Results for 'Bivalence'

34 found
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  1. Wright on Borderline Cases and Bivalence.Hamidreza Mohammadi - manuscript
    The aim of this paper is, firstly to explain Crispin Wright’s quandary view of vagueness, his intuitionistic response to sorites and the relation of borderline cases and bivalence, and, secondly assess the objections to his ideas.
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  2. Future Contingents Are All False! On Behalf of a Russellian Open Future.Patrick Todd - 2016 - Mind 125 (499):775-798.
    There is a familiar debate between Russell and Strawson concerning bivalence and ‘the present King of France’. According to the Strawsonian view, ‘The present King of France is bald’ is neither true nor false, whereas, on the Russellian view, that proposition is simply false. In this paper, I develop what I take to be a crucial connection between this debate and a different domain where bivalence has been at stake: future contingents. On the familiar ‘Aristotelian’ view, future contingent (...)
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  3. Cognitive Expressivism, Faultless Disagreement, and Absolute but Non-Objective Truth.Stephen J. Barker - 2010 - Proceedings of the Aristotelian Society 110 (2pt2):183-199.
    I offer a new theory of faultless disagreement, according to which truth is absolute (non-relative) but can still be non-objective. What's relative is truth-aptness: a sentence like ‘Vegemite is tasty’ (V) can be truth-accessible and bivalent in one context but not in another. Within a context in which V fails to be bivalent, we can affirm that there is no issue of truth or falsity about V, still disputants, affirming and denying V, were not at fault, since, in their context (...)
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  4.  93
    The Problem of Future Contingents: Scoping Out a Solution.Patrick Todd - forthcoming - Synthese:1-22.
    Various philosophers have long since been attracted to the doctrine that future contingent propositions systematically fail to be true - what is sometimes called the doctrine of the open future. However, open futurists have always struggled to articulate how their view interacts with standard principles of classical logic - most notably, with the Law of Excluded Middle (LEM). For consider the following two claims: (a) Trump will be impeached tomorrow; (b) Trump will not be impeached tomorrow. According to the kind (...)
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  5. Giustificazionismo e passato.Pietro Salis - 2015 - In P. L. Lecis, V. Busacchi & P. Salis (eds.), Realtà, Verità, Rappresentazione. FrancoAngeli. pp. 227-46.
    La realtà del passato rappresenta uno dei principali problemi riguardanti la semantica giustificazionista proposta da Michael Dummett. L’antirealismo tipico di questa prospettiva determina una concezione del passato piuttosto controintuitiva secondo cui esso «cessa di esistere» quando non lascia tracce e testimonianze. In Truth and the Past, Dummett è tornato sulla questione abbandonando l’antirealismo sul passato con l’obiettivo di evitare questa concezione. Questa svolta rappresenta un inedito spostamento in direzione del realismo, limitato tuttavia dal netto rifiuto di aderire ad una nozione (...)
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  6. Vagueza.Ricardo Santos - 2015 - Compêndio Em Linha de Problemas de Filosofia Analítica.
    Most words in natural language are vague, that is to say, they lack sharp boundaries and, hence, they have (actual or potential) borderline cases, where the word in question neither definitely applies nor definitely fails to apply. Vagueness gives rise to paradoxes, the best known of which is the sorites (concerned with how many grains of sand are needed to make a heap). Besides offering a solution to such paradoxes, a theory of vagueness should systematically describe how the truth conditions (...)
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  7. Valuations.Jean-Louis Lenard - manuscript
    Is logic empirical? Is logic to be found in the world? Or is logic rather a convention, a product of conventions, part of the many rules that regulate the language game? Answers fall in either camp. We like the linguistic answer. In this paper, we want to analyze how a linguistic community would tackle the problem of developing a logic and show how the linguistic conventions adopted by the community determine the properties of the local logic. Then show how to (...)
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  8.  23
    (Master Thesis) Of Madness and Many-Valuedness: An Investigation Into Suszko's Thesis.Sanderson Molick - 2015 - Dissertation, UFRN
    Suszko’s Thesis is a philosophical claim regarding the nature of many-valuedness. It was formulated by the Polish logician Roman Suszko during the middle 70s and states the existence of “only but two truth values”. The thesis is a reaction against the notion of many-valuedness conceived by Jan Łukasiewicz. Reputed as one of the modern founders of many-valued logics, Łukasiewicz considered a third undeter- mined value in addition to the traditional Fregean values of Truth and Falsehood. For Łukasiewicz, his third value (...)
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  9. Against the Russellian Open Future.Anders J. Schoubye & Brian Rabern - 2017 - Mind 126 (504): 1217–1237.
    Todd (2016) proposes an analysis of future-directed sentences, in particular sentences of the form 'will(φ)', that is based on the classic Russellian analysis of definite descriptions. Todd's analysis is supposed to vindicate the claim that the future is metaphysically open while retaining a simple Ockhamist semantics of future contingents and the principles of classical logic, i.e. bivalence and the law of excluded middle. Consequently, an open futurist can straightforwardly retain classical logic without appeal to supervaluations, determinacy operators, or any (...)
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  10. Against Rea on Presentism and Fatalism.Andrew Moon - 2008 - Proceedings of the Xxii World Congress of Philosophy 15:159-166.
    T In [Rea 2006], Michael Rea presents an argument that presentism is incompatible with a libertarian view of human freedom and the unrestricted principle of bivalence. I aim to show that Rea’s argument fails. The outline of my paper is as follows. In Part I, I briefly explain the above three views and I present Rea’sargument. In Part II, I argue that one of the premises of the argument is unjustified.
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  11. Gestalt Shifts in the Liar Or Why KT4M Is the Logic of Semantic Modalities.Susanne Bobzien - 2017 - In Bradley Armour-Garb (ed.), Reflections on the Liar. Oxford University. pp. 71-113.
    ABSTRACT: This chapter offers a revenge-free solution to the liar paradox (at the centre of which is the notion of Gestalt shift) and presents a formal representation of truth in, or for, a natural language like English, which proposes to show both why -- and how -- truth is coherent and how it appears to be incoherent, while preserving classical logic and most principles that some philosophers have taken to be central to the concept of truth and our use of (...)
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  12. The Truth About the Future.Jacek Wawer - 2014 - Erkenntnis 79 (S3):365-401.
    There is a long-standing disagreement among Branching-Time theorists. Even though they all believe that the branching representation accurately grasps the idea that the future, contrary to the past, is open, they argue whether this representation is compatible with the claim that one among many possible futures is distinguished—the single future that will come to be. This disagreement is paralleled in an argument about the bivalence of future contingents. The single, privileged future is often called the Thin Red Line. I (...)
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  13.  63
    Realism and Theism : A Match Made in Heaven?Simon Hewitt - forthcoming - European Journal for Philosophy of Religion.
    There is no interesting entailment either way between theism and various forms of realism. Taking its cue from Dummett's characterisation of realism and his discussion of it with respect to theistic belief, this paper argues both that theism does not follow from realism, and that God cannot be appealed to in order to secure bivalence for an otherwise indeterminate subject matter. In both cases, significant appeal is made to the position that God is not a language user, which in (...)
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  14. If It's Clear, Then It's Clear That It's Clear, or is It? Higher-Order Vagueness and the S4 Axiom.Susanne Bobzien - 2012 - In B. Morison K. Ierodiakonou (ed.), Episteme, etc. OUP UK.
    The purpose of this paper is to challenge some widespread assumptions about the role of the modal axiom 4 in a theory of vagueness. In the context of vagueness, axiom 4 usually appears as the principle ‘If it is clear (determinate, definite) that A, then it is clear (determinate, definite) that it is clear (determinate, definite) that A’, or, more formally, CA → CCA. We show how in the debate over axiom 4 two different notions of clarity are in play (...)
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  15. Epistemicism and the Liar.Jamin Asay - 2015 - Synthese 192 (3):679-699.
    One well known approach to the soritical paradoxes is epistemicism, the view that propositions involving vague notions have definite truth values, though it is impossible in principle to know what they are. Recently, Paul Horwich has extended this approach to the liar paradox, arguing that the liar proposition has a truth value, though it is impossible to know which one it is. The main virtue of the epistemicist approach is that it need not reject classical logic, and in particular the (...)
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  16. Objective Truth in Matters of Taste.Mihnea Capraru - 2016 - Philosophical Studies 173 (7):1755-1777.
    In matters of personal taste, faultless disagreement occurs between people who disagree over what is tasty, fun, etc., in those cases when each of these people seems equally far from the objective truth. Faultless disagreement is often taken as evidence that truth is relative. This article aims to help us avoid the truth-relativist conclusion. The article, however, does not argue directly against relativism; instead, the article defends non-relative truth constructively, aiming to explain faultless disagreement with the resources of semantic contextualism. (...)
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  17. Vagueness : A Statistical Epistemicist Approach.Jiri Benovsky - 2011 - Teorema: International Journal of Philosophy (3):97-112.
    There are three main traditional accounts of vagueness : one takes it as a genuinely metaphysical phenomenon, one takes it as a phenomenon of ignorance, and one takes it as a linguistic or conceptual phenomenon. In this paper I first very briefly present these views, especially the epistemicist and supervaluationist strategies, and shortly point to some well-known problems that the views carry. I then examine a 'statistical epistemicist' account of vagueness that is designed to avoid precisely these problems – it (...)
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  18.  71
    The Boundary Stones of Thought: An Essay in the Philosophy of Logic, by Ian Rumfitt. [REVIEW]Peter Fritz - 2018 - Mind 127 (505):265-276.
    In his book The Boundary Stones of Thought, Ian Rumfitt considers five arguments in favour of intuitionistic logic over classical logic. Two of these arguments are based on reflections concerning the meaning of statements in general, due to Michael Dummett and John McDowell. The remaining three are more specific, concerning statements about the infinite and the infinitesimal, statements involving vague terms, and statements about sets.Rumfitt is sympathetic to the premisses of many of these arguments, and takes some of them to (...)
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  19. Co-Constructive Logic for Proofs and Refutations.James Trafford - 2014 - Studia Humana 3 (4):22-40.
    This paper considers logics which are formally dual to intuitionistic logic in order to investigate a co-constructive logic for proofs and refutations. This is philosophically motivated by a set of problems regarding the nature of constructive truth, and its relation to falsity. It is well known both that intuitionism can not deal constructively with negative information, and that defining falsity by means of intuitionistic negation leads, under widely-held assumptions, to a justification of bivalence. For example, we do not want (...)
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  20.  64
    On Partial and Paraconsistent Logics.Reinhard Muskens - 1999 - Notre Dame Journal of Formal Logic 40 (3):352-374.
    In this paper we consider the theory of predicate logics in which the principle of Bivalence or the principle of Non-Contradiction or both fail. Such logics are partial or paraconsistent or both. We consider sequent calculi for these logics and prove Model Existence. For L4, the most general logic under consideration, we also prove a version of the Craig-Lyndon Interpolation Theorem. The paper shows that many techniques used for classical predicate logic generalise to partial and paraconsistent logics once the (...)
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  21. The Open Future, Free Will and Divine Assurance: Responding to Three Common Objections to the Open View.Gregory Boyd - 2015 - European Journal for Philosophy of Religion 7 (3):207--222.
    In this essay I respond to three of the most forceful objections to the open view of the future. It is argued that a) open view advocates must deny bivalence; b) the open view offers no theodicy advantages over classical theism; and c) the open view can’t assure believers that God can work all things to the better. I argue that the first objection is premised on an inadequate assessment of future tensed propositions, the second is rooted in an (...)
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  22. Vagueness And The Sorites Paradox.Kirk Ludwig & Greg Ray - 2002 - Noûs 36 (s16):419-461.
    A sorites argument is a symptom of the vagueness of the predicate with which it is constructed. A vague predicate admits of at least one dimension of variation (and typically more than one) in its intended range along which we are at a loss when to say the predicate ceases to apply, though we start out confident that it does. It is this feature of them that the sorites arguments exploit. Exactly how is part of the subject of this paper. (...)
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  23.  86
    Minimalism About Truth: Special Issue Introduction.Joseph Ulatowski & Cory Wright - 2018 - Synthese 195 (3):927-933.
    The theme of this special issue is minimalism about truth, a conception which has attracted extensive support since the landmark publication of Paul Horwich's Truth (1990). Many well-esteemed philosophers have challenged Horwich's alethic minimalism, an especially austere version of deflationary truth theory. In part, this is at least because his brand of minimalism about truth also intersects with several different literatures: paradox, implicit definition, bivalence, normativity, propositional attitudes, properties, explanatory power, meaning and use, and so forth. Deflationist sympathizers have (...)
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  24. The Logic of the Whole Truth.Joseph S. Fulda - 1989 - Rutgers Computer and Technology Law Journal 15 (2):435-446.
    Note: The author holds the copyright, and there was no agreement, express or implied, not to use a facsimile PDF. -/- Using erotetic logic, the paper defines the "the whole truth" in a manner consistent with U.S. Supreme Court precedent. It cannot mean "the whole story," as witnesses in an adversary system are permitted /only/ to answer the questions put to them, nor are they permitted to speculate, add irrelevant material, etc. Nor can it mean not to add an admixture (...)
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  25. Stoic Trichotomies.Daniel Nolan - 2016 - Oxford Studies in Ancient Philosophy 51:207-230.
    Chrysippus often talks as if there is a third option when we might expect that two options in response to a question are exhaustive. Things are true, false or neither; equal, unequal, or neither; the same, different, or neither.. and so on. There seems to be a general pattern here that calls for a general explanation. This paper offers a general explanation of this pattern, preserving Stoic commitments to excluded middle and bivalence, arguing that Chrysippus employs this trichotomy move (...)
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  26.  11
    Truth & Transcendence: Turning the Tables on the Liar Paradox.Gila Sher - 2017 - In Bradley Armour-Garb (ed.), Reflections on the Liar. Oxford: Oxford University Press. pp. 281-306.
    Confronting the Liar Paradox is commonly viewed as a prerequisite for developing a theory of truth. In this paper I turn the tables on this traditional conception of the relation between the two. The theorist of truth need not constrain his search for a “material” theory of truth, i.e., a theory of the philosophical nature of truth, by committing himself to one solution or another to the Liar Paradox. If he focuses on the nature of truth (leaving issues of formal (...)
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  27. Implicit Comparatives and the Sorites.John-Michael Kuczynski - 2006 - History and Philosophy of Logic 27 (1):1-8.
    A person with one dollar is poor. If a person with n dollars is poor, then so is a person with n + 1 dollars. Therefore, a person with a billion dollars is poor. True premises, valid reasoning, a false a conclusion. This is an instance of the Sorites-paradox. (There are infinitely many such paradoxes. A man with an IQ of 1 is unintelligent. If a man with an IQ of n is unintelligent, so is a man with an IQ (...)
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  28.  31
    What the Epistemic Account of Vagueness Means for Legal Interpretation.Luke Hunt - 2016 - Law and Philosophy 35 (1):29-54.
    This paper explores what the epistemic account of vagueness means for theories of legal interpretation. The thesis of epistemicism is that vague statements are true or false even though it is impossible to know which. I argue that if epistemicism is accepted within the domain of the law, then the following three conditions must be satisfied: Interpretative reasoning within the law must adhere to the principle of bivalence and the law of excluded middle, interpretative reasoning within the law must (...)
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  29.  26
    Time and Tense. Unifying the Old and the New.Stamatios Gerogiorgakis - 2016 - Munich: Philosophia.
    Contents: -/- Bas C. van Fraassen, Introduction -/- Miloš Arsenijević, Avoiding Logical Determinism and Retaining the Principle of Bivalence within Temporal Modal Logic: Time as a Line-in-Drawing -/- Allan Bäck, The Reality of the Statement and the Now in Aristotle -/- Hans Burkhardt, Aristotle on Memory and Remembering and McTaggart’s A-Time and B-Time Series -/- Stamatios Gerogiorgakis, Late Ancient Paradoxes concerning Tense Revisited -/- Sonja Schierbaum, Ockham on Tense and Truth -/- Hylarie Kochiras, Newton’s Absolute Time -/- Christina Schneider, (...)
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  30. Necessity, Possibility and Determinism in Stoic Thought.Vanessa de Harven - 2016 - In Max Cresswel, Edwin Mares & Adriane Rini (eds.), Logical Modalities from Aristotle to Carnap: The Story of Necessity. Cambridge: Cambridge University Press. pp. 70-90.
    At the heart of the Stoic theory of modality is a strict commitment to bivalence, even for future contingents. A commitment to both future truth and contingency has often been thought paradoxical. This paper argues that the Stoic retreat from necessity is successful. it maintains that the Stoics recognized three distinct senses of necessity and possibility: logical, metaphysical and providential. Logical necessity consists of truths that are knowable a priori. Metaphysical necessity consists of truths that are knowable a posteriori, (...)
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  31. Peter A. Railton and the Objective Moral Realism.Maurilio Lovatti - 1999 - Per la Filosofia (45):99-109.
    Peter Railton argues for a form of moral realism which holds that moral judgments can bear truth values in a fundamental non-epistemic sense of truth; that moral properties are objective, though relational; that moral properties supervene upon natural properties, and may be reducible to them; that moral inquiry is of a piece with empirical inquiry. He also thinks that it cannot be known a priori whether bivalence holds for moral judgments, and that a rational agent may fail to have (...)
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  32.  9
    Future Contingents and Aristotle’s Fantasy.Andrea Iacona - 2007 - Critica 39 (117):45-60.
    This paper deals with the problem of future contingents, and focuses on two classical logical principles, excluded middle and bivalence. One may think that different attitudes are to be adopted towards these two principles in order to solve the problem. According to what seems to be a widely held hypothesis, excluded middle must be accepted while bivalence must be rejected. The paper goes against that line of thought. In the first place, it shows how the rejection of (...) leads to implausible consequences if excluded middle is accepted. In the second place, it addresses the question of why one should reject bivalence, and finds no satisfactory answer. /// Este artículo trata el problema de los futuros contingentes, y se enfoca en dos principios lógicos clásicos: el tercero excluido y la bivalencia. Se podría pensar que una solución del problema requiere actitudes diferentes hacia estos dos principios. Según una hipótesis que parece ampliamente compartida, el tercero excluido debe ser aceptado, mientras que la bivalencia debe ser rechazada. Este artículo argumenta en contra de esta línea de pensamiento. En primer lugar, se aborda cómo el rechazo de la bivalencia lleva a consecuencias poco plausibles si el tercero excluido es aceptado. En segundo lugar, se enfrenta la cuestión de por qué se debería rechazar la bivalencia, sin encontrar una respuesta satisfactoria. (shrink)
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  33.  47
    Gradualism and the Gradualistic Account of Luck.Gregor Flock - manuscript
    Luck has become an increasingly important factor in epistemology during recent years as either a preventor of knowledge (Pritchard 2013) or even as one of the conditions of knowledge (Zagzebski 1994, Hetherington 2013), thus begging the question of its definition. Following the probabilistic and degree-minding "new paradigm psychology of reasoning" (Evans 2012, Elqayam & Over 2012, Pfeifer & Douven 2014) and renouncing the "old paradigm" of bivalence, the first main feature of this article lies in the introduction of "gradualism" (...)
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  34.  53
    An Even Simpler Defense of the Material Implication (Draft).Matheus Silva - manuscript
    Lee Archie argued that if any truth-values are consistently assigned to a natural language conditional for which modus ponens and modus tollens are valid argument forms and affirming the consequent is invalid, this conditional will have the same truth-conditions of a material implication. This argument is simple and it requires few and relatively uncontroversial assumptions. We show that it is possible to extend Archie´s argument to three and five-valued logics and still vindicate the same conclusion. This defense is simpler because (...)
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