70 found
Order:
See also
Gabriel Sandu
University of Helsinki
  1. Fitch’s Paradox and Ceteris Paribus Modalities.Carlo Proietti & Gabriel Sandu - 2010 - Synthese 173 (1):75-87.
    The paper attempts to give a solution to the Fitch's paradox though the strategy of the reformulation of the paradox in temporal logic, and a notion of knowledge which is a kind of ceteris paribus modality. An analogous solution has been offered in a different context to solve the problem of metaphysical determinism.
    Direct download (9 more)  
     
    Export citation  
     
    Bookmark   4 citations  
  2. The Fallacies of the New Theory of Reference.Jaakko Hintikka & Gabriel Sandu - 1995 - Synthese 104 (2):245 - 283.
    The so-called New Theory of Reference (Marcus, Kripke etc.) is inspired by the insight that in modal and intensional contexts quantifiers presuppose nondescriptive unanalyzable identity criteria which do not reduce to any descriptive conditions. From this valid insight the New Theorists fallaciously move to the idea that free singular terms can exhibit a built-in direct reference and that there is even a special class of singular terms (proper names) necessarily exhibiting direct reference. This fallacious move has been encouraged by a (...)
    Direct download (4 more)  
     
    Export citation  
     
    Bookmark   19 citations  
  3.  12
    Bivalence and Future Contingency.Carlo Proietti, Gabriel Sandu & Francois Rivenc - forthcoming - In Vincent Hendricks & Sven Ove Hansson (eds.), Handbook of Formal Philosophy. Springer.
    This work presents an overview of four different approaches to the problem of future contingency and determinism in temporal logics. All of them are bivalent, viz. they share the assumption that propositions concerning future contingent facts have a determinate truth-value. We introduce Ockhamism, Peirceanism, Actualism and T x W semantics, the four most relevant bivalent alternatives in this area, and compare them from the point of view of their expressiveness and their underlying metaphysics of time.
    No categories
    Direct download  
     
    Export citation  
     
    Bookmark  
  4.  52
    On the Logic of Informational Independence and its Applications.Gabriel Sandu - 1993 - Journal of Philosophical Logic 22 (1):29 - 60.
    We shall introduce in this paper a language whose formulas will be interpreted by games of imperfect information. Such games will be defined in the same way as the games for first-order formulas except that the players do not have complete information of the earlier course of the game. Some simple logical properties of these games will be stated together with the relation of such games of imperfect information to higher-order logic. Finally, a set of applications will be outlined.
    Direct download (4 more)  
     
    Export citation  
     
    Bookmark   18 citations  
  5. From Lagrange to Frege: Functions and Expressions.Gabriel Sandu, Marco Panza & Hourya Benis-Sinaceur - 2015 - In Gabriel Sandu, Marco Panza & Hourya Benis-Sinaceur (eds.), Functions and Generality of Logic. Springer Verlag.
    Both Frege's Grundgesetze, and Lagrange's treatises on analytical functions pursue a foundational purpose. Still, the former's program is not only crucially different from the latter's. It also depends on a different idea of what foundation of mathematics should be like . Despite this contrast, the notion of function plays similar roles in their respective programs. The purpose of my paper is emphasising this similarity. In doing it, I hope to contribute to a better understanding of Frege's logicism, especially in relation (...)
     
    Export citation  
     
    Bookmark   3 citations  
  6. Functions and Generality of Logic.Gabriel Sandu, Marco Panza & Hourya Benis-Sinaceur (eds.) - 2015 - Springer Verlag.
    Part I of Frege’s Grundgesetze is devoted to the “exposition [Darlegung]” of his formal system.
     
    Export citation  
     
    Bookmark   2 citations  
  7.  16
    Equilibrium Semantics of Languages of Imperfect Information.Merlijn Sevenster & Gabriel Sandu - 2010 - Annals of Pure and Applied Logic 161 (5):618-631.
    In this paper, we introduce a new approach to independent quantifiers, as originally introduced in Informational independence as a semantic phenomenon by Hintikka and Sandu [9] under the header of independence-friendly languages. Unlike other approaches, which rely heavily on compositional methods, we shall analyze independent quantifiers via equilibriums in strategic games. In this approach, coined equilibrium semantics, the value of an IF sentence on a particular structure is determined by the expected utility of the existential player in any of the (...)
    Direct download (4 more)  
     
    Export citation  
     
    Bookmark   6 citations  
  8.  83
    Aspects of Compositionality.Gabriel Sandu & Jaakko Hintikka - 2001 - Journal of Logic, Language and Information 10 (1):49-61.
    We introduce several senses of the principle ofcompositionality. We illustrate the difference between them with thehelp of some recent results obtained by Cameron and Hodges oncompositional semantics for languages of imperfect information.
    Direct download (3 more)  
     
    Export citation  
     
    Bookmark   10 citations  
  9.  9
    Read on the Liar.Gabriel Sandu - 2011 - Discusiones Filosóficas 12 (19):277 - 290.
  10. Games in Philosophical Logic.Ahti Pietarinen & Gabriel Sandu - 1999 - Nordic Journal of Philosophical Logic 4:143-174.
  11.  14
    The Skeleton in Frege's Cupboard: The Standard Versus Nonstandard Distinction.Jaakko Hintikka & Gabriel Sandu - 1992 - Journal of Philosophy 89 (6):290.
  12.  64
    Henkin Quantifiers and the Definability of Truth.Tapani Hyttinen & Gabriel Sandu - 2000 - Journal of Philosophical Logic 29 (5):507-527.
    Henkin quantifiers have been introduced in Henkin (1961). Walkoe (1970) studied basic model-theoretical properties of an extension $L_{*}^{1}$ (H) of ordinary first-order languages in which every sentence is a first-order sentence prefixed with a Henkin quantifier. In this paper we consider a generalization of Walkoe's languages: we close $L_{*}^{1}$ (H) with respect to Boolean operations, and obtain the language L¹(H). At the next level, we consider an extension $L_{*}^{2}$ (H) of L¹(H) in which every sentence is an L¹(H)-sentence prefixed with (...)
    Direct download (5 more)  
     
    Export citation  
     
    Bookmark   6 citations  
  13.  74
    The Skeleton in Frege's Cupboard: The Standard Versus Nonstandard Distinction.Jaakko Hintikka & Gabriel Sandu - 1992 - Journal of Philosophy 89 (6):290-315.
    Direct download (6 more)  
     
    Export citation  
     
    Bookmark   8 citations  
  14.  63
    IF Logic and the Foundations of Mathematics.Gabriel Sandu & Tapani Hyttinen - 2001 - Synthese 126 (1):37-47.
  15.  46
    Between Proof and Truth.Julien Boyer & Gabriel Sandu - 2012 - Synthese 187 (3):821-832.
    We consider two versions of truth as grounded in verification procedures: Dummett's notion of proof as an effective way to establish the truth of a statement and Hintikka's GTS notion of truth as given by the existence of a winning strategy for the game associated with a statement. Hintikka has argued that the two notions should be effective and that one should thus restrict one's attention to recursive winning strategies. In the context of arithmetic, we show that the two notions (...)
    Direct download (4 more)  
     
    Export citation  
     
    Bookmark   2 citations  
  16.  36
    Independendly‐Friendly Logic: Dependence and Independence of Quantifiers in Logic.Gabriel Sandu - 2012 - Philosophy Compass 7 (10):691-711.
    Independence‐Friendly logic introduced by Hintikka and Sandu studies patterns of dependence and independence of quantifiers which exceed those found in ordinary first‐order logic. The present survey focuses on the game‐theoretical interpretation of IF‐logic, including connections to solution concepts in classical game theory, but we shall also present its compositional interpretation together with its connections to notions of dependence and dependence between terms.
    Direct download (4 more)  
     
    Export citation  
     
    Bookmark   2 citations  
  17. What is Logic?Hintikka Jaakko & Gabriel Sandu - 2006 - In Dale Jacquette (ed.), Philosophy of Logic. North Holland. pp. 13--39.
    It is far from clear what is meant by logic or what should be meant by it. It is nevertheless reasonable to identify logic as the study of inferences and inferential relations. The obvious practical use of logic is in any case to help us to reason well, to draw good inferences. And the typical form the theory of any part of logic seems to be a set of rules of inference. This answer already introduces some structure into a discussion (...)
     
    Export citation  
     
    Bookmark  
  18.  55
    Uses and Misuses of Frege’s Ideas.Jaakko Hintikka & Gabriel Sandu - 1994 - The Monist 77 (3):278-293.
    Frege has one magnificent achievement to his credit, viz. the creation of modern formal logic. As a philosopher and as a theoretical logician, he was nevertheless as parochial as he was, geographically speaking. Hence Frege’s concepts and problems offer singularly unfortunate starting points for constructive work in the foundations of logic and mathematics. Even if he is right in some of his views, they depend on severely restrictive assumptions that have to be noted and eliminated. These restrictive assumptions have not (...)
    Direct download (6 more)  
     
    Export citation  
     
    Bookmark   2 citations  
  19.  68
    Stenius on Logical Constants.Markku Keinänen & Gabriel Sandu - 1996 - In Logica Yearbook '96. Praha: pp. 93-106.
    The article presents Erik Stenius' conception of logical constants and compares it with the standard approach.
    Direct download  
     
    Export citation  
     
    Bookmark  
  20.  73
    Joint Action and Group Action Made Precise.Gabriel Sandu & Raimo Tuomela - 1995 - Synthese 105 (3):319 - 345.
    The paper argues that there are two main kinds of joint action, direct joint bringing about (or performing) something (expressed in terms of a DO-operator) and jointly seeing to it that something is the case (expressed in terms of a Stit-operator). The former kind of joint action contains conjunctive, disjunctive and sequential action and its central subkinds. While joint seeing to it that something is the case is argued to be necessarily intentional, direct joint performance can also be nonintentional. Actions (...)
    Direct download (4 more)  
     
    Export citation  
     
    Bookmark   5 citations  
  21.  54
    On the Theory of Anaphora: Dynamic Predicate Logic Vs. Game-Theoretical Semantics. [REVIEW]Gabriel Sandu - 1997 - Linguistics and Philosophy 20 (2):147-174.
  22.  83
    Signalling In Languages With Imperfect Information.Gabriel Sandu - 2001 - Synthese 127 (1):21-34.
    This paper is a short survey of different languages with imperfect information introduced in. The imperfect information concerns both quantifiers and connectives. At the end, I will sketch a connection between these languages and linear logic.
    Direct download (4 more)  
     
    Export citation  
     
    Bookmark  
  23. A Revolution In Logic?Jaakko Hintikka & Gabriel Sandu - 1996 - Nordic Journal of Philosophical Logic 1:169-183.
     
    Export citation  
     
    Bookmark   4 citations  
  24.  61
    Introduction.Juliette Kennedy & Gabriel Sandu - 2003 - Synthese 137 (1):1-1.
  25. What is a Quantifier?Jaakko Hintikka & Gabriel Sandu - 1994 - Synthese 98 (1):113 - 129.
    Direct download (4 more)  
     
    Export citation  
     
    Bookmark   3 citations  
  26.  18
    Logic and Linguistics in the Twentieth Century.Alessandro Lenci & Gabriel Sandu - 2008 - In Leila Haaparanta (ed.), The Development of Modern Logic. Oxford University Press.
    This chapter begins with a discussion of the three phases of the interaction between logic and linguistics on the nature of universal grammar. It then attempts to reconstruct the dynamics and interactions between these approaches in logic and in linguistic theory, which represent the major landmarks in the quest for the individuation of the universal structure of language.
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark   2 citations  
  27.  24
    Logic in Games, by van Benthem, Johan: Cambridge, MA: The MIT Press, 2014, Pp. Xv + 547, US$50. [REVIEW]Gabriel Sandu - 2016 - Australasian Journal of Philosophy 94 (3):620-624.
    Direct download (4 more)  
     
    Export citation  
     
    Bookmark  
  28.  39
    Partially Ordered Connectives.Gabriel Sandu & Jouko Väänänen - 1992 - Zeitschrift fur mathematische Logik und Grundlagen der Mathematik 38 (1):361-372.
    We show that a coherent theory of partially ordered connectives can be developed along the same line as partially ordered quantification. We estimate the expressive power of various partially ordered connectives and use methods like Ehrenfeucht games and infinitary logic to get various undefinability results.
    Direct download (3 more)  
     
    Export citation  
     
    Bookmark   3 citations  
  29.  54
    Logic and Semantics in the Twentieth Century.Gabriel Sandu & Tuomo Aho - 2008 - In Leila Haaparanta (ed.), The Development of Modern Logic. Oxford University Press. pp. 562.
    This chapter explores logical semantics, that is, the structural meaning of logical expressions like connectives, quantifiers, and modalities. It focuses on truth-theoretical semantics for formalized languages, a tradition emerging from Carnap's and Tarski's work in the first half of the last century that specifies the meaning of these expressions in terms of the truth-conditions of the sentences in which they occur. It considers Tarski-style definitions of the semantics of a given language in a stronger metalanguage, Tarski's impossibility results, and attempts (...)
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark   1 citation  
  30.  94
    If-Logic and Truth-Definition.Gabriel Sandu - 1998 - Journal of Philosophical Logic 27 (2):143-164.
    In this paper we show that first-order languages extended with partially ordered connectives and partially ordered quantifiers define, under a certain interpretation, their own truth-predicate. The interpretation in question is in terms of games of imperfect information. This result is compared with those of Kripke and Feferman.
    Direct download (5 more)  
     
    Export citation  
     
    Bookmark   2 citations  
  31. Equilibrium Semantics.Gabriel Sandu & Merlijn Sevenster - forthcoming - Annals of Pure and Applied Logic.
     
    Export citation  
     
    Bookmark   1 citation  
  32.  55
    Deflationism and Arithmetical Truth.Tapani Hyttinen & Gabriel Sandu - 2004 - Dialectica 58 (3):413–426.
  33.  17
    Tarski’s Guilty Secret: Compositionality.Jaakko Hintikka & Gabriel Sandu - 1999 - Vienna Circle Institute Yearbook 6:217-230.
    Tarski has exerted enormous influence not only on the development of mathematical logic, but on twentieth-century philosophy and philosophical analysis. This influence has been twofold, with the two components pulling in a sense in opposite directions. A comparison with the influence of the Vienna Circle provides an instructive vantage point in viewing Tarski’s influence. On the one hand, Tarski has provided powerful tools for logical analysis in philosophy. His first and most important contribution was to show that — and how (...)
    Direct download  
     
    Export citation  
     
    Bookmark   3 citations  
  34.  10
    Games and Logic.Gabriel Sandu - 2013 - The Baltic International Yearbook of Cognition, Logic and Communication 8 (1).
    The idea behind these games is to obtain an alternative characterization of logical notions cherished by logicians such as truth in a model, or provability. We offer a quick survey of Hintikka's evaluation games, which offer an alternative notion of truth in a model for first-order langauges. These are win-lose, extensive games of perfect information. We then consider a variation of these games, IF games, which are win-lose extensive games of imperfect information. Both games presuppose that the meaning of the (...)
    Direct download (5 more)  
     
    Export citation  
     
    Bookmark   1 citation  
  35.  4
    Entre Logique Et Langage.François Rivenc & Gabriel Sandu - 2009 - Vrin.
    Linguistique et philosophie logique du langage : deux traditions de pensée que bien des choses opposent. La première est plutôt mentaliste, et orientée vers l’étude de la syntaxe; la seconde, plus préoccupée de sémantique, cherche volontiers le sens dans les conditions de vérité des phrases. Ce portrait n’est pas faux, mais il est incomplet : entre logique et linguistique, les relations n’ont pas été, ne sont pas que d’opposition.Dans cet ouvrage, les auteurs proposent une sorte d’histoire conceptuelle des interactions fécondes (...)
    No categories
    Direct download  
    Translate
     
     
    Export citation  
     
    Bookmark   1 citation  
  36. Ramsey and the Notion of Arbitrary Function.Gabriel Sandu - 2005 - In Maria J. Frapolli Sanz (ed.), Continuum Studies in British Philosophy. London, Great Brittain: Continuum International Publishing Group. pp. 237-256.
    In his article The Foundations of Mathematics (1925) Ramsey was concerned with the nature of the statements of 'pure mathematics' and the way these statements differ from those in empirical sciences. He thought that the answer given to these questions by Hilbert and the formalist school according to which mathematical statements are meaningless formulas, is unsatisfactory for several reasons, which will not be discussed here. He also expressed serious doubts about the intuitionist program developed by Brouwer and Weyl. It is (...)
     
    Export citation  
     
    Bookmark   2 citations  
  37.  51
    Jaakko Hintikka in Memoriam.Gabriel Sandu - 2015 - Theoria 81 (4):289-292.
  38.  27
    If Logic, Game-Theoretical Semantics, and the Philosophy of Science.Ahti-Veikko Pietarinen & Gabriel Sandu - 2004 - In S. Rahman J. Symons (ed.), Logic, Epistemology, and the Unity of Science. Kluwer Academic Publisher. pp. 105--138.
    Direct download  
     
    Export citation  
     
    Bookmark   1 citation  
  39.  98
    Some Aspects of Negation in English.Gabriel Sandu - 1994 - Synthese 99 (3):345 - 360.
    I introduce a formal language called the language of informational independence (IL-language, for short) that extends an ordinary first-order language in a natural way. This language is interpreted in terms of semantical games of imperfect information. In this language, one can define two negations: (i) strong or dual negation, and (ii) weak or contradictory negation. The latter negation, unlike the former, can occur only sentence-initially. Then I argue that, to a certain extent, the two negations match the distinction existing in (...)
    Direct download (4 more)  
     
    Export citation  
     
    Bookmark  
  40.  93
    Dependence Logic: A New Approach to Independence Friendly Logic – by Jouko Väänänen.Gabriel Sandu - 2009 - Theoria 75 (1):52-64.
  41.  8
    Partially Ordered Connectives and Finite Graphs.Lauri Hella & Gabriel Sandu - 1995 - In M. Krynicki, M. Mostowski & L. Szczerba (eds.), Quantifiers: Logics, Models and Computation. Kluwer Academic Publishers. pp. 79--88.
    Direct download  
     
    Export citation  
     
    Bookmark   2 citations  
  42. IF First-Order Logic and Truth-Definitions.Gabriel Sandu - 1997 - Journal of Philosophical Logic 26.
     
    Export citation  
     
    Bookmark   2 citations  
  43.  38
    Numerical Quantifiers in Game-Theoretical Semantics.Gyula Klima & Gabriel Sandu - 1990 - Theoria 56 (3):173-192.
    Direct download (3 more)  
     
    Export citation  
     
    Bookmark   1 citation  
  44.  49
    Minimalism and the Definability of Truth.Gabriel Sandu - 2000 - The Proceedings of the Twentieth World Congress of Philosophy 2000:143-153.
    In this paper I am going to inquire to what extent the main requirements of a minimalist theory of truth and falsity (as formulated, for example, by Horwich and Field) can be consistently implemented in a formal theory. I will discuss several of the existing logical theories of truth, including Tarski-type (un)definability results, Kripke’s partial interpretation of truth and falsity, Barwise and Moss’ theory based upon non-well-founded sets, McGee’s treatment of truth as a vague predicate, and Hintikka’s languages of imperfect (...)
    Direct download (3 more)  
     
    Export citation  
     
    Bookmark  
  45. Compositional Semantics.Gabriel Sandu - 2006 - ProtoSociology 23.
     
    Export citation  
     
    Bookmark  
  46.  62
    Partially Interpreted Relations and Partially Interpreted Quantifiers.Gabriel Sandu - 1998 - Journal of Philosophical Logic 27 (6):587-601.
    Logics in which a relation R is semantically incomplete in a particular universe E, i.e. the union of the extension of R with its anti-extension does not exhaust the whole universe E, have been studied quite extensively in the last years. (Cf. van Benthem (1985), Blamey (1986), and Langholm (1988), for partial predicate logic; Muskens (1996), for the applications of partial predicates to formal semantics, and Doherty (1996) for applications to modal logic.) This is not so with semantically incomplete generalized (...)
    Direct download (5 more)  
     
    Export citation  
     
    Bookmark  
  47.  28
    Review Essay.Gabriel Sandu & Jan Woleński - 1994 - Synthese 101 (1):121-127.
    Direct download  
     
    Export citation  
     
    Bookmark  
  48.  44
    Erratum To: Between Proof and Truth.Julien Boyer & Gabriel Sandu - 2012 - Synthese 187 (3):973-974.
    Direct download (4 more)  
     
    Export citation  
     
    Bookmark  
  49.  21
    Metaphor and the Varieties of Lexical Meaning.Jaakko Hintikka & Gabriel Sandu - 1990 - Dialectica 44 (1‐2):55-78.
    Direct download (3 more)  
     
    Export citation  
     
    Bookmark  
  50.  13
    On a Combination of Truth and Probability: Probabilistic Independence-Friendly Logic.Gabriel Sandu - 2015 - In Iulian D. Toader, Gabriel Sandu & Ilie Pȃrvu (eds.), Romanian Studies in Philosophy of Science. Springer Verlag.
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
1 — 50 / 70