View topic on PhilPapers for more information
Related categories

214 found
Order:
More results on PhilPapers
1 — 50 / 214
  1. added 2020-11-29
    Subjunctive Conditionals Are Material.Matheus Silva - manuscript
    The material account claims that indicative conditionals are material. However, the conventional wisdom even among material account enthusiasts is that the material account cannot be extended to subjunctive conditionals. There are mainly three reasons that motivate this consensus: (1) the belief that if subjunctives were material, most subjunctive conditionals would be vacuously true, which is implausible; (2) its inconsistency with Adam pairs, which suggest that indicative and subjunctive conditionals have different truth conditions; and (3) the belief that it is an (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  2. added 2020-11-29
    Semantic Relativism and Logical Implication.Leonid Tarasov - forthcoming - Erkenntnis:1-21.
    Semantic relativism is the view that the truth-value of some types of statements can vary depending on factors besides possible worlds and times, without any change in their propositional content. It has grown increasingly popular as a semantic theory of several types of statements, including statements that attribute knowledge of a proposition to a subject. The ways of knowing claim is the view that perception logically implies knowledge. In my “Semantic Relativism and Ways of Knowing” I argued that a relativist (...)
    Remove from this list   Download  
    Translate
     
     
    Export citation  
     
    Bookmark  
  3. added 2020-09-29
    The Logical Web - Why Most Alternatives to the Material Account Are Ad Hoc.Matheus Silva - manuscript
    The material account of indicative conditionals states that indicative conditional sentences and the material implication have the same truth conditions. Many conditional logics are motivated by attempts to fix the counter-intuitive aspects associated with the material account. Some counter-intuitive instances of classical argumentative forms, e.g., strengthening of the antecedent, contraposition, and conditional negation, are regarded as evidence that the material account is wrong and that classical logic should be rejected in favour of a new logic system in which these argumentative (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  4. added 2020-09-25
    Rejection in Łukasiewicz's and Słupecki's Sense.Wybraniec-Skardowska Urszula - 2018 - In The Lvov-Warsaw School, Past and Present. Cham: pp. 575-597.
    The idea of rejection originated by Aristotle. The notion of rejection was introduced into formal logic by Łukasiewicz. He applied it to complete syntactic characterization of deductive systems using an axiomatic method of rejection of propositions. The paper gives not only genesis, but also development and generalization of the notion of rejection. It also emphasizes the methodological approach to biaspectual axiomatic method of characterization of deductive systems as acceptance (asserted) systems and rejection (refutation) systems, introduced by Łukasiewicz and developed by (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  5. added 2020-09-18
    Systems for Non-Reflexive Consequence.Carlo Nicolai & Lorenzo Rossi - manuscript
    Substructural logics and their application to logical and semantic paradoxes have been extensively studied, but non-reexive systems have been somewhat neglected. Here, we aim to (at least partly) ll this lacuna, by presenting a non-reexive logic and theory of naïve consequence (and truth). We also investigate the semantics and the proof-theory of the system. Finally, we develop a compositional theory of truth (and consequence) in our non-reexive framework.
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  6. added 2020-09-18
    The False Promises of Logic Textbooks - How Logic Has a Much More Limited Role Than People Usually Think.Matheus Silva - manuscript
    Philosophers will promise you the world. They advertise that we can learn with logic textbooks how to spot a valid argument by their logical form alone and that the conclusion of any valid argument is already contained in its premises. They also advertise that their textbooks contain classifications with the most basic valid argumentative forms people of flesh and blood can use in deductive matters. Think about this for a moment. These are bold statements. If these statements were true, philosophers (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  7. added 2020-09-18
    Frege and Saving Substitution.Bryan Pickel & Brian Rabern - forthcoming - Philosophical Studies.
    Goodman and Lederman (2020) argue that the traditional Fregean strategy for preserving the validity of Leibniz’s Law of substitution fails when confronted with apparent counterexamples involving proper names embedded under propositional attitude verbs. We argue, on the contrary, that the Fregean strategy succeeds and that Goodman and Lederman’s argument misfires.
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  8. added 2020-09-14
    Putting the Stars in Their Places.Shay Allen Logan - 2020 - Thought: A Journal of Philosophy 9 (3):188-197.
    This paper presents a new semantics for the weak relevant logic DW that makes the role of the infamous Routley star more explicable. Central to this rewriting is combining aspects of both the American and Australian plan for understanding negations in relevance logics.
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  9. added 2020-09-12
    Anderson And Belnap's Minimal Positive Logic With Minimal Negation.J. Mendez, F. Salto & G. Robles - 2002 - Reports on Mathematical Logic 36:117-130.
    Our question is: can we embed minimal negation in implicative logics weaker than I→? Previous results show how to define minimal negation in the positive fragment of the logic of relevance R and in contractionless intuitionistic logic. Is it possible to endow weaker positive logics with minimal negation? This paper prooves that minimal negation can be embedded in even such a weak system as Anderson and Belnap’s minimal positive logic.
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark   4 citations  
  10. added 2020-09-12
    A Natural Negation Completion of Urquhart's Many-Valued Logic C.José M. Mendez & Francisco Salto - 1998 - Journal of Philosophical Logic 27 (1):75-84.
    Etude de l'extension par la negation semi-intuitionniste de la logique positive des propositions appelee logique C, developpee par A. Urquhart afin de definir une semantique relationnelle valable pour la logique des valeurs infinies de Lukasiewicz (Lw). Evitant les axiomes de contraction et de reduction propres a la logique classique de Dummett, l'A. propose une semantique de type Routley-Meyer pour le systeme d'Urquhart (CI) en tant que celle-la ne fournit que des theories consistantes pour la completude de celui-ci.
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  11. added 2020-09-11
    Metainferential Duality.Bruno Da Ré, Federico Pailos, Damian Szmuc & Paula Teijeiro - 2020 - Journal of Applied Non-Classical Logics 30 (4):312-334.
    The aim of this article is to discuss the extent to which certain substructural logics are related through the phenomenon of duality. Roughly speaking, metainferences are inferences between collect...
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  12. added 2020-09-09
    A Simple Logical Matrix and Sequent Calculus for Parry's Logic of Analytic Implication.Damian Szmuc - forthcoming - Studia Logica.
    We provide a logical matrix semantics and a Gentzen-style sequent calculus for the first-degree entailments valid in W. T. Parry's logic of Analytic Implication. We achieve the former by introducing a logical matrix closely related to that inducing paracomplete weak Kleene logic, and the latter by presenting a calculus where the initial sequents and the left and right rules for negation are subject to linguistic constraints.
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  13. added 2020-09-02
    Restricted and Unrestricted Modus Ponens.Matheus Silva - manuscript
    In a typical modus ponens the reasoner will (a) assert that a premise materially implies a conclusion in a given world; (b) assert this premise and (c) infer the conclusion. But this restricted modus ponens has little in common with the unrestricted textbook modus ponens, since the latter claims that there are no possible worlds where: (a’) a premise materially implies a conclusion, (b’) that premise is true and (c’) the conclusion is false. It is clear that this textbook modus (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  14. added 2020-09-01
    Two Degrees of Implication.Matheus Silva - manuscript
    In a material implication the relation of logical consequence is restricted to a world parameter, whereas in a formal implication the relation of logical consequence extends over many worlds. One could infer from this pattern that the material implication should be reduced to formal implication since it is just a restricted version of it, or, inversely, that formal implication should be reduced to material implication since it is an unrestricted version of it. But both reductionist claims would betray a superficial (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  15. added 2020-09-01
    'If-Then' as a Version of 'Implies'.Matheus Silva - manuscript
    Russell’s role in the controversy about the paradoxes of material implication is usually presented as a tale of how even the greatest minds can fall prey of basic conceptual confusions. Quine accused him of making a silly mistake in Principia Mathematica. He interpreted ‘if-then’ as a version of ‘implies’ and called it material implication. Quine’s accusation is that this decision involved a use-mention fallacy because the antecedent and consequent of ‘if-then’ are used instead of being mentioned as the premise and (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  16. added 2020-09-01
    A Contextualist Defence of the Material Account of Indicative Conditionals.Matheus Silva - manuscript
    The material account of indicative conditionals faces a legion of counterexamples that are the bread and butter in any entry about the subject. For this reason, the material account is widely unpopular among conditional experts. I will argue that this consensus was not built on solid foundations, since these counterexamples are contextual fallacies. They ignore a basic tenet of semantics according to which when evaluating arguments for validity we need to maintain the context constant, otherwise any argumentative form can be (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  17. added 2020-09-01
    An Even Simpler Defense of Material Implication.Matheus Silva - manuscript
    Lee Archie argued that if any truth values are consistently assigned to a natural language conditional to which Modus Ponens and Modus Tollens are valid argumentative forms, and affirming the consequent is an invalid argumentative form, this conditional would have the same truth conditions than a material implication. This argument is simple and it requires few assumptions that are relatively uncontroversial. We show that it is possible to extend Archie’s argument to three-valued logics and five-valued logics and vindicate a slightly (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  18. added 2020-09-01
    Conditional Sentences as Implication Statements: A New Approach.Matheus Silva - manuscript
    It is usually accepted that conditional sentences are sui generis and enigmatic. In this paper I try to make them more accessible by interpreting them as claims to relations of implication restricted to a parameter world. This interpretation revives an old idea that fell into disuse, but in its improved version leads to refreshing solutions to known problems in conditional theory. The many benefits of this approach are evidenced by its insightful explanation of some apparent counter-examples to classical argumentative forms (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  19. added 2020-09-01
    The Big Four - Their Interdependence and Limitations.Matheus Silva - manuscript
    Four intuitions are recurrent and influential in theories about conditionals: the Ramsey’s test, the Adams’ Thesis, the Equation, and the robustness requirement. For simplicity’s sake, I call these intuitions ‘the big four’. My aim is to show that: (1) the big four are interdependent; (2) they express our inferential dispositions to employ a conditional on a modus ponens; (3) the disposition to employ conditionals on a modus ponens doesn’t have the epistemic significance that is usually attributed to it, since the (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  20. added 2020-09-01
    The Material Account of Conditionals and the Clash Between Intensional and Extensional Evidence.Matheus Silva - manuscript
    Intensional evidence is any reason to accept a proposition that is not the truth values of the proposition accepted or, if it is a complex proposition, its propositional contents. Extensional evidence is non-intensional evidence. Someone can accept a complex proposition, but deny its logical consequences in two circumstances: (1) when her acceptance is based on intensional evidence, while the logical consequences of the proposition presuppose the acceptance of extensional evidence, e.g., she can refuse the logical consequence of a proposition she (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  21. added 2020-09-01
    In Defense of Hypothetical Syllogism.Matheus Silva - manuscript
    Moti Mizrahi (2013) presented a putative counterexample to Hypothetical Syllogism (HS) for indicative conditionals aiming to succeed where previous attempts to refute HS have failed. Lee Walters (2014a) objected that Mizrahi’s putative counterexample results from an inadequate analysis of conditionals with embedded modals, but advanced new putative counterexamples to HS for subjunctive conditionals that are supposed to bypass this issue (Walters, 2014a; 2014b). It is argued that Walter’s analysis of embedded modals is unnecessary to prevent Mizrahi’s putative counterexample, since the (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  22. added 2020-09-01
    The Inextricable Link Between Conditionals and Logical Consequence.Matheus Silva - manuscript
    There is a profound, but frequently ignored, relationship between the classical conception of logical consequence and the material implication. The first repeats the patterns of the latter, but with a wider modal reach. This relationship suggests that there should be also a connection between the notion of logical consequence and the conditional connective of any given logical system. This implies, among other things, that it is incoherent to propose alternatives to the material implication while maintaining the classical conception of logical (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  23. added 2020-09-01
    Indicative Conditionals Are Material - Expanding the Survey.Matheus Martins Silva - manuscript
    The material account of indicative conditionals states that indicative conditional sentences and the material implication have the same truth conditions. Recently, Adam Rieger has carried out a survey of arguments in favour of the material account. In this paper, I extend this survey by presenting yet more arguments for the material account. On top of presenting more arguments, I also want to argue that it is plausible to extend the material account to subjunctive conditionals. For that reason, the arguments here (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  24. added 2020-09-01
    In Defense of Brogaard-Salerno Stricture.Matheus Silva - 2017 - The Reasoner 11 (7):42.
    Brogaard and Salerno (2008) argued that counter-examples to contraposition, strengthening the antecedent, and hypothetical syllogism involving subjunctive conditionals only seem to work because they involve a contextual fallacy where the context assumed in the premise(s) is illicitly shifted in the conclusion. To avoid such counter-examples they have proposed that the context must remain fixed when evaluating an argument for validity. That is the Brogaard-Salerno Stricture. Tristan Haze (2016), however, has recently objected that intuitively valid argumentative forms such as conjunction introduction (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark   1 citation  
  25. added 2020-09-01
    The Truth Functional Hypothesis Does Not Imply the Liars Paradox.M. Martins Silva - 2017 - Unisinos Journal of Philosophy 17 (3):1-2.
    The truth-functional hypothesis states that indicative conditional sentences and the material implication have the same truth conditions. Haze (2011) has rejected this hypothesis. He claims that a self-referential conditional, coupled with a plausible assumption about its truth-values and the assumption that the truth-functional hypothesis is true, lead to a liar’s paradox. Given that neither the self-referential conditional nor the assumption about its truth-values are problematic, the culprit of the paradox must be the truth-functional hypothesis. Therefore, we should reject it. In (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  26. added 2020-08-29
    Is Classical Logic Monotonic?Matheus Silva - manuscript
    It is usually accepted that one of the properties of classical logic is monotonicity, which states that the validity of implication is not affected by the addition of new premises. In this piece, I will argue that this common notion is unjustified since it is motivated by a category mistake. The notion of monotonicity is primarily epistemic in character and can’t be meaningfully attributed to a system. This is acutely clear in the contrast of monotonicity with non-monotonicity, which we tend (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  27. added 2020-08-24
    ¿Es posible entender la determinación de un concepto como una relación de orden en la lógica dialéctica de Hegel?Eduardo Dib - 2020 - Zenodo Profile by Eduardo Dib.
    By the beginning of the 19th century Hegel's dialectic turn contradiction (conceived as unity of a concept with its determined negation) into distinguished inference. In the course of 20th century a family of systems known as "paraconsistent" formalized dialectical logic according to the contemporary paradigm of inference, oriented to truth-preserving, and not powered anymore solely by contradiction. In this way, nevertheless, Hegel's idea of logic as unfolding of concepts ordered by degree of "determination" reached at every step of the process, (...)
    Remove from this list   Download  
    Translate
     
     
    Export citation  
     
    Bookmark  
  28. added 2020-08-19
    Liar Sentences Are Truth-Apt.Matheus Silva - manuscript
    Lycan (2010: 617) maintained that if we know about a deductive argument P1, P2…, ∴C that it is valid, this shows that a set containing the premises and the negation of conclusion is internally inconsistent {P1, P2,…, ~C}. Using a similar reasoning, we should conclude that an invalid deductive argument shows that a set containing the premises and the negation of conclusion is internally consistent. This implies that premises and conclusion of any deductive argument are truth-apt. Since it is uncontroversial (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  29. added 2020-08-19
    Modus Ponens, Conditional-Circularity and Material Implication.Matheus Silva - manuscript
    The modus ponens can be interpreted as an answer to a circularity charge, but this strategy is only feasible if the additional conditional premise is interpreted as a claim to a material implication. Here’s how it works.
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  30. added 2020-08-15
    Looking for the Missing Antecedent.Matheus Silva - manuscript
    The conclusion of a valid deductive argument is contained in its premises, but the deductive argument can still be informative if the arguer is trying to find the missing premises that together with the accepted premises will ensure the truth of the conclusion. Necessarily true conditionals have a deductive-like character so their consequents are contained in their antecedents. These conditionals can be informative, so we need to find the missing antecedent that makes the connection between the antecedent and the consequent. (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  31. added 2020-08-10
    Making Sense of Deduction.Matheus Silva - manuscript
    An argument is deductive when the arguer believes the truth of the premises necessitates the truth of the conclusion. A deductive argument is valid when the arguer’s claim is true, i.e., when there are no possible worlds whether the premises are true and the conclusion is false. But in order to evaluate this claim in an accurate manner we need to consider three qualifications that have been repeatedly ignored in the literature, namely, consistency in the attribution of truth values, world (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  32. added 2020-08-04
    Meaning-Preserving Contraposition of Conditionals.Gilberto Gomes - 2019 - Journal of Pragmatics 1 (152):46-60.
    It is argued that contraposition is valid for a class of natural language conditionals, if some modifications are allowed to preserve the meaning of the original conditional. In many cases, implicit temporal indices must be considered, making a change in verb tense necessary. A suitable contrapositive for implicative counterfactual conditionals can also usually be found. In some cases, the addition of certain words is necessary to preserve meaning that is present in the original sentence and would be lost or changed (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark   1 citation  
  33. added 2020-07-23
    When It is Not Logically Necessary for a Necessary Condition of Value to Be Valuable.Michael Kowalik - manuscript
    The premise that it is logically necessary for a necessary condition of value to be valuable is sometimes used in metaethics in support of the claim that agency, or some constitutive condition of agency or action, has value for all agents. I focus on the most recent application of this premise by Caroline T. Arruda and argue that the premise is false. Despite this defect the relevant evaluative step could still work just in case of agency if an additional condition (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  34. added 2020-07-22
    Limits of Abductivism About Logic.Ulf Hlobil - forthcoming - Philosophy and Phenomenological Research.
    I argue against abductivism about logic, which is the view that rational theory choice in logic happens by abduction. Abduction cannot serve as a neutral arbiter in many foundational disputes in logic because, in order to use abduction, one must first identify the relevant data. Which data one deems relevant depends on what I call one's conception of logic. One's conception of logic is, however, not independent of one's views regarding many of the foundational disputes that one may hope to (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  35. added 2020-07-07
    The Dialogical Entailment Task.Niels Skovgaard-Olsen - 2019 - Cognition:104010.
    In this paper, a critical discussion is made of the role of entailments in the so-called New Paradigm of psychology of reasoning based on Bayesian models of rationality (Elqayam & Over, 2013). It is argued that assessments of probabilistic coherence cannot stand on their own, but that they need to be integrated with empirical studies of intuitive entailment judgments. This need is motivated not just by the requirements of probability theory itself, but also by a need to enhance the interdisciplinary (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark   2 citations  
  36. added 2020-06-27
    Defining Gödel Incompleteness Away.P. Olcott - manuscript
    We can simply define Gödel 1931 Incompleteness away by redefining the meaning of the standard definition of Incompleteness: A theory T is incomplete if and only if there is some sentence φ such that (T ⊬ φ) and (T ⊬ ¬φ). This definition construes the existence of self-contradictory expressions in a formal system as proof that this formal system is incomplete because self-contradictory expressions are neither provable nor disprovable in this formal system. Since self-contradictory expressions are neither provable nor disprovable (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  37. added 2020-06-16
    What is Wrong with Classical Negation?Nils Kurbis - 2015 - Grazer Philosophische Studien 92 (1):51-86.
    The focus of this paper are Dummett's meaning-theoretical arguments against classical logic based on consideration about the meaning of negation. Using Dummettian principles, I shall outline three such arguments, of increasing strength, and show that they are unsuccessful by giving responses to each argument on behalf of the classical logician. What is crucial is that in responding to these arguments a classicist need not challenge any of the basic assumptions of Dummett's outlook on the theory of meaning. In particular, I (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark   7 citations  
  38. added 2020-05-26
    Paracomplete Logics Which Are Dual to the Paraconsistent Logics L3A and L3B.Alejandro Hernández-Tello, Verónica Borja-Macı́as & Marcelo E. Coniglio - 2020 - LANMR 2019: Proceedings of the 12th Latin American Workshop on Logic/Languages, Algorithms and New Methods of Reasoning.
    In 2016 Beziau, introduce a more restricted concept of paraconsistency, namely the genuine paraconsistency. He calls genuine paraconsistent logic those logic rejecting φ, ¬φ |- ψ and |- ¬(φ ∧ ¬φ). In that paper the author analyzes, among the three-valued logics, which of these logics satisfy this property. If we consider multiple-conclusion consequence relations, the dual properties of those above mentioned are: |- φ, ¬φ, and ¬(ψ ∨ ¬ψ) |- . We call genuine paracomplete logics those rejecting the mentioned properties. (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  39. added 2020-04-28
    The Significance of Evidence-Based Reasoning for Mathematics, Mathematics Education, Philosophy and the Natural Sciences.Bhupinder Singh Anand - manuscript
    In this multi-disciplinary investigation we show how an evidence-based perspective of quantification---in terms of algorithmic verifiability and algorithmic computability---admits evidence-based definitions of well-definedness and effective computability, which yield two unarguably constructive interpretations of the first-order Peano Arithmetic PA---over the structure N of the natural numbers---that are complementary, not contradictory. The first yields the weak, standard, interpretation of PA over N, which is well-defined with respect to assignments of algorithmically verifiable Tarskian truth values to the formulas of PA under the interpretation. (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  40. added 2020-04-11
    A Classification System for Argumentation Schemes.Douglas Walton & Fabrizio Macagno - 2016 - Argument and Computation 6 (3):219-245.
    This paper explains the importance of classifying argumentation schemes, and outlines how schemes are being used in current research in artificial intelligence and computational linguistics on argument mining. It provides a survey of the literature on scheme classification. What are so far generally taken to represent a set of the most widely useful defeasible argumentation schemes are surveyed and explained systematically, including some that are difficult to classify. A new classification system covering these centrally important schemes is built.
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark   4 citations  
  41. added 2020-03-28
    Refuting Tarski and Gödel with a Sound Deductive Formalism.P. Olcott - manuscript
    The conventional notion of a formal system is adapted to conform to the sound deductive inference model operating on finite strings. Finite strings stipulated to have the semantic value of Boolean true provide the sound deductive premises. Truth preserving finite string transformation rules provide the valid deductive inference. Sound deductive conclusions are the result of these finite string transformation rules.
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  42. added 2020-03-24
    Rivalry, Normativity, and the Collapse of Logical Pluralism.Erik Stei - 2020 - Inquiry: An Interdisciplinary Journal of Philosophy 63 (3-4):411-432.
    Logical pluralism is the view that there is more than one correct logic. This very general characterization gives rise to a whole family of positions. I argue that not all of them are stable. The main argument in the paper is inspired by considerations known as the “collapse problem”, and it aims at the most popular form of logical pluralism advocated by JC Beall and Greg Restall. I argue that there is a more general argument available that challenges all variants (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark   8 citations  
  43. added 2020-01-26
    A Counterexample to Modus Ponenses.Matthew Mandelkern - 2020 - Journal of Philosophy 117 (6):315-331.
    McGee argued that modus ponens was invalid for the natural language conditional ‘If…then…’. Many subsequent responses have argued that, while McGee’s examples show that modus ponens fails to preserve truth, they do not show that modus ponens fails to preserve rational full acceptance, and thus modus ponens may still be valid in the latter informational sense. I show that when we turn our attention from indicative conditionals to subjunctive conditionals, we find that modus ponens does not preserve either truth or (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  44. added 2020-01-20
    Knowledge of Logical Generality and the Possibility of Deductive Reasoning.Corine Besson - 2019 - In Timothy Chan & Anders Nes (eds.), Inference and consciousness. Routledge Studies in Contemporary Philosophy. New York, USA: Routledge. pp. 172-196.
    I address a type of circularity threat that arises for the view that we employ general basic logical principles in deductive reasoning. This type of threat has been used to argue that whatever knowing such principles is, it cannot be a fully cognitive or propositional state, otherwise deductive reasoning would not be possible. I look at two versions of the circularity threat and answer them in a way that both challenges the view that we need to apply general logical principles (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark   1 citation  
  45. added 2020-01-15
    Expressing Validity: Towards a Self-Sufficient Inferentialism.Ulf Hlobil - 2020 - In Martin Blicha & Igor Sedlár (eds.), The Logica Yearbook 2019. London: College Publications. pp. 67-82.
    For semantic inferentialists, the basic semantic concept is validity. An inferentialist theory of meaning should offer an account of the meaning of "valid." If one tries to add a validity predicate to one's object language, however, one runs into problems like the v-Curry paradox. In previous work, I presented a validity predicate for a non-transitive logic that can adequately capture its own meta-inferences. Unfortunately, in that system, one cannot show of any inference that it is invalid. Here I extend the (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  46. added 2020-01-11
    Deep Fried Logic.Shay Allen Logan - forthcoming - Erkenntnis:1-30.
    There is a natural story about what logic is that sees it as tied up with two operations: a ‘throw things into a bag’ operation and a ‘closure’ operation. In a pair of recent papers, Jc Beall has fleshed out the account of logic this leaves us with in more detail. Using Beall’s exposition as a guide, this paper points out some problems with taking the second operation to be closure in the usual sense. After pointing out these problems, I (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  47. added 2020-01-11
    The Accident of Logical Constants.Tristan Grøtvedt Haze - 2020 - Thought: A Journal of Philosophy 9 (1):34-42.
    Work on the nature and scope of formal logic has focused unduly on the distinction between logical and extra-logical vocabulary; which argument forms a logical theory countenances depends not only on its stock of logical terms, but also on its range of grammatical categories and modes of composition. Furthermore, there is a sense in which logical terms are unnecessary. Alexandra Zinke has recently pointed out that propositional logic can be done without logical terms. By defining a logical-term-free language with the (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  48. added 2019-12-30
    Review of John Woods, Truth in Fiction: Rethinking its Logic. [REVIEW]Gilbert Plumer - 2020 - Informal Logic 40 (1):147-156.
    This article reviews John Wood’s Truth in Fiction: Rethinking its Logic.
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  49. added 2019-12-20
    Commitment Problems in the Naive Theory of Belief.Robert Williams - forthcoming - In Dirk Kindermann, Peter van Elswyk & Andy Egan (eds.), Unstructured Content. Oxford University Press.
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
  50. added 2019-12-16
    The Many-Property Problem is Your Problem, Too.Justin D’Ambrosio - forthcoming - Philosophical Studies:1-22.
    The many-property problem has traditionally been taken to show that the adverbial theory of perception is untenable. This paper first shows that several widely accepted views concerning the nature of perception---including both representational and non-representational views---likewise face the many-property problem. It then presents a solution to the many-property problem for these views, but goes on to show how this solution can be adapted to provide a novel, fully compositional solution to the many-property problem for adverbialism. Thus, with respect to the (...)
    Remove from this list   Download  
     
    Export citation  
     
    Bookmark  
1 — 50 / 214