68 found
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  1. The Evidential Conditional.Vincenzo Crupi & Andrea Iacona - 2022 - Erkenntnis 87 (6):2897-2921.
    This paper outlines an account of conditionals, the evidential account, which rests on the idea that a conditional is true just in case its antecedent supports its consequent. As we will show, the evidential account exhibits some distinctive logical features that deserve careful consideration. On the one hand, it departs from the material reading of ‘if then’ exactly in the way we would like it to depart from that reading. On the other, it significantly differs from the non-material accounts which (...)
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  2. Valid Arguments as True Conditionals.Andrea Iacona - 2023 - Mind 132 (526):428-451.
    This paper explores an idea of Stoic descent that is largely neglected nowadays, the idea that an argument is valid when the conditional formed by the conjunction of its premises as antecedent and its conclusion as consequent is true. As it will be argued, once some basic features of our naıve understanding of validity are properly spelled out, and a suitable account of conditionals is adopted, the equivalence between valid arguments and true conditionals makes perfect sense. The account of validity (...)
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  3. Three Ways of Being Non-Material.Vincenzo Crupi & Andrea Iacona - 2022 - Studia Logica 110:47-93.
    This paper develops a probabilistic analysis of conditionals which hinges on a quantitative measure of evidential support. In order to spell out the interpreta- tion of ‘if’ suggested, we will compare it with two more familiar interpretations, the suppositional interpretation and the strict interpretation, within a formal framework which rests on fairly uncontroversial assumptions. As it will emerge, each of the three interpretations considered exhibits specific logical features that deserve separate consideration.
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  4. The Logic of the Evidential Conditional.Eric Raidl, Andrea Iacona & Vincenzo Crupi - 2022 - Review of Symbolic Logic 15 (3):758-770.
    In some recent works, Crupi and Iacona have outlined an analysis of ‘if’ based on Chrysippus’ idea that a conditional holds whenever the negation of its consequent is incompatible with its antecedent. This paper presents a sound and complete system of conditional logic that accommodates their analysis. The soundness and completeness proofs that will be provided rely on a general method elaborated by Raidl, which applies to a wide range of systems of conditional logic.
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  5. Outline of a Theory of Reasons.Vincenzo Crupi & Andrea Iacona - 2023 - Philosophical Quarterly 73 (1):117-142.
    This paper investigates the logic of reasons. Its aim is to provide an analysis of the sentences of the form ‘p is a reason for q’ that yields a coherent account of their logical properties. The idea that we will develop is that ‘p is a reason for q’ is acceptable just in case a suitably defined relation of incompatibility obtains between p and ¬q. As we will suggest, a theory of reasons based on this idea can solve three challenging (...)
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  6. Logical Form: Between Logic and Natural Language.Andrea Iacona - 2018 - Cham, Switzerland: Springer Verlag.
    Logical form has always been a prime concern for philosophers belonging to the analytic tradition. For at least one century, the study of logical form has been widely adopted as a method of investigation, relying on its capacity to reveal the structure of thoughts or the constitution of facts. This book focuses on the very idea of logical form, which is directly relevant to any principled reflection on that method. Its central thesis is that there is no such thing as (...)
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  7.  99
    Conditionals: Inferentialism Explicated.Vincenzo Crupi & Andrea Iacona - forthcoming - Erkenntnis.
    According to the view of conditionals named 'inferentialism', a conditional holds when its consequent can be inferred from its antecedent. This paper identifies some major challenges that inferentialism has to face, and uses them to assess three accounts of conditionals: one is the classical strict account, the other two have recently been proposed by Douven and Rott. As will be shown, none of the three proposals meets all challenges in a fully satisfactory way. We argue through novel formal results that (...)
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  8. Strictness and connexivity.Andrea Iacona - 2021 - Inquiry: An Interdisciplinary Journal of Philosophy 64 (10):1024-1037.
    .This paper discusses Aristotle’s thesis and Boethius’ thesis, the most distinctive theorems of connexive logic. Its aim is to show that, although there is something plausible in Aristotle’s thesis and Boethius’ thesis, the intuitions that may be invoked to motivate them are consistent with any account of indicative conditionals that validates a suitably restricted version of them. In particular, these intuitions are consistent with the view that indicative conditionals are adequately formalized as strict conditionals.
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  9. On the Logical Form of Concessive Conditionals.Vincenzo Crupi & Andrea Iacona - 2022 - Journal of Philosophical Logic 51 (3):633-651.
    This paper outlines an account of concessive conditionals that rests on two main ideas. One is that the logical form of a sentence as used in a given context is determined by the content expressed by the sentence in that context. The other is that a coherent distinction can be drawn between a reading of ‘if’ according to which a conditional is true when its consequent holds on the supposition that its antecedent holds, and a stronger reading according to which (...)
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  10. Postsemantic Peirceanism.Andrea Iacona & Samuele Iaquinto - 2023 - American Philosophical Quarterly 60:249-256.
    There are essentially two ways to develop the Peircean idea that future contingents are all false. One is to provide a quantificational semantics for "will," as is usually done. The other is to define a quantificational postsemantics based on a linear semantics for "will." As we will suggest, the second option, although less conventional, is more plausible than the first in some crucial respects. The postsemantic approach overcomes three major troubles that have been raised in connection with Peirceanism: the apparent (...)
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  11. Credible Futures.Andrea Iacona & Samuele Iaquinto - 2021 - Synthese 199:10953-10968.
    This paper articulates in formal terms a crucial distinction concerning future contingents, the distinction between what is true about the future and what is reasonable to believe about the future. Its key idea is that the branching structures that have been used so far to model truth can be employed to define an epistemic property, credibility, which we take to be closely related to knowledge and assertibility, and which is ultimately reducible to probability. As a result, two kinds of claims (...)
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  12. Knowledge of Future Contingents.Andrea Iacona - 2022 - Philosophical Studies 179 (2):447-467.
    This paper addresses the question whether future contingents are knowable, that is, whether one can know that things will go a certain way even though it is possible that things will not go that way. First I will consider a long-established view that implies a negative answer, and draw attention to some endemic problems that affect its credibility. Then I will sketch an alternative line of thought that prompts a positive answer: future contingents are knowable, although our epistemic access of (...)
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  13.  48
    An Axiomatic System for Concessive Conditionals.Eric Raidl, Andrea Iacona & Vincenzo Crupi - 2023 - Studia Logica 112 (1):343-363.
    According to the analysis of concessive conditionals suggested by Crupi and Iacona, a concessive conditional $$p{{\,\mathrm{\hookrightarrow }\,}}q$$ p ↪ q is adequately formalized as a conjunction of conditionals. This paper presents a sound and complete axiomatic system for concessive conditionals so understood. The soundness and completeness proofs that will be provided rely on a method that has been employed by Raidl, Iacona, and Crupi to prove the soundness and completeness of an analogous system for evidential conditionals.
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  14. Two Notions of Logical Form.Andrea Iacona - 2016 - Journal of Philosophy 113 (12):617-643.
    This paper claims that there is no such thing as the correct answer to the question of what is logical form: two significantly different notions of logical form are needed to fulfil two major theoretical roles that pertain respectively to logic and semantics. The first part of the paper outlines the thesis that a unique notion of logical form fulfils both roles, and argues that the alleged best candidate for making it true is unsuited for one of the two roles. (...)
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  15. Ockhamism without Thin Red Lines.Andrea Iacona - 2014 - Synthese 191 (12):2633-2652.
    This paper investigates the logic of Ockhamism, a view according to which future contingents are either true or false. Several attempts have been made to give rigorous shape to this view by defining a suitable formal semantics, but arguably none of them is fully satisfactory. The paper draws attention to some problems that beset such attempts, and suggests that these problems are different symptoms of the same initial confusion, in that they stem from the unjustified assumption that the actual course (...)
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  16. Probability, Evidential Support, and the Logic of Conditionals.Vincenzo Crupi & Andrea Iacona - 2021 - Argumenta 6:211-222.
    Once upon a time, some thought that indicative conditionals could be effectively analyzed as material conditionals. Later on, an alternative theoretical construct has prevailed and received wide acceptance, namely, the conditional probability of the consequent given the antecedent. Partly following critical remarks recently ap- peared in the literature, we suggest that evidential support—rather than conditional probability alone—is key to understand indicative conditionals. There have been motivated concerns that a theory of evidential conditionals (unlike their more tra- ditional counterparts) cannot generate (...)
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  17. Faultless or Disagreeement.Andrea Iacona - 2008 - In Manuel García-Carpintero & Max Kölbel (eds.), Relative truth. New York: Oxford University Press. pp. 287.
    Among the various motivations that may lead to the idea that truth is relative in some non-conventional sense, one is that the idea helps explain how there can be ‘‘ faultless disagreements’’, that is, situations in which a person A judges that p, a person B judges that not-p, but neither A nor B is at fault. The line of argument goes as follows. It seems that there are faultless disagreements. For example, A and B may disagree on culinary matters (...)
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  18. Vagueness and Relative Truth.Andrea Iacona - forthcoming - Philosophical Quarterly.
    According to a view called 'nihilism', sentences containing vague expressions cannot strictly speaking be true or false, because they lack definite truth conditions. While most theorists of vagueness tend to regard nihilism as a hopeless view, a few isolated attempts have been made to defend it. This paper aims to develop such attempts in a new direction by showing how nihilism, once properly spelled out, can meet three crucial explanatory challenges that respectively concern truth, assertibility, and communication.
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  19. The Metaphysics of Ockhamism.Andrea Iacona - 2022 - In Alessio Santelli (ed.), Ockhamism and Philosophy of Time: Semantic and Metaphysical Issues concerning Future Contingents. Springer.
    This paper investigates Ockhamism from a metaphysical point of view. Its main point is that the claim that future contingents are true or false is less demanding than usually expected, as it does not require particularly contentious assumptions about the future. First it will be argued that Ockhamism is consistent with a wide range of metaphysical views. Then it will be shown that each of these views leaves room for the claim that the future is open, at least on some (...)
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  20. Logical Form, Conditionals, Pseudo-Conditionals.Andrea Iacona - forthcoming - Logic and Logical Philosophy:1-18.
    This paper raises some questions about the formalization of sentences containing ‘if’ or similar expressions. In particular, it focuses on three kinds of sentences that resemble conditionals in some respects but exhibit distinctive logical features that deserve separate consideration: whether-or-not sentences, biscuit conditionals, and concessive conditionals. As will be suggested, the examples discussed show in different ways that an adequate formalization of a sentence must take into account the content expressed by the sentence. This upshot is arguably what one should (...)
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  21. Around the Tree: Semantic and Metaphysical Issues Concerning Branching and the Open Future.Fabrice Correia & Andrea Iacona (eds.) - 2013 - Dordrecht, Netherland: Springer.
    Over the past few years, the tree model of time has been widely employed to deal with issues concerning the semantics of tensed discourse. The thought that has motivated its adoption is that the most plausible way to make sense of indeterminism is to conceive of future possibilities as branches that depart from a common trunk, constituted by the past and the present. However, the thought still needs to be further articulated and defended, and several important questions remain open, such (...)
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  22.  87
    Naïve Truth and the Evidential Conditional.Andrea Iacona & Lorenzo Rossi - 2024 - Journal of Philosophical Logic 53 (2):559-584.
    This paper develops the idea that valid arguments are equivalent to true conditionals by combining Kripke’s theory of truth with the evidential account of conditionals offered by Crupi and Iacona. As will be shown, in a first-order language that contains a naïve truth predicate and a suitable conditional, one can define a validity predicate in accordance with the thesis that the inference from a conjunction of premises to a conclusion is valid when the corresponding conditional is true. The validity predicate (...)
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  23. On the Puzzle of the Changing Past.Andrea Iacona - 2016 - Philosophia 44 (1):137-142.
    In the intriguing article The puzzle of the changing past, Barlassina and Del Prete argue that, if one grants a platitude about truth and accepts a simple story that they tell, one is forced to conclude that the past has changed. I will suggest that there is a coherent way to resist that conclusion. The platitude about truth is in fact a platitude, but the story is not exactly as they tell it.
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  24. Timeless Truth.Andrea Iacona - 2013 - In Fabrice Correia & Andrea Iacona (eds.), Around the Tree: Semantic and Metaphysical Issues Concerning Branching and the Open Future. Dordrecht, Netherland: Springer.
    A fairly simple theory of the semantics of tense is obtained by combining three claims: (i) for any time t, a present-tense sentence `p' is either true or false at t; (ii) for any time t0 earlier than t, the future-tense sentence `It will be the case that p at t' is true at t0 if `p' is true at t, false otherwise; (iii) for any time t0 later than t, the past-tense sentence `It was the case that p at (...)
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  25.  18
    Propositions.Andrea Iacona - 2002 - Name.
  26. Counterfactuals as Strict Conditionals.Andrea Iacona - 2015 - Disputatio 7 (41):165-191.
    This paper defends the thesis that counterfactuals are strict conditionals. Its purpose is to show that there is a coherent view according to which counterfactuals are strict conditionals whose antecedent is stated elliptically. Section 1 introduces the view. Section 2 outlines a response to the main argument against the thesis that counterfactuals are strict conditionals. Section 3 compares the view with a proposal due to Aqvist, which may be regarded as its direct predecessor. Sections 4 and 5 explain how the (...)
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  27. Indicative Conditionals as Strict Conditionals.Andrea Iacona - 2018 - Argumenta 4 (1):177-192.
    This paper is intended to show that, at least in a considerably wide class of cases, indicative conditionals are adequately formalized as strict conditionals. The first part of the paper outlines three arguments that support the strict conditional view, that is, three reasons for thinking that an indicative conditional is true just in case it is impossible that its antecedent is true and its consequent is false. The second part of the paper develops the strict conditional view and defends it (...)
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  28. Are there propositions?Andrea Iacona - 2003 - Erkenntnis 58 (3):325 - 351.
  29. Truth preservation in any context.Andrea Iacona - 2010 - American Philosophical Quarterly 47 (2):191.
    Many arguments are affected by context sensitivity, because they include sentences that have different truth conditions in different contexts. Therefore, it is natural to think that a general criterion for evaluating arguments must take context sensitivity into account. One way to give substance to that thought is provided by the definition of validity offered by David Kaplan within his theory of indexicals. However, the route indicated by Kaplan is hindered by a problem whose importance is often underestimated. This paper explores (...)
     
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  30. Saying More (or Less) than One Thing.Andrea Iacona - 2010 - In Richard Dietz & Sebastiano Moruzzi (eds.), Cuts and clouds: vagueness, its nature, and its logic. New York: Oxford University Press.
    In a paper called 'Definiteness and Knowability', Tim Williamson addresses the question whether one must accept that vagueness is an epistemic phenomenon if one adopts classical logic and a disquotational principle for truth. Some have suggested that one must not, hence that classical logic and the disquotational principle may be preserved without endorsing epistemicism. Williamson’s paper, however, finds ‘no plausible way of substantiating that possibility’. Its moral is that ‘either classical logic fails, or the disquotational principle does, or vagueness is (...)
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  31. Counterfactual Fallacies.Andrea Iacona - 2011 - Humana Mente 4 (19).
    A widely accepted claim about counterfactuals is that they differ from strict conditionals, that is, there is no adequate representation of them as sentences of the form   . To justify this claim, Stalnaker and Lewis have argued that some fallacious inferences would turn out valid if counterfactuals were so represented. However, their argument has a flaw, as it rests on a questionable assumption about the relation between surface grammar and logical form. Without that assumption, no consequence of the (...)
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  32. Quantification and Logical Form.Andrea Iacona - 2015 - In Alessandro Torza (ed.), Quantifiers, Quantifiers, and Quantifiers. Themes in Logic, Metaphysics, and Language. (Synthese Library vol. 373). Springer. pp. 125-140.
    This paper deals with the logical form of quantified sentences. Its purpose is to elucidate one plausible sense in which quantified sentences can adequately be represented in the language of first-order logic. Section 1 introduces some basic notions drawn from general quantification theory. Section 2 outlines a crucial assumption, namely, that logical form is a matter of truth-conditions. Section 3 shows how the truth-conditions of quantified sentences can be represented in the language of first-order logic consistently with some established undefinability (...)
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  33. Vagueness and Quantification.Andrea Iacona - 2016 - Journal of Philosophical Logic 45 (5):579-602.
    This paper deals with the question of what it is for a quantifier expression to be vague. First it draws a distinction between two senses in which quantifier expressions may be said to be vague, and provides an account of the distinction which rests on independently grounded assumptions. Then it suggests that, if some further assumptions are granted, the difference between the two senses considered can be represented at the formal level. Finally, it outlines some implications of the account provided (...)
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  34.  40
    Connexivity in the Logic of Reasons.Andrea Iacona - 2023 - Studia Logica 112 (1):325-342.
    This paper discusses some key connexive principles construed as principles about reasons, that is, as principles that express logical properties of sentences of the form ‘p is a reason for q’. Its main goal is to show how the theory of reasons outlined by Crupi and Iacona, which is based on their evidential account of conditionals, yields a formal treatment of such sentences that validates a restricted version of the principles discussed, overcoming some limitations that affect most extant accounts of (...)
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  35.  60
    Logical Form and Truth-Conditions.Andrea Iacona - 2013 - Theoria 28 (3):439-457.
    This paper outlines a truth-conditional view of logical form, that is, a view according to which logical form is essentially a matter of truth-conditions. The main motivation for the view is a fact that seems crucial to logic. As _§_1 suggests, fundamental logical relations such as entailment or contradiction can formally be explained only if truth-conditions are formally represented.§2 spells out the view. _§_3 dwells on its anity with a conception of logical form that has been defended in the past. (...)
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  36. Petitio principii: What's wrong?Andrea Iacona & Diego Marconi - 2005 - Facta Philosophica 7 (1):19-34.
    One of the most common strategies in philosophical dispute is that of accusing the opponent of begging the question, that is, of assuming or presupposing what is to be proved. Thus, it happens quite often that the credibility of a philosophical argument is infected by the suspicion of begging the question. In many cases it is an open question whether the suspicion is grounded, and the answer lurks somewhere in the dark of what the proponent of the argument does not (...)
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  37. Future Contingents and Aristotle’s Fantasy.Andrea Iacona - 2007 - Critica 39 (117):45-60.
    This paper deals with the problem of future contingents, and focuses on two classical logical principles, excluded middle and bivalence. One may think that different attitudes are to be adopted towards these two principles in order to solve the problem. According to what seems to be a widely held hypothesis, excluded middle must be accepted while bivalence must be rejected. The paper goes against that line of thought. In the first place, it shows how the rejection of bivalence leads to (...)
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  38. Timeless Truth.Andrea Iacona - 2013 - In Fabrice Correia & Andrea Iacona (eds.), Around the Tree: Semantic and Metaphysical Issues Concerning Branching and the Open Future. Dordrecht, Netherland: Springer.
    A fairly simple theory of the semantics of tense is obtained by combining three claims: (i) for any time t, a present-tense sentence `p' is either true or false at t; (ii) for any time t0 earlier than t, the future-tense sentence `It will be the case that p at t' is true at t0 if `p' is true at t, false otherwise; (iii) for any time t0 later than t, the past-tense sentence `It was the case that p at (...)
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  39. Propositions and logical form.Andrea Iacona - 2020 - Rivista di Filosofia 111:33-53.
    In my book Logical Form I outline some reasons for thinking that, in the sense of «logical form» that matters to logic, logical form is determined by truth conditions. This paper compares three theories of propositions that might be employed to substantiate the underlying notion of truth conditions: the naturalized propositions theory, the truthmaker theory, and the classificatory theory. Its aim is to show that, while the naturalized propositions theory and the truthmaker theory accord equally well with the idea that (...)
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  40. Love, Reasons, and Replaceability.Andrea Iacona & José Antonio Díez - 2021 - Critica 53 (158):3-21.
    Lovers typically entertain two sorts of thoughts about their beloveds. On the one hand, they think that some qualities of their beloveds provide reasons for loving them. Romeo would say that he loves Juliet in virtue of the way she is. On the other hand, they regard their beloveds as irreplaceable. Romeo would never be willing to exchange Juliet with another maiden. Yet it may be asked how these two sorts of thoughts can coherently coexist. If some qualities of Juliet (...)
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  41. Ockhamism and Quantified Modal Logic.Andrea Iacona - 2015 - Logique Et Analyse 58:353-370.
    This paper outlines a formal account of tensed sentences that is consistent with Ockhamism, a view according to which future contingents are either true or false. The account outlined substantively differs from the attempts that have been made so far to provide a formal apparatus for such a view in terms of some expressly modified version of branching time semantics. The system on which it is based is the simplest quantified modal logic.
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  42.  87
    Validity and Interpretation.Andrea Iacona - 2010 - Australasian Journal of Philosophy 88 (2):247-264.
    This paper claims that there is a plausible sense in which validity is a matter of truth preservation relative to interpretations of the sentences that occur in an argument, although it is not the sense one might have in mind. §1 outlines three independent problems: the first is the paradox of the sorites, the second concerns the fallacy of equivocation, and the third arises in connection with the standard treatment of indexicals. §2 elucidates the claim about validity, while §§3-5 show (...)
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  43. Replies.Andrea Iacona - 2020 - Disputatio 12 (58):309-329.
    In this paper I provide five separate responses, one for each of the contributed papers, in order to clarify some crucial aspects of the view defended in my book.
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  44. Modal Predicates.Andrea Iacona - 2004 - Australasian Journal of Logic 2:44-69.
    Despite the wide acceptance of standard modal logic, there has always been a temptation to think that ordinary modal discourse may be correctly analyzed and adequately represented in terms of predicates rather than in terms of operators. The aim of the formal model outlined in this paper is to capture what I take to be the only plausible sense in which ‘possible’ and ‘necessary’ can be treated as predicates. The model is built by enriching the language of standard modal logic (...)
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  45.  63
    True in a sense.Andrea Iacona - 2006 - Grazer Philosophische Studien 72 (1):141-154.
    The aim of this paper is to show that in order to make sense of the ascription of truth and falsity to the things we say it is essential to acknowledge a divergence between two basic intuitions. According to one of them it is plausible to talk of what is said as what the speaker has in mind. According to the other it is plausible to talk of what is said as the bearer of truth or falsity. The paper presents (...)
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  46. TxW Epistemic Modality.Andrea Iacona - 2012 - Logic and Philosophy of Science 10:3-14.
    So far, T×W frames have been employed to provide a semantics for a language of tense logic that includes a modal operator that expresses historical necessity. The operator is defined in terms of quantification over possible courses of events that satisfy a certain constraint, namely, that of being alike up to a given point. However, a modal operator can as well be defined without placing that constraint. This paper outlines a T×W logic where an operator of the latter kind is (...)
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  47.  12
    Future Contingents.Andrea Iacona - 2011 - In James Fieser & Bradley Dowden (eds.), Internet Encyclopedia of Philosophy. Routledge.
  48.  29
    A short philosophical guide to the fallacies of love.José A. Díez & Andrea Iacona - 2020 - New York: Bloomsbury Academic. Edited by Andrea Iacona.
    In this book, two philosophers use their training in arguments and reasoning to uncover the role of ungrounded beliefs when we fall in love. They illustrate the fallacies of love by drawing on personal experiences, literary characters and two imaginary individuals, providing examples of ungrounded beliefs in Aesop's Fables, Cinderella and Don Giovanni amongst others to illustrate love as an inexhaustible source of misperceptions, misunderstandings and misconceptions.
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  49. Further Issues Concerning Quantification.Andrea Iacona - 2018 - In Logical Form: Between Logic and Natural Language. Cham, Switzerland: Springer Verlag.
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  50. Formal Languages and Natural Languages.Andrea Iacona - 2018 - In Logical Form: Between Logic and Natural Language. Cham, Switzerland: Springer Verlag.
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