Results for 'intensionality'

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  1. 1.1. The logistic method. Church's writings on philosophical matters ex-hibit an unwavering commitment to what he called the “logistic method”. 3 The term did not catch on and now one would just speak of “formalization”. The use of these ideas is now so common and familiar among logicians. [REVIEW]Intensional Logic - 1998 - Bulletin of Symbolic Logic 4 (2).
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  2. Intensional Logic and the Metaphysics of Intentionality.Edward N. Zalta - 1988 - Cambridge, MA, USA: MIT Press.
    This book tackles the issues that arise in connection with intensional logic -- a formal system for representing and explaining the apparent failures of certain important principles of inference such as the substitution of identicals and existential generalization -- and intentional states --mental states such as beliefs, hopes, and desires that are directed towards the world. The theory offers a unified explanation of the various kinds of inferential failures associated with intensional logic but also unifies the study of intensional contexts (...)
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  3. Intensional verbs and their intentional objects.Friederike Moltmann - 2008 - Natural Language Semantics 16 (3):239-270.
    The complement of intensional transitive verbs, like any nonreferential complement, can be replaced by a ‘special quantifier’ or ‘special pronoun’ such as 'something', 'the same thing', or 'what'. In this paper, I will defend the ‘Nominalization Theory’ of special quantifiers against a range of apparent counterexamples involving intensional transitive verbs.
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  4. Intensional Perceptual Ascriptions.David Bourget - 2017 - Erkenntnis 82 (3):513-530.
    This paper defends the view that perceptual ascriptions such as “Jones sees a cat” are sometimes intensional. I offer a range of examples of intensional perceptual ascriptions, respond to objections to intensional readings of perceptual ascriptions, and show how widely accepted semantic accounts of intensionality can explain the key features of intensional perceptual ascriptions.
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  5. Intensional verbs and quantifiers.Friederike Moltmann - 1997 - Natural Language Semantics 5 (1):1-52.
    This paper discusses the semantics of intensional transitive verbs such as 'need', 'want','recognize', 'find', and 'hire'. It proposes new linguistic criteria for intensionality and defends two semantic analyses for two different classes of intensional verbs. The paper also includes a systematic classification of intensional verbs according to the type of lexical meaning they involve.
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  6.  47
    (1 other version)Intensional transitive verbs and abstract clausal complementation.Marcel den Dikken, Richard Larson & Peter Ludlow - 2018 - In Alex Grzankowski & Michelle Montague, Non-Propositional Intentionality. Oxford, United Kingdom: Oxford University Press. pp. 46-94.
    There is a correlation between intensionality and syntax: intensionality manifests itself with all clausal complement constructions. For example, “Max imagined that Boris was approaching”. Although pervasive, there are apparent counterexamples. Sentences featuring intensional transitive verbs such as “Max wanted Boris” and “John imagined a unicorn”, exhibit intensionality effects but do not appear to have clausal complements. This chapter defends a view of intensional transitive constructions which is intuitive and quite familiar, but one which has also been widely (...)
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  7. Split intensionality: a new scope theory of de re and de dicto.Ezra Keshet - 2010 - Linguistics and Philosophy 33 (4):251-283.
    The traditional scope theory of intensionality (STI) (see Russell 1905; Montague 1973; Ladusaw 1977; Ogihara 1992, 1996; Stowell 1993) is simple, elegant, and, for the most part, empirically adequate. However, a few quite troubling counterexamples to this theory have lead researchers to propose alternatives, such as positing null situation pronouns (Percus 2000) or actuality operators (Kamp 1971; Cresswell 1990) in the syntax of natural language. These innovative theories do correct the undergeneration of the original scope theory, but at a (...)
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  8. Intensionality and propositionalism.Kristina Liefke - forthcoming - Annual Review of Linguistics:4.1-4.21.
    Propositionalism is the view that all intensional constructions (including nominal and clausal attitude reports) can be interpreted as relations to truth-evaluable propositional content. While propositionalism has long been silently assumed in semantics and the philosophy of language, it has only recently entered center stage in linguistic research. This article surveys the properties of intensional constructions, which require the introduction of fine-grained semantic values (intensions). It contrasts two ways of obtaining such values: through the introduction of either Russellian propositions or Frege-Church-style (...)
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  9. Intensional and higher-order modal logic: with applications to Montague semantics.Daniel Gallin - 1975 - New York: American Elsevier Pub. Co..
    CHAPTER 1. INTENSIONAL LOGIC §1. Natural Language and Intensional Logic When we speak of a theory of meaning for a natural language such as English, ...
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  10. Intensional and higher-order modal logic.Daniel Gallin - 1972 - [Berkeley,: [Berkeley.
    INTENSIONAL LOGIC §1. Natural Language and Intensional Logic When we speak of a theory of meaning for a natural language such as English, we have in mind an ...
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  11. Intensionality and Hyperintensionality.Daniel Nolan - 2019 - Routledge Encyclopedia of Philosophy.
    Routledge Encyclopedia entry on Intensionality and Hyperintensionality.
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  12. Tropes, Intensional Relative Clauses, and the Notion of a Variable Object.Friederike Moltmann - 2012 - In Aloni Maria, Kimmelman Vadim, Weidman Sassoon Galit, Roloefson Floris, Schulz Katrin & Westera Matthjis, Proceedings of the 18th Amsterdam Colloquium 2011. Springer.
    NPs with intensional relative clauses such as 'the impact of the book John needs to write' pose a significant challenge for trope theory (the theory of particularized properties), since they seem to refer to tropes that lack an actual bearer. This paper proposes a novel semantic analysis of such NPs on the basis of the notion of a variable object. The analysis avoids a range of difficulties that an alternative analysis based on the notion of an individual concept would face.
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  13.  91
    Intensional biases in affordance perception: an explanatory issue for radical enactivism.Silvano Zipoli Caiani - 2018 - Synthese 198 (Suppl 17):4183-4203.
    Radical Enactivism holds that the best explanation of basic forms of cognition is provided without involving information of any sort. According to this view, the ability to perceive visual affordances should be accounted for in terms of extensional covariations between variables spanning the agent’s body and the environment. Contrary to Radical Enactivism, I argue that the intensional properties of cognition cannot be ignored, and that the way in which an agent represents the world has consequences on the explanation of basic (...)
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  14. Intensional Relative Clauses and the Semantics of Variable Objects.Friederike Moltmann - 2019 - In Manfred Krifka & Schenner Mathias, Reconstruction Effects in Relative Clauses. De Gruyter Akademie Forschung. pp. 427-453..
    NPs with intensional relative clauses such as 'the book John needs to write' pose a significant challenge for semantic theory. Such NPs act like referential terms, yet they do not stand for a particular actual object. This paper will develop a semantic analysis of such NPs on the basis of the notion of a variable object. The analysis avoids a range of difficulties that a more standard analysis based on the notion of an individual concept would face. Most importantly, unlike (...)
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  15.  37
    Intensionalism and Propositional Attitudes.Juhani Yli-Vakkuri & Hawthorne John - 2021 - In Uriah Kriegel, Oxford Studies in Philosophy of Mind vol. 2. Oxford: Oxford University Press. pp. 114-174.
    This chapter explores solutions to a somewhat underappreciated family of puzzles concerning propositional attitudes generated by intensionalism—the view that necessarily equivalent propositions are identical. After presenting the puzzles informally, the chapter introduces the apparatus of higher-order logic, which allows one to quantify into the position of any type of expression, and makes possible a formally rigorous statement of the puzzles. Many philosophers will think that it’s quite obvious how one should respond to the puzzles—namely by treating them as refutations of (...)
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  16. Intensional Composition as Identity.Manuel Lechthaler - 2020 - Grazer Philosophische Studien 97 (2):294-318.
    Composition as Identity claims that a composite object is identical to its parts taken collectively. This is often understood as reducing the identity of composite objects to the identity of their parts. The author argues that Composition as Identity is not such a reduction. His central claim is that an intensional notion of composition, which is sensitive to the arrangement of the composing objects, avoids criticisms based on an extensional understanding of composition. The key is to understand composition as an (...)
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  17.  31
    Intensional Differences Between Programming Languages: A Conceptual and Practical Analysis.Paula Quinon - 2025 - Philosophies 10 (6):129.
    This paper investigates intensional differences between programming languages—understood as differences in how computational processes are expressed, structured, and specified rather than merely in what they compute. While such differences have been studied in classical models of computation, they remain underexplored in the context of programming languages. Yet, programming languages undeniably compute, and any account of what “computing” means must include the ways in which they do so. The paper first clarifies the extensional/intensional distinction and introduces a methodological framework to study (...)
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  18. Co-intensional properties and running afoul of Ockham’s Razor.J. J. Snodgrass - 2025 - Synthese 206 (2):1-15.
    Hyperintensionalists like myself hold that there are distinct but co-intensional properties. However, intensionalists object that accepting such properties violates Ockham’s Razor, the principle of parsimony that tells us that things should not be multiplied more than is necessary. After I distinguish between the qualitative parsimony and quantitative parsimony readings of Ockham’s Razor, I present two versions of this objection: the qualitative parsimony objection and the quantitative parsimony objection. I then give a reply to each version that exploits the fact that (...)
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  19. Chapter 5: Intensional Transitive Verbs and their 'Objects'.Friederike Moltmann - 2012 - In Abstract Objects and the Semantics of Natural Language. Oxford, United Kingdom: Oxford University Press.
    This chapter gives a truthmaker-based account of the semantics of 'reifying' quantifiers like 'something' when they act as complements of intensional transitive verbs ('need', 'look for'). It argues that such quantifiers range over 'variable satisfiers' of the attitudinal object described by the verb (e.g. the need or the search).
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  20. Self‐signs and intensional contexts.Ruth Garrett Millikan - 2022 - Mind and Language 38 (4):962-980.
    Paradigm intensional contexts result from the unmarked use of referential expressions as “self‐signs”, signs that refer to themselves as tokens, types, or members of Sellarsian “dot‐quoted” kinds. Self‐signing (but unquoted) linguistic expressions are more difficult to recognize than non‐linguistic self‐signs such as the color of a felt pen's casing that represents the color of ink inside. I will discuss non‐linguistic self‐signing, then examine self‐signing in quotation, in “said that …” contexts and in “believes that … ” contexts. The phenomenon of (...)
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  21.  44
    Intensional Harmony as Isomorphism.Paolo Pistone & Luca Tranchini - 2024 - In Thomas Piecha & Kai F. Wehmeier, Peter Schroeder-Heister on Proof-Theoretic Semantics. Cham: Springer Nature Switzerland. pp. 315-337.
    In the present paper we discuss a recent suggestion of Schroeder-Heister concerning the possibility of defining an intensional notion of harmony using isomorphism in second-order propositional logic. The latter is not an absolute notion, but its definition is relative to the choice of criteria for identity of proofs. In the paper, it is argued that in order to attain a satisfactory account of harmony, one has to consider a notion of identity stronger than the usual one (based on β- and (...)
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  22.  99
    Multiplying co-intensional properties: a reply to Streumer.J. J. Snodgrass - forthcoming - Inquiry: An Interdisciplinary Journal of Philosophy.
    Bart Streumer employs a reductio ad absurdum to show that a hyperintensional conception of properties has a multiplication problem; roughly, this conception of properties leads to the absurd result that we can multiply distinct but co-intensional properties without end. In this paper, I will explain why Streumer’s reductio fails to convince.
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  23.  71
    The Intensional Many - Conservativity Reclaimed.Harald Andreas Bastiaanse - 2014 - Journal of Philosophical Logic 43 (5):883-901.
    Following on Westerståhl’s argument that many is not Conservative [9], I propose an intensional account of Conservativity as well as intensional versions of EXT and Isomorphism closure. I show that an intensional reading of many can easily possess all three of these, and provide a formal statement and proof that they are indeed proper intensionalizations. It is then discussed to what extent these intensionalized properties apply to various existing readings of many.
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  24. Embracing intensionality: Paradoxicality and semi-truth operators in fixed point models.Nicholas Tourville & Roy T. Cook - 2020 - Logic Journal of the IGPL 28 (5):747-770.
    The Embracing Revenge account of semantic paradox avoids the expressive limitations of previous approaches based on the Kripkean fixed point construction by replacing a single language with an indefinitely extensible sequence of languages, each of which contains the resources to fully characterize the semantics of the previous languages. In this paper we extend the account developed in Cook (2008), Cook (2009), Schlenker (2010), and Tourville and Cook (2016) via the addition of intensional operators such as ``is paradoxical''. In this extended (...)
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  25. Intensional logics without interative axioms.David K. Lewis - 1974 - Journal of Philosophical Logic 3 (4):457-466.
  26. Fuzzy intensional semantics.Libor Běhounek & Ondrej Majer - 2018 - Journal of Applied Non-Classical Logics 28 (4):348-388.
    The study of weighted structures is one of the important trends in recent computer science. The aim of the article is to provide a weighted, many-valued version of classical intensional semantics formalised in the framework of higher-order fuzzy logics. We illustrate the apparatus on several variants of fuzzy S5-style modalities. The formalism is applicable to a broad array of weighted intensional notions, including alethic, epistemic, or probabilistic modalities, generalised quantifiers, counterfactual conditionals, dynamic and non-monotonic logics, and some more.
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  27. Intensionality from Self-Reference.T. Parent - manuscript
    This paper identifies a novel type of intensionality, arising entirely from a self-referential operation defined in purely formal terms. However, the result does not force revisions to classical logic since intensional operations are already excluded on principle. But the paper reveals an unexpected route by which intensionality can arise, showing that additional vigilance is needed to prevent such constructions.
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  28. Intensional transitive verbs.Graeme Forbes - 2012 - In Ed Zalta, Stanford Encyclopedia of Philosophy. Stanford, CA: Stanford Encyclopedia of Philosophy.
    A verb is transitive iff it usually occurs with a direct object, and in such occurrences it is said to occur transitively . Thus ‘ate’ occurs transitively in ‘I ate the meat and left the vegetables’, but not in ‘I ate then left’ (perhaps it is not the same verb ‘left’ in these two examples, but it seems to be the same ‘ate’). A verb is intensional if the verb phrase (VP) it forms with its complement is anomalous in at (...)
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  29. Extensional Scientific Realism vs. Intensional Scientific Realism.Seungbae Park - 2016 - Studies in History and Philosophy of Science Part A 59:46-52.
    Extensional scientific realism is the view that each believable scientific theory is supported by the unique first-order evidence for it and that if we want to believe that it is true, we should rely on its unique first-order evidence. In contrast, intensional scientific realism is the view that all believable scientific theories have a common feature and that we should rely on it to determine whether a theory is believable or not. Fitzpatrick argues that extensional realism is immune, while intensional (...)
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  30. Intensional models for the theory of types.Reinhard Muskens - 2007 - Journal of Symbolic Logic 72 (1):98-118.
    In this paper we define intensional models for the classical theory of types, thus arriving at an intensional type logic ITL. Intensional models generalize Henkin's general models and have a natural definition. As a class they do not validate the axiom of Extensionality. We give a cut-free sequent calculus for type theory and show completeness of this calculus with respect to the class of intensional models via a model existence theorem. After this we turn our attention to applications. Firstly, it (...)
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  31. Intensional logics and logical truth.M. J. Cresswell - 1972 - Journal of Philosophical Logic 1 (1):2-15.
  32. Intensional logic.Melvin Fitting - 2008 - Stanford Encyclopedia of Philosophy.
    There is an obvious difference between what a term designates and what it means. At least it is obvious that there is a difference. In some way, meaning determines designation, but is not synonymous with it. After all, “the morning star” and “the evening star” both designate the planet Venus, but don't have the same meaning. Intensional logic attempts to study both designation and meaning and investigate the relationships between them.
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  33.  99
    Intensional Transitives and Presuppositions.R. M. Sainsbury - 2008 - Critica 40 (120):129-139.
    My commentators point to respects in which the picture provided in Reference without Referents is incomplete. The picture provided no account of how sentences constructed from intensional verbs (like “John thought about Pegasus”) can be true when one of the referring expressions fails to refer. And it gave an incomplete, and possibly misleading, account of how to understand certain serious uses of fictional names, as in “Anna Karenina is more intelligent than Emma Bovary” and “Anna Karenina does not exist”. In (...)
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  34.  58
    Intensional Semantics for Syllogistics: what Leibniz and Vasiliev Have in Common.Antonina Konkova & Maria Legeydo - 2022 - Logic and Logical Philosophy 31 (2):339-356.
    This article deals with an alternative interpretation of syllogistics, different from the classical (extensional) one: an intensional one, in which subject and predicate are not associated with a set of individuals (the extension of the concept) but a set of attributes (the content of the concept). The authors of the paper draw attention to the fact that this approach was first proposed by Leibniz in works on logical calculus, which for a long time remained in the shadow of his other (...)
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  35. Implications of Intensional Perceptual Ascriptions for Relationalism, Disjunctivism, and Representationalism About Perceptual Experience.David Bourget - 2017 - Erkenntnis 84 (2):381-408.
    This paper aims to shed new light on certain philosophical theories of perceptual experience by examining the semantics of perceptual ascriptions such as “Jones sees an apple.” I start with the assumption, recently defended elsewhere, that perceptual ascriptions lend themselves to intensional readings. In the first part of the paper, I defend three theses regarding such readings: I) intensional readings of perceptual ascriptions ascribe phenomenal properties, II) perceptual verbs are not ambiguous between intensional and extensional readings, and III) intensional perceptual (...)
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  36. Free will and intensional operators.Fabio Lampert & John Waldrop - forthcoming - Canadian Journal of Philosophy.
    Arguments challenging the existence of free will frequently share a common structure, relying on variants of a principle we call Closure, according to which having no choice about a truth is preserved under entailment. We show that, under plausible assumptions, Closure is valid if and only if the `no choice' operator is intensional. By framing the debate in terms of the intensionality of this operator, this paper illuminates previously underappreciated constraints on defenses of Closure-based arguments against the existence of (...)
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  37. An Intensional Schrödinger Logic.Newton C. A. da Costa & Décio Krause - 1997 - Notre Dame Journal of Formal Logic 38 (2):179-194.
    We investigate the higher-order modal logic , which is a variant of the system presented in our previous work. A semantics for that system, founded on the theory of quasi sets, is outlined. We show how such a semantics, motivated by the very intuitive base of Schrödinger logics, provides an alternative way to formalize some intensional concepts and features which have been used in recent discussions on the logical foundations of quantum mechanics; for example, that some terms like 'electron' have (...)
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  38. Explicit Intensionalization, Anti‐Actualism, and How Smith's Murderer Might Not Have Murdered Smith.Bjørn Jespersen - 2005 - Dialectica 59 (3):285–314.
    The purpose of this article is to provide a non‐contradictory interpretation of sentences such as “Smith's murderer might not have murdered Smith”. An anti‐actualist, two‐dimensional framework including partial functions provides the basis for my solution. I argue for two claims. The modal profile of the proposition expressed by “The F might not have been an F” is complex: at any world where there is a unique F the proposition is true; at any world without a unique F the proposition has (...)
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  39. Intensionality and the gödel theorems.David D. Auerbach - 1985 - Philosophical Studies 48 (3):337--51.
    Philosophers of language have drawn on metamathematical results in varied ways. Extensionalist philosophers have been particularly impressed with two, not unrelated, facts: the existence, due to Frege/Tarski, of a certain sort of semantics, and the seeming absence of intensional contexts from mathematical discourse. The philosophical import of these facts is at best murky. Extensionalists will emphasize the success and clarity of the model theoretic semantics; others will emphasize the relative poverty of the mathematical idiom; still others will question the aptness (...)
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  40.  99
    An intensional logic for mass terms.Alice Ter Meulen - 1981 - Philosophical Studies 40 (1):105 - 125.
  41. “Ought” and Intensionality.Junhyo Lee - 2021 - Synthese 199:4621-4643.
    The syntactic structure of the deontic “ought” has been much debated in philosophy and linguistics. Schroeder argues that the deontic “ought” is syntactically ambiguous in the sense that it can be associated with either a control or raising construction. He distinguishes between deliberative and evaluative “ought”s and argues that the deliberative “ought” is control while the evaluative “ought” is raising. However, if there is a control sense of “ought,” it implies that there is a sense of “ought” in which the (...)
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  42. An intensional interpretation of ockham's theory of supposition.Catarina Dutilh Novaes - 2008 - Journal of the History of Philosophy 46 (3):pp. 365-393.
    According to a widespread view in medieval scholarship, theories of supposition are the medieval counterparts of theories of reference, and are thus essentially extensional theories. I propose an alternative interpretation: theories of supposition are theories of properties of terms, but whose aim is to allow for the interpretation of sentences. This holds especially of Ockham’s supposition theory, which is the main object of analysis in this paper. In particular, I argue for my intensional interpretation of his theory on the basis (...)
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  43. Intensional Entities.George Bealer - 1996 - In Edward Craig, Routledge Encyclopedia of Philosophy: Genealogy to Iqbal. New York: Routledge. pp. 803-7.
  44. Indexicality, intensionality, and relativist post-semantics.Stefano Predelli - 2012 - Synthese 184 (2):121-136.
    This essay argues that relativist semantics provide fruitful frameworks for the study of the relationships between meaning and truth-conditions, and consequently for the analysis of the logical properties of expressions. After a discussion of the role of intensionality and indexicality within classic double-indexed semantics, I explain that the non-relativistic identification of the parameters needed for the definition of truth and for the interpretation of indexicals is grounded on considerations that are irrelevant for the assessment of the relationships between meaning (...)
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  45. (1 other version)Causality, intensionality and identity: Mind body interaction in Spinoza.Olli Koistinen - 1996 - Ratio 9 (1):23-38.
    According to Spinoza mental events and physical events are identical. What makes Spinoza's identity theory tempting is that it solves the problem of mind body interaction rather elegantly: mental events and physical events can be causally related to each other because mental events are physical events. However, Spinoza seems to deny that there is any causal interaction between mental and physical events. My aim is to show that Spinoza's apparent denial of mind body interaction can be reconciled with the identity (...)
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  46. Intensionality.Graeme Forbes & Jennifer Saul - 2002 - Aristotelian Society Supplementary Volume 76:75-119.
    [Graeme Forbes] In I, I summarize the semantics for the relational/notional distinction for intensional transitives developed in Forbes. In II-V I pursue issues about logical consequence which were either unsatisfactorily dealt with in that paper or, more often, not raised at all. I argue that weakening inferences, such as 'Perseus seeks a mortal gorgon, therefore Perseus seeks a gorgon', are valid, but that disjunction inferences, such as 'Perseus seeks a mortal gorgon, therefore Perseus seeks a mortal gorgon or an immortal (...)
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  47. Intensional Logic — Beyond First Order.Melvin Fitting - unknown
    Classical first-order logic can be extended in two different ways to serve as a foundation for mathematics: introduce higher orders, type theory, or introduce sets. As it happens, both approaches have natural analogs for quantified modal logics, both approaches date from the 1960’s, one is not very well-known, and the other is well-known as something else. I will present the basic semantic ideas of both higher order intensional logic, and intensional set theory. Before doing so, I’ll quickly sketch some necessary (...)
     
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  48. Intensional expressions.Kazimierz Ajdukiewicz - 1967 - Studia Logica 20 (1):63-86.
  49.  46
    Intensionality of Consequence and Identity of Proofs in Prawitz’s Theory of Grounds.Antonio Piccolomini D’Aragona - 2025 - Logica Universalis 19 (1):23-46.
    I discuss two possible ways for dealing with a constructive, proof-based notion of logical consequence. The first, qualified as _extensional_, amounts to the idea that a given proof-structure is _justifiable_ under every interpretation of the non-logical terminology it involves. The second, qualified as _intensional_, requires on the contrary that the given proof-structure be _justified_ independently of its non-logical meaning. Contrarily to the extensional approach, the intensional account calls for a prior treatment of the notion of identity of proofs. Identity can (...)
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  50. Inscriptionalism and intensionality.David Parsons - 2013 - Philosophia 41 (2):567-585.
    Intensional contexts are typically characterised by an apparent failure of either (A) the principle of the inter-substitution of co-referring terms salva veritate, or (B) existential generalisation. The difficulties which are seen to occur do so in contexts involving either modality or the propositional attitudes. In this paper attempts are made to determine whether or not Scheffler’s inscriptional analysis can provide a viable means of accounting for the problems which are thought to occur in intensional contexts. Somewhat unexpectedly, little effort has (...)
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