Results for 'impossible worlds models'

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  1.  40
    An Algorithmic Impossible-Worlds Model of Belief and Knowledge.Zeynep Soysal - forthcoming - Review of Symbolic Logic:1-25.
    In this paper, I develop an algorithmic impossible-worlds model of belief and knowledge that provides a middle ground between models that entail that everyone is logically omniscient and those that are compatible with even the most egregious kinds of logical incompetence. In outline, the model entails that an agent believes (knows) φ just in case she can easily (and correctly) compute that φ is true and thus has the capacity to make her actions depend on whether φ. (...)
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  2. Impossible Worlds.Franz Berto & Mark Jago - 2013 - Oxford: Oxford University Press.
    We need to understand the impossible. Francesco Berto and Mark Jago start by considering what the concepts of meaning, information, knowledge, belief, fiction, conditionality, and counterfactual supposition have in common. They are all concepts which divide the world up more finely than logic does. Logically equivalent sentences may carry different meanings and information and may differ in how they're believed. Fictions can be inconsistent yet meaningful. We can suppose impossible things without collapsing into total incoherence. Yet for the (...)
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  3. Impossible Worlds and the Logic of Imagination.Francesco Berto - 2017 - Erkenntnis 82 (6):1277-1297.
    I want to model a finite, fallible cognitive agent who imagines that p in the sense of mentally representing a scenario—a configuration of objects and properties—correctly described by p. I propose to capture imagination, so understood, via variably strict world quantifiers, in a modal framework including both possible and so-called impossible worlds. The latter secure lack of classical logical closure for the relevant mental states, while the variability of strictness captures how the agent imports information from actuality in (...)
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  4. Impossible worlds and logical omniscience: an impossibility result.Jens Christian Bjerring - 2013 - Synthese 190 (13):2505-2524.
    In this paper, I investigate whether we can use a world-involving framework to model the epistemic states of non-ideal agents. The standard possible-world framework falters in this respect because of a commitment to logical omniscience. A familiar attempt to overcome this problem centers around the use of impossible worlds where the truths of logic can be false. As we shall see, if we admit impossible worlds where “anything goes” in modal space, it is easy to model (...)
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  5. Impossible Worlds.Mark Jago - 2013 - Noûs 47 (3):713-728.
    Impossible worlds are representations of impossible things and impossible happenings. They earn their keep in a semantic or metaphysical theory if they do the right theoretical work for us. As it happens, a worlds-based account provides the best philosophical story about semantic content, knowledge and belief states, cognitive significance and cognitive information, and informative deductive reasoning. A worlds-based story may also provide the best semantics for counterfactuals. But to function well, all these accounts need (...)
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  6. Truth in Fiction, Impossible Worlds, and Belief Revision.Francesco Berto & Christopher Badura - 2019 - Australasian Journal of Philosophy 97 (1):178-193.
    We present a theory of truth in fiction that improves on Lewis's [1978] ‘Analysis 2’ in two ways. First, we expand Lewis's possible worlds apparatus by adding non-normal or impossible worlds. Second, we model truth in fiction as belief revision via ideas from dynamic epistemic logic. We explain the major objections raised against Lewis's original view and show that our theory overcomes them.
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  7. Impossible worlds and partial belief.Edward Elliott - 2019 - Synthese 196 (8):3433-3458.
    One response to the problem of logical omniscience in standard possible worlds models of belief is to extend the space of worlds so as to include impossible worlds. It is natural to think that essentially the same strategy can be applied to probabilistic models of partial belief, for which parallel problems also arise. In this paper, I note a difficulty with the inclusion of impossible worlds into probabilistic models. Under weak assumptions (...)
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  8. Who's Afraid of Impossible Worlds?Edwin D. Mares - 1997 - Notre Dame Journal of Formal Logic 38 (4):516-526.
    A theory of ersatz impossible worlds is developed to deal with the problem of counterpossible conditionals. Using only tools standardly in the toolbox of possible worlds theorists, it is shown that we can construct a model for counterpossibles. This model is a natural extension of Lewis's semantics for counterfactuals, but instead of using classical logic as its base, it uses the logic LP.
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  9.  31
    Living in an Impossible World: Real-izing the Consequences of Intransitive Trust. [REVIEW]Bruce Christianson - 2013 - Philosophy and Technology 26 (4):411-429.
    Many accounts of online trust are based upon mechanisms for building reputation. Trust is portrayed as desirable, and handing off trust is easier if trust is modelled to be transitive. But in the analysis of cyber-security protocols, trust is usually used as a substitute for certain knowledge: it follows that if there is no residual risk, then there is no need for trust. On this grimmer understanding, the less that users are required to trust, the better. Involuntary transitivity of trust (...)
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  10.  99
    Dialetheism and the Impossibility of the World.Ben Martin - 2015 - Australasian Journal of Philosophy 93 (1):61-75.
    This paper first offers a standard modal extension of dialetheic logics that respect the normal semantics for negation and conjunction, in an attempt to adequately model absolutism, the thesis that there are true contradictions at metaphysically possible worlds. It is shown, however, that the modal extension has unsavoury consequences for both absolutism and dialetheism. While the logic commits the absolutist to dialetheism, it commits the dialetheist to the impossibility of the actual world. A new modal logic AV is then (...)
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  11. Two Kinds of Logical Impossibility.Alexander Sandgren & Koji Tanaka - 2020 - Noûs 54 (4):795-806.
    In this paper, we argue that a distinction ought to be drawn between two ways in which a given world might be logically impossible. First, a world w might be impossible because the laws that hold at w are different from those that hold at some other world (say the actual world). Second, a world w might be impossible because the laws of logic that hold in some world (say the actual world) are violated at w. We (...)
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  12.  27
    Preface to ‘Economic Models as Credible Worlds or as Isolating Tools?’.Till Grüne-Yanoff - 2009 - Erkenntnis 70 (1):1-2.
    It is argued that one can learn from minimal economic models. Minimal models are models that are not similar to the real world, do not resemble some of its features, and do not adhere to accepted regularities. One learns from a model if constructing and analysing the model affects one’s confidence in hypotheses about the world. Economic models, I argue, are often assessed for their credibility. If a model is judged credible, it is considered to be (...)
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  13.  71
    Preface to 'economic models as credible worlds or as isolating tools?'.Till Grüne-Yanoff - 2009 - Erkenntnis 70 (1):1 - 2.
    It is argued that one can learn from minimal economic models. Minimal models are models that are not similar to the real world, do not resemble some of its features, and do not adhere to accepted regularities. One learns from a model if constructing and analysing the model affects one’s confidence in hypotheses about the world. Economic models, I argue, are often assessed for their credibility. If a model is judged credible, it is considered to be (...)
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  14.  14
    Event Knowledge in Large Language Models: The Gap Between the Impossible and the Unlikely.Carina Kauf, Anna A. Ivanova, Giulia Rambelli, Emmanuele Chersoni, Jingyuan Selena She, Zawad Chowdhury, Evelina Fedorenko & Alessandro Lenci - 2023 - Cognitive Science 47 (11):e13386.
    Word co‐occurrence patterns in language corpora contain a surprising amount of conceptual knowledge. Large language models (LLMs), trained to predict words in context, leverage these patterns to achieve impressive performance on diverse semantic tasks requiring world knowledge. An important but understudied question about LLMs’ semantic abilities is whether they acquire generalized knowledge of common events. Here, we test whether five pretrained LLMs (from 2018's BERT to 2023's MPT) assign a higher likelihood to plausible descriptions of agent−patient interactions than to (...)
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  15. Non-Normal Worlds and Representation.Francesco Berto - 2012 - In Michal Peliš & Vít Punčochář (eds.), The Logica Yearbook. College Publications.
    World semantics for relevant logics include so-called non-normal or impossible worlds providing model-theoretic counterexamples to such irrelevant entailments as (A ∧ ¬A) → B, A → (B∨¬B), or A → (B → B). Some well-known views interpret non-normal worlds as information states. If so, they can plausibly model our ability of conceiving or representing logical impossibilities. The phenomenon is explored by combining a formal setting with philosophical discussion. I take Priest’s basic relevant logic N4 and extend it, (...)
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  16.  20
    Guru Grantha Shahib: A Model for Interfaith Understanding in Today’s World.Kazi Nurul Islam - forthcoming - Philosophy and Progress:1-14.
    Though all the religions of the world teach love, preach sympathy for others and encourage man to exercise utmost self-restraint and have most profoundly been a source of inspiration for the highest good of mankind, the world today is torn by conflicts, enmity and religious hatred. In this predicament, a lasting and peaceful society is impossible unless different faiths are understood in their proper perspectives. Therefore, it is necessary that people belonging to different faiths understand each other well. This (...)
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  17. The Nature of Impossibility.Martin Vacek - 2019 - Bratislava, Slovakia: VEDA.
    Possible-worlds semantics proved itself as a strong tool in analysing the statements of actuality, possibility, contingency and necessity. But impossible phenomena go beyond the expressive power of the apparatus. The proponents of possible-worlds apparatus thus owe us at least three stories. The first one is the story about ontological nature of possible worlds, the second one is the story about the theoretical role such entities play and the third one is the story about the impossible. (...)
     
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  18.  32
    The Effort of Reasoning: Modelling the Inference Steps of Boundedly Rational Agents.Anthia Solaki - 2022 - Journal of Logic, Language and Information 31 (4):529-553.
    In this paper we design a new logical system to explicitly model the different deductive reasoning steps of a boundedly rational agent. We present an adequate system in line with experimental findings about an agent’s reasoning limitations and the cognitive effort that is involved. Inspired by Dynamic Epistemic Logic, we work with dynamic operators denoting explicit applications of inference rules in our logical language. Our models are supplemented by (a) impossible worlds (not closed under logical consequence), suitably (...)
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  19.  40
    Model-groups as scientific research programmes.Cristin Chall - 2020 - European Journal for Philosophy of Science 10 (1):1-24.
    Lakatos’s methodology of scientific research programmes centres around series of theories, with little regard to the role of models in theory construction. Modifying it to incorporate model-groups, clusters of developmental models that are intended to become new theories, provides a description of the model dynamics within the search for physics beyond the standard model. At the moment, there is no evidence for BSM physics, despite a concerted search effort especially focused around the standard model account of electroweak symmetry (...)
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  20. A model of jury decisions where all jurors have the same evidence.Franz Dietrich & Christian List - 2004 - Synthese 142 (2):175 - 202.
    Under the independence and competence assumptions of Condorcet’s classical jury model, the probability of a correct majority decision converges to certainty as the jury size increases, a seemingly unrealistic result. Using Bayesian networks, we argue that the model’s independence assumption requires that the state of the world (guilty or not guilty) is the latest common cause of all jurors’ votes. But often – arguably in all courtroom cases and in many expert panels – the latest such common cause is a (...)
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  21. Information and Impossibilities.Jon Barwise - 1997 - Notre Dame Journal of Formal Logic 38 (4):488-515.
    In this paper I explore informationalism, a pragmatic theory of modality that seems to solve some serious problems in the familiar possible worlds accounts of modality. I view the theory as an elaboration of Stalnaker's moderate modal realism, though it also derives from Dretske's semantic theory of information. Informationalism is presented in Section 2 after the prerequisite stage setting in Section 1. Some applications are sketched in Section 3. Finally, a mathematical model of the theory is developed in Section (...)
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  22.  92
    Impossible Worlds.Francesco Berto & Mark Jago - 2019 - Oxford: Oxford University Press. Edited by Mark Jago.
    Impossible Worlds focuses on an exciting new theory in philosophy, with applications in metaphysics, logic, and the theory of meaning. Its central topic is: how do we meaningfully talk and reason about situations which, unbeknownst to us, are impossible? This issue emerges as a central problem in contemporary philosophical accounts of meaning, information, knowledge, belief, fiction, conditionality, and counterfactual supposition. The book is written bytwo of the leading philosophers in the area and contains original research of relevance (...)
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  23. Impossible Worlds and Metaphysical Explanation: Comments on Kment’s Modality and Explanatory Reasoning.Nina Emery & Christopher S. Hill - 2017 - Analysis 77 (1):134-148.
    In this critical notice of Kment's _Modality and Explanatory Reasoning_, we focus on Kment’s arguments for impossible worlds and on a key part of his discussion of the interactions between modality and explanation – the analogy that he draws between scientific and metaphysical explanation.
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  24. Impossible Worlds.Francesco Berto - 2013 - Stanford Encyclopedia of Philosophy (2013):en ligne.
    It is a venerable slogan due to David Hume, and inherited by the empiricist tradition, that the impossible cannot be believed, or even conceived. In Positivismus und Realismus, Moritz Schlick claimed that, while the merely practically impossible is still conceivable, the logically impossible, such as an explicit inconsistency, is simply unthinkable. -/- An opposite philosophical tradition, however, maintains that inconsistencies and logical impossibilities are thinkable, and sometimes believable, too. In the Science of Logic, Hegel already complained against (...)
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  25. Impossible Worlds.Daniel Nolan - 2013 - Philosophy Compass 8 (4):360-372.
    Philosophers have found postulating possible worlds to be very useful in a number of areas, including philosophy of language and mind, logic, and metaphysics. Impossible worlds are a natural extension to this use of possible worlds, and can help resolve a number of difficulties thrown up by possible‐worlds frameworks.
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  26. Modal-Epistemic Arithmetic and the problem of quantifying in.Jan Heylen - 2013 - Synthese 190 (1):89-111.
    The subject of this article is Modal-Epistemic Arithmetic (MEA), a theory introduced by Horsten to interpret Epistemic Arithmetic (EA), which in turn was introduced by Shapiro to interpret Heyting Arithmetic. I will show how to interpret MEA in EA such that one can prove that the interpretation of EA is MEA is faithful. Moreover, I will show that one can get rid of a particular Platonist assumption. Then I will discuss models for MEA in light of the problems of (...)
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  27. Impossible worlds and propositions: Against the parity thesis.Francesco Berto - 2010 - Philosophical Quarterly 60 (240):471-486.
    Accounts of propositions as sets of possible worlds have been criticized for conflating distinct impossible propositions. In response to this problem, some have proposed to introduce impossible worlds to represent distinct impossibilities, endorsing the thesis that impossible worlds must be of the same kind; this has been called the parity thesis. I show that this thesis faces problems, and propose a hybrid account which rejects it: possible worlds are taken as concrete Lewisian (...), and impossibilities are represented as set-theoretic constructions out of them. This hybrid account (1) distinguishes many intuitively distinct impossible propositions; (2) identifies impossible propositions with extensional constructions; (3) avoids resorting to primitive modality, at least so far as Lewisian modal realism does. (shrink)
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  28. Impossible Worlds: A Modest Approach.Daniel Nolan - 1997 - Notre Dame Journal of Formal Logic 38 (4):535-572.
    Reasoning about situations we take to be impossible is useful for a variety of theoretical purposes. Furthermore, using a device of impossible worlds when reasoning about the impossible is useful in the same sorts of ways that the device of possible worlds is useful when reasoning about the possible. This paper discusses some of the uses of impossible worlds and argues that commitment to them can and should be had without great metaphysical or (...)
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  29. Learning from Minimal Economic Models.Till Grüne-Yanoff - 2009 - Erkenntnis 70 (1):81-99.
    It is argued that one can learn from minimal economic models. Minimal models are models that are not similar to the real world, do not resemble some of its features, and do not adhere to accepted regularities. One learns from a model if constructing and analysing the model affects one’s confidence in hypotheses about the world. Economic models, I argue, are often assessed for their credibility. If a model is judged credible, it is considered to be (...)
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  30.  54
    The Epistemic Impossibility of Economic Calculation.Panagiotis Karadimas - 2023 - Synthese 202 (6):1-22.
    Events regarding individuals’ preferences that do not always follow from standard measures such as “value of statistical life” or “quality-adjusted life years” as well as events that occur in some market-related settings which distort the information conveyed by price mechanisms, suggest that a notable chunk of what Hayek called “local knowledge” remains inaccessible by scientific tools and that only the individuals who interact in these local frameworks can have access to it. This casts serious doubt on the epistemic possibility of (...)
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  31. Impossible Worlds.Ira Kiourti - 2012 - Oxford Bibliographies in Philosophy.
    A brief outline of the themes and literature around impossible worlds in philosophy.
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  32.  3
    How to Believe Six Impossible Things before Breakfast: Irigaray, Alice and Neo-Pagan Negotiation of the Otherworld.Christina Nicholson - 2003 - Feminist Theology 11 (3):362-374.
    This paper was inspired by Irigaray's suggestion that patriarchal discourse is essentially paranoid, based upon a repressed ambiguity and violence that continually threatens the unity and stability of the subject. Lewis Carroll's 'Locking-Glass World' is employed as the metaphor for a system of meaning that is in the process of breaking down and reveals its shadow side in chaos, violence and power struggles. It is argued that Alice represents an idealized feminine submission to the rules of patriarchal discourse that appears (...)
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  33. Logically Impossible Worlds.Koji Tanaka - 2018 - Australasian Journal of Logic 15 (2):489.
    What does it mean for the laws of logic to fail? My task in this paper is to answer this question. I use the resources that Routley/Sylvan developed with his collaborators for the semantics of relevant logics to explain a world where the laws of logic fail. I claim that the non-normal worlds that Routley/Sylvan introduced are exactly such worlds. To disambiguate different kinds of impossible worlds, I call such worlds logically impossible worlds. (...)
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  34. Real impossible worlds : the bounds of possibility.Ira Georgia Kiourti - 2010 - Dissertation, University of St Andrews
    Lewisian Genuine Realism about possible worlds is often deemed unable to accommodate impossible worlds and reap the benefits that these bestow to rival theories. This thesis explores two alternative extensions of GR into the terrain of impossible worlds. It is divided in six chapters. Chapter I outlines Lewis’ theory, the motivations for impossible worlds, and the central problem that such worlds present for GR: How can GR even understand the notion of an (...)
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  35. Why scientific models are not works of fiction.Ronald N. Giere - unknown
    The usual question, “Are models fictions?” is replaced by the question, “Should scientific models be regarded as works of fiction?” This makes it clear that the issue is not one of definition but of interpretation. First one must distinguish between the ontology of scientific models and their function in the practice of science. Theoretical models and works of fiction are ontologically on a par, their both being creations of human imagination. It is their differing functions in (...)
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  36.  21
    Ricoeur’s Translation Model as a Mutual Labour of Understanding.Alison Scott-Baumann - 2010 - Theory, Culture and Society 27 (5):69-85.
    Ricoeur has written about translation as an ethical paradigm. Translation from one language to another, and within one’s own language, provides both a metaphor and a real mechanism for explaining oneself to the other. Attempting and failing to achieve symmetry between two languages is a manifestation of the asymmetry inherent in human relationships. If actively pursued, translation can show us how to forgive other people for being different from us and thus serves as a paradigm for tolerance. In full acceptance (...)
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  37.  54
    Proceedings of the 4th World Conference on Research Integrity: Brazil, Rio de Janeiro. 31 May - 3 June 2015.Lex Bouter, Melissa S. Anderson, Ana Marusic, Sabine Kleinert, Susan Zimmerman, Paulo S. L. Beirão, Laura Beranzoli, Giuseppe Di Capua, Silvia Peppoloni, Maria Betânia de Freitas Marques, Adriana Sousa, Claudia Rech, Torunn Ellefsen, Adele Flakke Johannessen, Jacob Holen, Raymond Tait, Jillon Van der Wall, John Chibnall, James M. DuBois, Farida Lada, Jigisha Patel, Stephanie Harriman, Leila Posenato Garcia, Adriana Nascimento Sousa, Cláudia Maria Correia Borges Rech, Oliveira Patrocínio, Raphaela Dias Fernandes, Laressa Lima Amâncio, Anja Gillis, David Gallacher, David Malwitz, Tom Lavrijssen, Mariusz Lubomirski, Malini Dasgupta, Katie Speanburg, Elizabeth C. Moylan, Maria K. Kowalczuk, Nikolas Offenhauser, Markus Feufel, Niklas Keller, Volker Bähr, Diego Oliveira Guedes, Douglas Leonardo Gomes Filho, Vincent Larivière, Rodrigo Costas, Daniele Fanelli, Mark William Neff, Aline Carolina de Oliveira Machado Prata, Limbanazo Matandika, Sonia Maria Ramos de Vasconcelos & Karina de A. Rocha - 2016 - Research Integrity and Peer Review 1 (Suppl 1).
    Table of contentsI1 Proceedings of the 4th World Conference on Research IntegrityConcurrent Sessions:1. Countries' systems and policies to foster research integrityCS01.1 Second time around: Implementing and embedding a review of responsible conduct of research policy and practice in an Australian research-intensive universitySusan Patricia O'BrienCS01.2 Measures to promote research integrity in a university: the case of an Asian universityDanny Chan, Frederick Leung2. Examples of research integrity education programmes in different countriesCS02.1 Development of a state-run “cyber education program of research ethics” in (...)
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  38.  14
    First-order possibility models and finitary completeness proofs.Matthew Harrison-Trainor - 2019 - Review of Symbolic Logic 12 (4):637-662.
    This article builds on Humberstone’s idea of defining models of propositional modal logic where total possible worlds are replaced by partial possibilities. We follow a suggestion of Humberstone by introducing possibility models for quantified modal logic. We show that a simple quantified modal logic is sound and complete for our semantics. Although Holliday showed that for many propositional modal logics, it is possible to give a completeness proof using a canonical model construction where every possibility consists of (...)
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  39.  28
    Studies in Plato's Two-Level Model (review).Ian Mueller - 2000 - Journal of the History of Philosophy 38 (2):272-273.
    In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Studies in Plato's Two-Level ModelIan MuellerHolger Thesleff. Studies in Plato's Two-Level Model. Helsinki: Societas Scientarum Fennica, 1999. Pp. vi + 143. N. P.After some 30 years of incisive intervention in Platonic scholarship, Holger Thesleff here offers us "an attempt to elaborate and ground more firmly some basic theses which I have propounded in various contexts before," (1) a rather modest description of what he also describes as an (...)
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  40. A Dynamic Solution to the Problem of Logical Omniscience.Mattias Skipper & Jens Christian Bjerring - 2019 - Journal of Philosophical Logic 48 (3):501-521.
    The traditional possible-worlds model of belief describes agents as ‘logically omniscient’ in the sense that they believe all logical consequences of what they believe, including all logical truths. This is widely considered a problem if we want to reason about the epistemic lives of non-ideal agents who—much like ordinary human beings—are logically competent, but not logically omniscient. A popular strategy for avoiding logical omniscience centers around the use of impossible worlds: worlds that, in one way or (...)
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  41.  41
    In between impossible worlds.Maciej Sendłak - forthcoming - Inquiry: An Interdisciplinary Journal of Philosophy.
    The common view has it that there are two families of approaches towards the logical structure of impossible worlds – Australasian and North American. According to the first, impossible worlds are closed under the relation of logical consequence of one of the non-classical logics. The North American approach is more liberal, allowing for impossible worlds where no logic holds. After pointing out the questionable consequences of each view, I propose a third one. While this (...)
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  42. Impossibility and Impossible Worlds.Daniel Nolan - 2018 - In Otávio Bueno & Scott A. Shalkowski (eds.), The Routledge Handbook of Modality. New York: Routledge. pp. 40-48.
    Possible worlds have found many applications in contemporary philosophy: from theories of possibility and necessity, to accounts of conditionals, to theories of mental and linguistic content, to understanding supervenience relationships, to theories of properties and propositions, among many other applications. Almost as soon as possible worlds started to be used in formal theories in logic, philosophy of language, philosophy of mind, metaphysics, and elsewhere, theorists started to wonder whether impossible worlds should be postulated as well. In (...)
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  43.  11
    The Problem of the Influence of Possible Worlds on the Nature of Their Perception under the Conditions of Various Fundamental Physical Principles.Ivan A. Karpenko - 2020 - Russian Journal of Philosophical Sciences 63 (2):63-85.
    The article is devoted to the problem of interpreting of the several consequences that derive from multi-world concepts of modern physics. The inflation scenario and the associated string landscape model are the objects of analysis. The reviewed multi-world concepts are exposed to presume the existence of a plenitude of various fundamental principles that govern the physics of one or another possible reality. The research is based on the hermeneutical method, comparative method, dialectical method, formal translation method, and scientific modeling method. (...)
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  44.  41
    Concrete Impossible Worlds.Martin Vacek - 2013 - Filozofia 68 (6):523-530.
    The paper deals with such a modification of genuine modal realism as to accommodate impossible worlds into its ontology. First of all, the theory of modal realism is presented. Next, several motivations for the acceptance of impossible worlds are adduced. Further, Lewis’s argument against impossible worlds is presented. It is argued that the argument can be weakened by rejection of one of its premises. Finally, two objections against the proposal are countered. Although my strategy (...)
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  45.  24
    What is the world of mathematics?J. Lambek - 2004 - Annals of Pure and Applied Logic 126 (1-3):149-158.
    It may be argued that the language of mathematics is about the category\nof sets, although the definite article requires some justification.\nAs possible worlds of mathematics we may admit all models of type\ntheory, by which we mean all local toposes. For an intuitionist,\nthere is a distinguished local topos, namely the so-called free topos,\nwhich may be constructed as the Tarski–Lindenbaum category of intuitionistic\ntype theory. However, for a classical mathematician, to pick a distinguished\nmodel may be as difficult as to define the (...)
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  46. Are Impossible Worlds Trivial?Mark Jago - 2013 - In Vit Puncochar & Petr Svarny (eds.), The Logica Yearbook 2012. College Publications.
    Theories of content are at the centre of philosophical semantics. The most successful general theory of content takes contents to be sets of possible worlds. But such contents are very coarse-grained, for they cannot distinguish between logically equivalent contents. They draw intensional but not hyperintensional distinctions. This is often remedied by including impossible as well as possible worlds in the theory of content. Yet it is often claimed that impossible worlds are metaphysically obscure; and it (...)
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  47.  6
    The main directions of counteraction to the “russian world” in Ukraine: the tasks of decolonization.Mykhailo Boichenko - 2024 - Filosofiya osvity Philosophy of Education 29 (2):60-77.
    Despite the fact that there is now a general public agreement in Ukraine regarding the need to oppose the “russian world”, there are quite diverse and sometimes contradictory proposals among Ukrainian citizens regarding the ways to implement such an opposition. In state policy, the main line of implementing such countermeasures is gradually beginning to emerge, however, it is necessary to logically and organizationally substantiate the main stages of its implementation. The essence of opposition to the “russian world” lies in the (...)
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  48. How Close Are Impossible Worlds? A Critique of Brogaard and Salerno’s Account of Counterpossibles.Dan Baras - 2019 - Dialectica 73 (3):315-329.
    Several theorists have been attracted to the idea that in order to account for counterpossibles, i.e. counterfactuals with impossible antecedents, we must appeal to impossible worlds. However, few have attempted to provide a detailed impossible worlds account of counterpossibles. Berit Brogaard and Joe Salerno’s ‘Remarks on Counterpossibles’ is one of the few attempts to fill in this theoretical gap. In this article, I critically examine their account. I prove a number of unanticipated implications of their (...)
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  49. Sensitivity, safety, and impossible worlds.Guido Melchior - 2021 - Philosophical Studies 178 (3):713-729.
    Modal knowledge accounts that are based on standards possible-worlds semantics face well-known problems when it comes to knowledge of necessities. Beliefs in necessities are trivially sensitive and safe and, therefore, trivially constitute knowledge according to these accounts. In this paper, I will first argue that existing solutions to this necessity problem, which accept standard possible-worlds semantics, are unsatisfactory. In order to solve the necessity problem, I will utilize an unorthodox account of counterfactuals, as proposed by Nolan, on which (...)
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    Contemporary Global Transformation of University System and the Philosophy of Education Specifications in Anglo-Saxon and American Models of Education and Research Management.Viktor Zinchenko - 2016 - Філософія Освіти 18 (1):94-116.
    In today’s world there is diversification of different models of higher education. At the same time, the multiplicity, the diversity of higher education models does not exclude their identity. Internationalization and integration of higher education in a global and international dimension raise a lot of new questions to the theory and practice. Almost every developed country has the rich experience of building the higher education system. The analysis of this experience can aid development and enrichment of the national (...)
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