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Summary Possible worlds semantics is a general approach to theories of meaning, on which meanings (or, more precisely, semantic values) are assigned to sentences in terms of the truth-values they take across all possible worlds. The intuition is that the meaning of a sentence specifies how the world would have to be for that sentence to be true (or false). This is typically made precise by identifying the semantic value of a sentence with its possible-worlds intension, a function from possible worlds to truth-values. When those values are just true and false (and are mutually exclusive), possible worlds intensions are equivalent to sets of possible worlds (the worlds at which the sentence is question is true). The approach can be generalised by treating semantic values for sub-sentential items (such as nouns and verbs) as functions from possible worlds to other entities (such as particulars, properties and relations). ‘Possible worlds semantics’ is also used in a narrower sense, to refer to formal Kripke semantics for modal (and other) logics. 
Key works Carnap 1947 and Wittgenstein et al 1922 are important precursors to possible worlds semantics. Kripke developed the formal semantics for modal logic in Kripke 1959, 1963 and for intuitionistic logic in Kripke 1963. Key works applying possible worlds semantics to natural language include Cresswell 1973Lewis 1970, Montague 1973Kratzer 1977Lewis 1986 and Lewis 1973Hintikka 1962, 1967 develops formal possible worlds semantics and applies it to epistemic concepts.
Introductions Heim & Kratzer 1998 is a very comprehensive (although difficult) introduction to possible worlds semantics and its application to natural language. Lewis 1970 is a much shorter overview. Girle 2003 and Girle 2000 are introductory textbooks on formal possible worlds semantics in modal logic. Cresswell & Hughes 1996 is a classic textbook in modal logic. Sider 2010 includes a good presentation of quantified first-order logic.
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  1. added 2020-05-16
    Against Conventional Wisdom.Alexander W. Kocurek, Ethan Jerzak & Rachel Etta Rudolph - forthcoming - Philosophers' Imprint.
    Conventional wisdom has it that truth is always evaluated using our actual linguistic conventions, even when considering counterfactual scenarios in which different conventions are adopted. This principle has been invoked in a number of philosophical arguments, including Kripke’s defense of the necessity of identity and Lewy’s objection to modal conventionalism. But it is false. It fails in the presence of what Einheuser (2006) calls c-monsters, or convention-shifting expressions (on analogy with Kaplan’s monsters, or context-shifting expressions). We show that c-monsters naturally (...)
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  2. added 2020-04-22
    Sensitivity, Safety, and Impossible Worlds.Guido Melchior - forthcoming - Philosophical Studies:1-17.
    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 we also (...)
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  3. added 2020-04-05
    Introduzione alle Logiche Modali.Marcello Frixione, Samuele Iaquinto & Massimiliano Vignolo - 2016 - Roma-Bari: Laterza.
    La logica modale è nata per studiare i ragionamenti su ciò che è possibile e ciò che è necessario. Negli ultimi decenni, a partire dal lavoro di logici e filosofi quali Rudolf Carnap, Saul Kripke e David Lewis, la sua applicazione è stata progressivamente estesa ad altri ambiti, quali il ragionamento sul tempo, sulla conoscenza e sui sistemi di norme. Queste ricerche hanno condotto a un complesso e intrigante dialogo con alcune fondamentali branche della filosofia: la metafisica, l’epistemologia, la filosofia (...)
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  4. added 2020-04-03
    The Neo-Molinist Square Stands Firm: A Rejoinder to Kirk MacGregor.Elijah Hess - 2019 - Philosophia Christi 21 (2):391-406.
    In a previous issue of Philosophia Christi, Kirk MacGregor responded to an essay of mine in which I argued for a neo-Molinist account of open theism. The argument demonstrated how, given standard counterfactual semantics, one could derive an “open future square of opposition,” that is, a depiction of the logical relations that hold between future-tense statements from an open theistic standpoint. Conceding the validity of the argument, MacGregor nevertheless sought to deny its soundness by criticizing both its conclusion and the (...)
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  5. added 2020-03-10
    Back to the actual future.Jacek Wawer & Alex Malpass - 2020 - Synthese 197 (5):2193-2213.
    The purpose of the paper is to rethink the role of actuality in the branching model of possibilities. We investigate the idea that the model should be enriched with an additional factor—the so-called Thin Red Line—which is supposed to represent the single possible course of events that gets actualized in time. We believe that this idea was often misconceived which prompted some unfortunate reactions. On the one hand, it suggested problematic semantic models of future tense and and on the other, (...)
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  6. added 2019-12-22
    Hybrid Identities and Just Being Yourself.Gillian Russell - 2014 - Inquiry: An Interdisciplinary Journal of Philosophy 57 (4):455-465.
    This paper points out a tension between Agustín Rayo's criteria for singulartermhood and his explicit views on the status of Hybrid Identities, that is, identity statements that use singular terms from two different Systems of Representation, such as "7=Julius Caesar" or more suggestively "I am b" where "b" is a singular term referring to my brain. It argues that non-trivial Hybrid Identities are common and important in philosophy and elsewhere, and it suggests a friendly alternative that involves treating Hybrid Identities (...)
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  7. added 2019-12-20
    Negation on the Australian Plan.Francesco Berto & Greg Restall - 2019 - Journal of Philosophical Logic 48 (6):1119-1144.
    We present and defend the Australian Plan semantics for negation. This is a comprehensive account, suitable for a variety of different logics. It is based on two ideas. The first is that negation is an exclusion-expressing device: we utter negations to express incompatibilities. The second is that, because incompatibility is modal, negation is a modal operator as well. It can, then, be modelled as a quantifier over points in frames, restricted by accessibility relations representing compatibilities and incompatibilities between such points. (...)
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  8. added 2019-12-12
    From Ideal Worlds to Ideality.Craig Warmke - forthcoming - Journal of the American Philosophical Association.
    In common treatments of deontic logic, the obligatory is what's true in all deontically ideal possible worlds. In this article, I offer a new semantics for Standard Deontic Logic with Leibnizian intensions rather than possible worlds. Even though the new semantics furnishes models that resemble Venn diagrams, the semantics captures the strong soundness and completeness of Standard Deontic Logic. Since, unlike possible worlds, many Leibnizian intensions are not maximally consistent entities, we can amend the semantics to invalidate the inference rule (...)
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  9. added 2019-10-09
    Arguments Whose Strength Depends on Continuous Variation.James Franklin - 2013 - Informal Logic 33 (1):33-56.
    Both the traditional Aristotelian and modern symbolic approaches to logic have seen logic in terms of discrete symbol processing. Yet there are several kinds of argument whose validity depends on some topological notion of continuous variation, which is not well captured by discrete symbols. Examples include extrapolation and slippery slope arguments, sorites, fuzzy logic, and those involving closeness of possible worlds. It is argued that the natural first attempts to analyze these notions and explain their relation to reasoning fail, so (...)
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  10. added 2019-09-19
    Modals Under Epistemic Tension.Guillermo Del Pinal & Brandon Waldon - 2019 - Natural Language Semantics 27 (2):135-188.
    According to Kratzer’s influential account of epistemic 'must' and 'might', these operators involve quantification over domains of possibilities determined by a modal base and an ordering source. Recently, this account has been challenged by invoking contexts of ‘epistemic tension’: i.e., cases in which an assertion that 'must p' is conjoined with the possibility that 'not p', and cases in which speakers try to downplay a previous assertion that 'must p', after finding out that 'not p'. Epistemic tensions have been invoked (...)
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  11. added 2019-09-12
    Freedom and the Self: Essays on the Philosophy of David Foster Wallace.Steven M. Cahn & Maureen Eckert (eds.) - 2015 - Columbia University Press.
    The book_ Fate, Time, and Language: An Essay on Free Will_, published in 2010 by Columbia University Press, presented David Foster Wallace's challenge to Richard Taylor's argument for fatalism. In this anthology, notable philosophers engage directly with that work and assess Wallace's reply to Taylor as well as other aspects of Wallace's thought. With an introduction by Steven M. Cahn and Maureen Eckert, this collection includes essays by William Hasker, Gila Sher, Marcello Oreste Fiocco, Daniel R. Kelly, Nathan Ballantyne, Justin (...)
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  12. added 2019-09-12
    Fate, Time and Language: An Essay on Free Will.Steven M. Cahn & Maureen Eckert (eds.) - 2010 - Cambridge University Press.
    In 1962, the philosopher Richard Taylor used six commonly accepted presuppositions to imply that human beings have no control over the future. David Foster Wallace not only took issue with Taylor's method, which, according to him, scrambled the relations of logic, language, and the physical world, but also noted a semantic trick at the heart of Taylor's argument. _Fate, Time, and Language_ presents Wallace's brilliant critique of Taylor's work. Written long before the publication of his fiction and essays, Wallace's thesis (...)
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  13. added 2019-09-09
    The Myth of the De Se.Ofra Magidor - 2015 - Philosophical Perspectives 29 (1):249-283.
  14. added 2019-09-05
    On the Pragmatic Approach to Counterpossibles.Maciej Sendłak - 2019 - Philosophia 47 (2):523-532.
    Nina Emery and Christopher Hill proposed a pragmatic approach toward the debate about counterpossibles—i.e., counterfactuals with impossible antecedents. The core of this approach is to move the burden of the problem from the notion of truth value into the notion of assertion. This is meant to explain our pre-theoretical intuitions about counterpossibles while claiming that each and every counterpossible is vacuously true. The aim of this paper is to indicate a problematic aspect of this view.
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  15. added 2019-09-05
    On Quantitative and Qualitative Parsimony.Maciej Sendłak - 2018 - Metaphilosophy 49 (1-2):153-166.
    The distinction between quantitative and qualitative parsimony is supposed to allow David Lewis to dismiss one of the charges against his modal realism: that is, the charge of bloated ontology. The aim of this paper is to undermine Lewis's response to this objection. In order to do this, a distinction between multipliable and nonmultipliable objects is introduced. Based on this it is argued that the acceptance of Lewis's response requires one to believe in modal realism in the first place—that is, (...)
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  16. added 2019-08-25
    Hi-Individuals and Where to Find Them—Towards a Hi-World Semantics for Quantified Modal Logic.Cheng-Chih Tsai - forthcoming - Acta Analytica:1-15.
    If to be is to be the value of a bound variable, then the acknowledgment and denial of the existence of chairs amounts to a serious disagreement about the range of a quantifier. However, by resorting to the intrinsic hierarchical structure of hi-world semantics, we find that the varying of domains from worlds to worlds can actually be accommodated within a unified framework. With the introduction of a universal domain D of hi-individuals and an existence predicate E that serves as (...)
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  17. added 2019-08-06
    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 leading philosophical (...)
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  18. added 2019-07-11
    Logic Through a Leibnizian Lens.Craig Warmke - 2019 - Philosophers' Imprint 19.
    Leibniz's conceptual containment theory says that singular propositions of the form a is F are true when the complete concept of being a contains the concept of being F. In this paper, I provide a new semantics for first-order logic built around this idea. The semantics resolves longstanding problems for Leibniz's theory and can represent, without possible worlds, both hyperintensional distinctions among properties and a certain kind of presumably impossible situation that standard approaches cannot represent. The semantics also captures the (...)
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  19. added 2019-07-05
    Transworld Identity as a Problem for Essentialism About Kinds.Kaave Lajevardi - manuscript
    Essentialism about natural kinds involves talking about kinds across possible worlds. I argue that there is a non-trivial transworld identity problem here, which cannot be (dis)solved in the same way that Kripke treats the corresponding transworld identity problem for individuals. -/- I will briefly discuss some ideas for a solution. The upshot is scepticism concerning natural-kind essentialism.
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  20. added 2019-06-05
    Peacocke’s Principle-Based Account of Modality: “Flexibility of Origins” Plus S4.Sonia Roca Royes - 2006 - Erkenntnis 65 (3):405-426.
    Due to the influence of Nathan Salmon's views, endorsement of the "flexibility of origins" thesis is often thought to carry a commitment to the denial of S4. This paper rejects the existence of this commitment and examines how Peacocke's theory of the modal may accommodate flexibility of origins without denying S4. One of the essential features of Peacocke's account is the identification of the Principles of Possibility, which include the Modal Extension Principle, and a set of Constitutive Principles. Regarding their (...)
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  21. added 2019-06-05
    Ontologies and Worlds in Category Theory: Implications for Neural Systems.Michael John Healy & Thomas Preston Caudell - 2006 - Axiomathes 16 (1):165-214.
    We propose category theory, the mathematical theory of structure, as a vehicle for defining ontologies in an unambiguous language with analytical and constructive features. Specifically, we apply categorical logic and model theory, based upon viewing an ontology as a sub-category of a category of theories expressed in a formal logic. In addition to providing mathematical rigor, this approach has several advantages. It allows the incremental analysis of ontologies by basing them in an interconnected hierarchy of theories, with an operation on (...)
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  22. added 2019-06-05
    Rigidity and the Description of Counterfactual Situations.Genoveva Martí - 1998 - Theoria 13 (3):477-490.
    In this paper I discuss two approaches to rigidity. I argue that they differ in the general conception of semantics that each embraces. Moreover, I argue that they differ in how each explains the rigidity of general terms, and in what each presupposes in that explanation.
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  23. added 2019-06-05
    Jerome Bruner. "Actual Minds, Possible Worlds". [REVIEW]Amedeo Giorgi - 1988 - New Vico Studies 6:171.
  24. added 2019-05-10
    Analyticity, Modality and General Terms.Peter Pagin & Kathrin Glüer-Pagin - 2007 - In J. Josefsson D. Egonsson (ed.), Hommage à Wlodek. Philosophical Papers Dedicated to Wlodek Rabinowicz.
    In his recent paper ‘Analyticity: An Unfinished Business in Possible-World Semantics’ (Rabinowicz 2006), Wlodek Rabinowicz takes on the task of providing a satisfactory definition of analyticity in the framework of possible-worlds semantics. As usual, what Wlodek proposes is technically well-motivated and very elegant. Moreover, his proposal does deliver an interesting analytic/synthetic distinction when applied to sentences with natural kind terms. However, the longer we thought and talked about it, the more questions we had, questions of both philosophical and technical nature. (...)
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  25. added 2019-04-12
    How important are truth-conditions for truth-conditional semantics?Toby Napoletano - 2019 - Linguistics and Philosophy 42 (6):541-575.
    In this paper, I argue that while truth-conditional semantics in generative linguistics provides lots of good semantic explanations, truth-conditions do not play an important role in these explanations. That is, the fact that expressions have the particular truthconditional contents they have does not even partly explain facts about semantic phenomena. Rather, explanations of semantic phenomena appeal to extra-truth-conditional properties attributed to expressions via their lexical entries. Focusing on recent truth-conditional work on gradable adjectives and degree modifiers by Kennedy and McNally, (...)
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  26. added 2019-03-21
    Pietroski on Possible Worlds Semantics for Belief Sentences.Joe Lau - 1995 - Analysis 55 (4):295.
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  27. added 2019-03-13
    Fähigkeiten und Dispositionen (Draft).Romy Jaster - manuscript
    In diesem Aufsatz argumentiere ich für eine teleologische Fähigkeitstheorie, derzufolge Fähigkeiten Dispositionen zu zweckmäßigem Handeln sind.
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  28. added 2019-03-08
    How to Hintikkize a Frege.Fabien Schang - 2016 - In Amirouche Moktefi, Alessio Moretti & Fabien Schang (eds.), Let’s be Logical (Studies in the Philosophy and History of Logic). Londres, Royaume-Uni: pp. 161-172.
    The paper deals with the main contribution of the Finnish logician Jaakko Hintikka: epistemic logic, in particular the 'static' version of the system based on the formal analysis of the concepts of knowledge and belief. I propose to take a different look at this philosophical logic and to consider it from the opposite point of view of the philosophy of logic. At first, two theories of meaning are described and associated with two competing theories of linguistic competence. In a second (...)
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  29. added 2019-03-04
    A Survey of David Lewis's Theory of Counterfactuals: Resolved Difficulties and Resilient Obstacles.Thad Botham - 1999 - Dissertation, Texas A&M University
    David Lewis [1973] offers a possible worlds approach to a theory of counterfactuals. He attempts to specify necessary and sufficient conditions according to which a given counterfactual is true or false. This MA Thesis surveys Lewis's theory of counterfactuals in detail. Although for the most part I defend Lewis's account from several objections, in the final chapter I reason that his theory is susceptible to skepticism, which threatens any philosophical theory that relies on Lewis's theory to distinguish between non-paradigmatically true (...)
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  30. added 2019-01-31
    Stalnaker’s Assertoric Contents.Cem Şişkolar - forthcoming - Inquiry: An Interdisciplinary Journal of Philosophy:1-20.
    I compare Stalnaker’s early take on assertoric content with the one expressed in his recent book (2014). I discern in the latter some striking implications about the semantics of proper names and assertoric content’s relation to semantics.
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  31. added 2019-01-28
    Outline of an Object-Based Truthmaker Semantics for Modals and Propositional Attitudes.Friederike Moltmann - forthcoming - In Dirk Kindermann, Peter Van Elswyk & Andy Egan (eds.), Unstructured Content. Oxford University Press.
    Against the background of standard possible-worlds semantics, this paper outlines a truthmaker approach to the semantics of attitude reports and modal sentences based on an ontology of attitudinal and modal objects.
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  32. added 2018-11-18
    Safety, the Preface Paradox and Possible Worlds Semantics.Michael Shaffer - 2019 - Axiomathes 29 (4):347-361.
    This paper contains an argument to the effect that possible worlds semantics renders semantic knowledge impossible, no matter what ontological interpretation is given to possible worlds. The essential contention made is that possible worlds semantic knowledge is unsafe and this is shown by a parallel with the preface paradox.
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  33. added 2018-09-26
    A Category Semantics.Paul Symington - 2018 - In Paul Hackett (ed.), Mereologies, Ontologies, and Facets: The Categorial Structure of Reality. New York: Lexington Books. pp. 65-85.
    In this paper, I present a categorial theory of meaning which asserts that the meaning of a sentence is the function from the actualization of some potentiality or the potentiality of some actuality to the truth of the sentence. I argue that it builds on the virtues of David Lewis’s Possible World Semantics but advances beyond problems that Lewis’s theory faces with its distinctly Aristotelian turn toward actuality and potentiality.
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  34. added 2018-09-06
    On Context Shifters and Compositionality in Natural Languages.Adrian Briciu - 2018 - Organon F: Medzinárodný Časopis Pre Analytickú Filozofiu 25 (1):2-20.
    My modest aim in this paper is to prove certain relations between some type of hyper-intensional operators, namely context shifting operators, and compositionality in natural languages. Various authors (e.g. von Fintel & Matthewson 2008; Stalnaker 2014) have argued that context-shifting operators are incompatible with compositionality. In fact, some of them understand Kaplan’s (1989) famous ban on context-shifting operators as a constraint on compositionality. Others, (e.g. Rabern 2013) take contextshifting operators to be compatible with compositionality but, unfortunately, do not provide a (...)
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  35. added 2018-09-06
    Real Possibility.Harry Deutsch - 1990 - Noûs 24 (5):751-755.
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  36. added 2018-08-30
    Contingent Composition as Identity.Giorgio Lando & Massimiliano Carrara - 2019 - Synthese 1 (Online First):1-30.
    When the Necessity of Identity (NI) is combined with Composition as Identity (CAI), the contingency of composition (CC) is at risk. In the extant literature, either NI is seen as the basis for a refutation of CAI or CAI is associated with a theory of modality, such that: either NI is renounced (if counterpart theory is adopted); or CC is renounced (if the theory of modal parts is adopted). In this paper, we investigate the prospects of a new variety of (...)
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  37. added 2018-08-19
    A Modality Called ‘Negation’.Francesco Berto - 2015 - Mind 124 (495):761-793.
    I propose a comprehensive account of negation as a modal operator, vindicating a moderate logical pluralism. Negation is taken as a quantifier on worlds, restricted by an accessibility relation encoding the basic concept of compatibility. This latter captures the core meaning of the operator. While some candidate negations are then ruled out as violating plausible constraints on compatibility, different specifications of the notion of world support different logical conducts for negations. The approach unifies in a philosophically motivated picture the following (...)
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  38. added 2018-07-18
    Possible Worlds Semantics.Daniel Nolan - 2012 - In Gillian Russell & Delia Fara (eds.), The Routledge Companion to Philosophy of Language. New York, USA: Routledge Press. pp. 242-252.
    This chapter provides an introduction to possible worlds semantics in both logic and the philosophy of language, including a discussion of some of the advantages and challenges for possible worlds semantics.
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  39. added 2018-06-27
    An Object‐Based Truthmaker Semantics for Modals.Friederike Moltmann - 2018 - Philosophical Issues 28 (1):255-288.
    Possible worlds semantics faces a range of difficulties for at least certain types of modals, especially deontic modals with their distinction between heavy and light permissions and obligations. This paper outlines a new semantics of modals that aims to overcome some of those difficulties. The semantics is based on an a novel ontology of modal objects, entities like obligations, permissions, needs, as well as epistemic states, abilities, and essences. Moreover, it is based on truthmaking, in the sense of Fine’s recent (...)
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  40. added 2018-06-12
    Modal Difficulties with Singular Propositions.Filip Kawczyński - 2015 - Filozofia Nauki 23 (1):39-58.
    Singular propositions are structured entities which sometimes include macroscopic concrete things as their elements. That leads to numerous difficulties, also those concerning modalities, good example of which is the famous argument developed by Plantinga, who concludes that accepting a theory of singular propositions leads to necessary existence of (apparently contingent) objects — elements of such propos¬itions. In the paper I present a possible way to avoid such harmful consequences and to undermine Plantinga’s reasoning. My approach involves the idea of two (...)
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  41. added 2018-06-06
    Duas teorias realistas para a interpretação da semântica dos mundos possíveis.Renato Mendes Rocha - 2010 - Inquietude 1 (1):72-79.
    O discurso a respeito dos Mundos Possíveis pode ser uma ferramenta bastante útil para a filosofia. Pode ser útil, por exemplo, para a compreensão das modalidades, da necessidade e da possibilidade. No entanto, para utilizar o discurso dos Mundos Possíveis devemos ter uma explicação satisfatória do caráter ontológico da Semântica dos Mundos Possíveis. Para isso, precisamos responder a questões do tipo: O que é um Mundo Possível? De que forma eles existem? Em quantos Mundos Possíveis podemos falar? Há diversas formas (...)
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  42. added 2018-05-30
    Semantic Possibility.Wolfgang Schwarz - 2018 - In Derek Ball & Brian Rabern (eds.), The Science of Meaning. Oxford University Press. pp. 361-380.
    This paper starts out from the idea that semantics is a “special science” whose aim, like that of chemistry or ecology, is to identify systematic, high-level patterns in a fundamentally physical world. I defend an approach to this task on which sentences are associated with with sets of possible worlds (of some kind). These sets of worlds, however, are not postulated for the compositional treatment of intensional contexts; they are not meant to capture what is intuitively asserted or communicated by (...)
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  43. added 2018-04-30
    Genericity.Alda Mari, Claire Beyssade & Fabio Del Prete (eds.) - 2012 - Oxford: Oxford University Press.
    This book provides an up-to-date introduction to the study of generics and pursues the enterprise of the influential Generic Book edited by Gregory Carlson and Jeffry Pelletier, which was published in 1995. Genericity is a key notion in the study of human cognition as it reveals our capacity to organize our perceived reality into classes and to describe regularities. The generic can be expressed at the level of a word or phrase (ie the potato in The Irish economy became dependent (...)
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  44. added 2018-04-29
    A Unified Analysis of the Future as Epistemic Modality.Anastasia Giannakidou and Alda Mari - 2018 - Natural Language and Linguistic Theory 36:85-129.
    We offer an analysis of future morphemes as epistemic operators. The main empirical motivation comes from the fact that future morphemes have systematic purely epistemic readings—not only in Greek and Italian, but also in Dutch, German, and English will. The existence of epistemic readings suggests that the future expressions quantify over epistemic, not metaphysical alternatives. We provide a unified analysis for epistemic and predictive readings as epistemic necessity, and the shift between the two is determined compositionally by the lower tense. (...)
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  45. added 2018-04-29
    Actuality Entailments: When the Modality is in the Presupposition.Alda Mari - 2016 - In M. Amblard, P. de Groote, S. Pogodalla & C. Retoré (eds.), Logical Aspects of Computational Linguistics. Celebrating 20 Years of LACL (1996–2016). Springer. pp. 191-210.
    We show that actuality entailments arise with goal-oriented modality only and endorse Belnap’s view of that goal-oriented modals use historical accessibility with a fixed past and an open future. This modal-theoretic assumption allows us to spell out the precise modal-temporal configuration in which the actuality entailment arises and our predictions are borne out by the data, cross-linguistically. We also show that, when any assumption about the identity of worlds at branching point is leveled - which appears to be the case (...)
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  46. added 2018-03-08
    Still in the Mood: The Versatility of Subjunctive Markers in Modal Logic.Kai F. Wehmeier & Helge Rückert - 2019 - Topoi 38 (2):361-377.
    We investigate and compare two major approaches to enhancing the expressive capacities of modal languages, namely the addition of subjunctive markers on the one hand, and the addition of scope-bearing actuality operators, on the other. It turns out that the subjunctive marker approach is not only every bit as versatile as the actuality operator approach, but that it in fact outperforms its rival in the context of cross-world predication.
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  47. added 2018-03-08
    In the Mood.Kai Frederick Wehmeier - 2004 - Journal of Philosophical Logic 33 (6):607-630.
    The purpose of the present paper is to challenge some received assumptions about the logical analysis of modal English, and to show that these assumptions are crucial to certain debates in current philosophy of language. Specifically, I will argue that the standard analysis in terms of quantified modal logic mistakenly fudges important grammatical distinctions, and that the validity of Kripke's modal argument against description theories of proper names crucially depends on ensuing equivocations.
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  48. added 2018-02-18
    Modal Logic for Other-World Agnostics: Neutrality and Halldén Incompleteness.Lloyd Humberstone - 2007 - Journal of Philosophical Logic 36 (1):1-32.
    The logic of 'elsewhere,' i.e., of a sentence operator interpretable as attaching to a formula to yield a formula true at a point in a Kripke model just in case the first formula is true at all other points in the model, has been applied in settings in which the points in question represent spatial positions, as well as in the case in which they represent moments of time. This logic is applied here to the alethic modal case, in which (...)
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  49. added 2018-02-17
    Topics in the Philosophy of Possible Worlds.Daniel Nolan - 2002 - Routledge.
    This book discusses a range of important issues in current philosophical work on the nature of possible worlds. Areas investigated include the theories of the nature of possible worlds, general questions about metaphysical analysis and questions about the direction of dependence between what is necessary or possible and what could be.
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  50. added 2018-02-17
    Pietroski on Possible Worlds Semantics for Belief Sentences.Joe Lau - 1995 - Analysis 55 (4):295.
    Pietroski (1993) offers a semantics for belief sentences that is supposed to address the problem of equivalence. This paper argues that his proposal fails to solve the problem.
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