Arnaldo Martins de Oliveira - 2013 - Dissertation, Universidade São Judas Tadeu, Brazil
    Platão trata no Parmênides das formas ideais e do seu modelo de identidade relacionando-o ao modelo de ser eleata através da noção de um. Tendo concluído a incompatibilidade entre este modelo de atribuição e os seres mutáveis em uma realidade múltipla, ele percebeu que a noção de não-ser deveria ser desvinculada do entendimento de Parmênides através da nova noção de não-ser como diferença apresentada no Sofista. Paralelamente, Aristóteles apresenta um ordenamento parecido através da sua teoria física sobre o movimento, baseada (...)
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  20. On Intellectual Skepticism: A Selection of Skeptical Arguments and Tusi's Criticisms, with Some Comparative Notes.Pirooz Fatoorchi - 2013 - Philosophy East and West 63 (2):213-250.
    This essay deals with a selected part of an epistemological controversy provided by Tūsī in response to the skeptical arguments reported by Rāzī that is related to what might be called "intellectual skepticism," or skepticism regarding the judgments of the intellect, particularly in connection with self-evident principles. It will be shown that Rāzī has cited and exposed a position that seems to be no less than a medieval version of empiricism. Tūsī, in contrast, has presented us with a position that (...)
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  21. Aristotle, Protagoras, and Contradiction: Metaphysics Γ 4-6.Evan Keeling - 2013 - Journal of Ancient Philosophy 7 (2):75-99.
    In both Metaphysics Γ 4 and 5 Aristotle argues that Protagoras is committed to the view that all contradictions are true. Yet Aristotle’s arguments are not transparent, and later, in Γ 6, he provides Protagoras with a way to escape contradictions. In this paper I try to understand Aristotle’s arguments. After examining a number of possible solutions, I conclude that the best way of explaining them is to (a) recognize that Aristotle is discussing a number of Protagorean opponents, and (b) (...)
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  22. Protagoras Through Plato and Aristotle: A Case for the Philosophical Significance of Ancient Relativism.Ugo Zilioli - 2013 - In Jan Van Ophuijsen, Marlein Van Raalte & Peter Stork (eds.), Protagoras of Abdera: the Man, his measure. Boston: Brill.
    In this contribution, I explore the treatment that Plato devotes to Protagoras’ relativism in the first section of the Theaetetus (151 E 1–186 E 12) where, among other things, the definition that knowledge is perception is put under scrutiny. What I aim to do is to understand the subtlety of Plato’s argument about Protagorean relativism and, at the same time, to assess its philosophical significance by revealing the inextric¬ability of ontological and epistemological aspects on which it is built (for this (...)
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  23. Metafísica Γ4- Um Argumento de Conquistas Progressivas.Luis Fellipe Garcia - 2012 - Dissertation, Ufrgs, Brazil
  24. The Elenctic Proof of Aristotle’s Principle of Non-contradiction.Dariusz Piętka - 2012 - Archiwum Historii Filozofii I Myśli Społecznej 57.
  25. (1 other version)Pyrrhonism and the Law of Non-Contradiction.Diego E. Machuca - 2011 - In Pyrrhonism in Ancient, Modern, and Contemporary Philosophy. Springer.
    The question of whether the Pyrrhonist adheres to certain logical principles, criteria of justification, and inference rules is of central importance for the study of Pyrrhonism. Its significance lies in that, whereas the Pyrrhonist describes his philosophical stance and argues against the Dogmatists by means of what may be considered a rational discourse, adherence to any such principles, criteria, and rules does not seem compatible with the radical character of his skepticism. Hence, if the Pyrrhonist does endorse them, one must (...)
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  26. Ohne Satz vom Widerspruch keine Entität – Der Satz vom Widerspruch als Strukturformel der Realität.Gianluigi Segalerba - 2011 - Journal of Ancient Philosophy 5 (2):1-57.
    This paper deals with the strategy of defence that Aristotle dedicates to the principle of contradiction; the analysis is concentrated on passages of Metaphysics Gamma 4. The main thesis of the paper is that Aristotle’s strategy is an ontological, and therefore not only a logical, one: the principle is defended on the basis of the, from an ontological point of view, unacceptable consequences which would arise in case of the absence of the principle itself. These consequences are, for instance, the (...)
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  27. Two Indian dialectical logics: saptabhangi and catuskoti.Fabien Schang - 2010 - Journal of the Indian Council of Philosophical Research 27 (1):45-75.
    A rational interpretation is proposed for two ancient Indian logics: the Jaina saptabhaṅgī, and the Mādhyamika catuṣkoṭi. It is argued that the irrationality currently imputed to these logics relies upon some philosophical preconceptions inherited from Aristotelian metaphysics. This misunderstanding can be corrected in two steps: by recalling their assumptions about truth; by reconstructing their ensuing theory of judgment within a common conceptual framework.
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  28. A não-contradição é a medida de todas as coisas: sobre a crítica de Aristóteles a Protágoras no Livro Γ da Metafísica.Pedro Clemente Bessa Prado Lippmann - 2009 - Codex 1 (2):27-50.
  29. The Law of Non-Contradiction as a Metaphysical Principle.Tuomas E. Tahko - 2009 - Australasian Journal of Logic 7:32-47.
    The goals of this paper are two-fold: I wish to clarify the Aristotelian conception of the law of non-contradiction as a metaphysical rather than a semantic or logical principle, and to defend the truth of the principle in this sense. First I will explain what it in fact means that the law of non-contradiction is a metaphysical principle. The core idea is that the law of non-contradiction is a general principle derived from how things are in the world. For example, (...)
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  30. Sentido y Contradicción.Alfonso García Marqués - 2007 - The Proceedings of the Twenty-First World Congress of Philosophy 12:127-136.
    In Book IV of the Metaphysics Aristotle argues that first philosophy investigates not only being qua being but also the axioms or principles of demonstration. In the same place he establishes which principles are first. The first among these is the principle of contradiction. The thesis I defend in my communication is that the principle of contradiction in Aristotle is not merely formal in the style of modern symbolic logic, but is the constituent law of all discourse. As such, the (...)
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  31. Significação e não contradição.Raphael Zillig - 2007 - Analytica. Revista de Filosofia 11 (1):107-126.
    The so called “elenctic” defense of the principle of non-contradiction in Metaphysics Γ4 will succed if only the opponent will say something. The strategy consists in showing that, in speaking, the opponent has al- ready accepted the principle. Given the structure of the argument, the only way to avoid begging the question is not to ask from the opponent any commitment exceeding the conditions of mere meanigfullness of speech. In particular, it is specially important to avoid any reliance on Aristotelian (...)
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  32. Dire et penser dans le principe psychologique de non-contradiction d'Aristote.Fabien Schang - 2005 - Public@Tions Electroniques de Philosophi@ Scienti@E.
    Un paralogisme semble commis dans la démonstration par Aristote du principe psychologique de non-contradiction : à partir d’un principe performatif d’assertion (dire quelque chose, c’est le croire), une approche moderne nous incline à prétendre qu’Aristote présuppose une transparence référentielle des contextes opaques de croyance afin de corréler les versions psychologique et logique. Nous tenterons de restituer la preuve du principe (I). Au moyen de la formalisation moderne, nous appliquerons cette explication à quelques paradoxes (II). Nous en conclurons la nature de (...)
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  33. In-contraddizione. Il principio di contraddizione alle origini della nuova logica, coll. « Hesperides, Letterature e culture occidentali ». [REVIEW]Jean-Pierre Ginisti - 2001 - Revue Philosophique de la France Et de l'Etranger 191 (2):262-263.
  34. Note su Ousia.Gianluigi Segalerba - 2001 - ETS.
  35. Princípio da Não-Contradição e Semântica da Predicação em Aristóteles.Lucas Angioni - 1999 - Analytica. Revista de Filosofia 4 (2):121-158.
    My object is Aristotle's discussion of principle of non-contradiction in the first stretch of Metaphysics IV.4. My main focus rests on the connections between Aristotle's discussion of the principle and some key notions of his (explicit or implied) semantics.
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  36. What is the Scope of Aristotle's Defense of the PNC?Michael J. Degnan - 1999 - Apeiron 32 (3):243 - 274.
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  37. The Coexistence of Contradictory Properties in the Same Subject According to Aristotle.Lorenzo Peña - 1999 - Apeiron 32 (3):203 - 229.
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  38. Łukasiewicz on the Principle of Contradiction.Venanzio Raspa - 1999 - Journal of Philosophical Research 24:57-112.
    Łukasiewicz distinguishes three formulations of the principle of contradiction in Aristotle’s works: ontological, logical, and psychological. The first two formulations are equivalent though not synonymous, but neither of them is equivalent to the psychological one, which expresses not a principle but only an empirical law. Furthermore, the principle of contradiction is neither a simple and ultimate law nor is it necessary for conducting an inference, because the syllogism is independent of it. The further explanation of this concept leads Łukasiewicz to (...)
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  39. The Scope of Non-Contradiction: A Note on Aristotle's 'Elenctic' Proof in "Metaphysics" Γ 4.M. V. Wedin - 1999 - Apeiron 32 (3):231-242.
  40. Aristotle’s Defence of the Principle of Non-Contradiction.Fernando Inciarte - 1994 - Archiv für Geschichte der Philosophie 76 (2):129-150.
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  41. Pragmatyczno-logiczna zasada sprzeczności. W obronie Arystotelesa.Józef Andrzej Stuchliński - 1994 - Filozofia Nauki 1.
    Jan Łukasiewicz distinguished three various formulations of the law of contradiction in Aristotle's considerations concerning axiomatic foundations of philosophia prima in the book Γ of Methaphysics. Łukasiewicz referred to these formulations as „ontological”, „logical”, and „psychological”, respectively. The author focuses his attention on the last of them, namely to the so called psychological approach. He finds this approach to be an inadequate interpretation of Aristotle's views and tries to show that the most appropriate interpretation is pragmatic-logical.
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  42. The Demonstration by Refutation of the Principle of Non-Contradiction in Aristotle's Metaphysics, Book iv,«.T. De Praetere - 1993 - Logique Et Analyse 36:343-358.
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  43. Variações sobre o de Interpretatione, de Aristóteles.Joaquim Coelho Rosa - 1990 - Revista Portuguesa de Filosofia 46 (3):379 - 390.
    O princípio ontológico por excelência é o princípio chamado de não--contradição. Tal princípio é formulado por Aristóteles em termos modais: ser é a exclusão da impossibilidade. Mas isso implica a posterioridade da impossibilidade relativamente à sua exclusão. /// Le premier principe ontologique est le principe de non-contradiction. Aristote le formule selon la modalité: être exclut l'impossibilité. Ceci entraîne que l'impossibilité soit postérieure à son exclusion. /// The ontological principle "par excellence" is the principle of noncontradiction. This principle is formulated by (...)
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  44. Aristotle’s Investigation of a Basic Logical Principle.Alan Code - 1986 - Canadian Journal of Philosophy 16 (3):341-357.
    Aristotle shares with Plato the attitude that the world, ‘the all,’ is a kosmos, a well-ordered and beautiful whole which, as such, can be rendered intelligible, or understood, by the intellect. One understands things, generally speaking, by tracing them back to their sources, origins or principles and causes or explanatory factors, and seeing in what manner they are related to these principles. We know, or understand, a thing when we grasp ‘the why’ or cause. Consequently, understanding is systematic. Some things (...)
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  45. Aristotle on the Principle of Non-Contradiction.S. Marc Cohen - 1986 - Canadian Journal of Philosophy 16 (3):359-370.
    Critical discussion of Alan Code's paper "Aristotle's Investigation of a Basic Logical Principle: Which Science Investigates the Principle of Non-Contradiction?".
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  46. A Note on Aristotle’s Principle of Non-Contradiction.Montgomery Furth - 1986 - Canadian Journal of Philosophy 16 (3):371-381.
    In what follows I will say little if anything about the animadversions vis-à-vis Irwin and Lukasiewicz and Owen, because there is so much of such greater interest in what Code has told us about Aristotle, the great preponderance of which, in my opinion, is true. I will review some of this truth, specify one place where I have trouble reconciling his account with the evidence, and then try to give a better account that I think is entirely compatible with the (...)
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  47. Aristotle on the Extension of Non-Contradiction.Edward Halper - 1984 - History of Philosophy Quarterly 1 (4):369 - 380.
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  48. Psychological and Metaphysical Dimensions of Non-Contradiction in Aristotle.Thomas V. Upton - 1982 - Review of Metaphysics 36 (3):591 - 606.
    RECENT attempts to explain and justify Aristotle's principle of non-contradiction have focused to a great extent on the dialectical dimension of Aristotle's account. For example, T. Irwin maintains that Aristotle justifies the PNC by arguing that there is a sub-set of dialectical opinions which no one can rationally give up. J. Lear supports the importance of the dialectical dimension by summarizing Aristotle's defense of the PNC as follows: The opponent of the PNC tries to argue dialectically that one should not (...)
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  49. (1 other version)Critical Notice of R.M. Dancy, Sense and Contradiction: A Study in Aristotle. [REVIEW]Richard Bosley - 1979 - Canadian Journal of Philosophy 9 (4):733-738.
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  50. On the Principle of Contradiction in Aristotle.Jan Lukasiewicz & Vernon Wedin - 1971 - Review of Metaphysics 24 (3):485 - 509.