17 found
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  1.  77
    Coherence as a Heuristic.Staffan Angere - 2008 - Mind 117 (465):1-26.
    The impossibility results of Bovens and Hartmann (2003) and Olsson (2005) call into question the strength of the connection between coherence and truth. As part of the inquiry into this alleged link, I define a notion of degree of truth-conduciveness, relevant for measuring the usefulness of coherence measures as rules-of-thumb for assigning probabilities in situations of partial knowledge. I use the concept to compare the viability of some of the measures of coherence that have been suggested so far under different (...)
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  2. The Defeasible Nature of Coherentist Justification.Staffan Angere - 2007 - Synthese 157 (3):321 - 335.
    The impossibility results of Bovens and Hartmann (2003, Bayesian epistemology. Oxford: Clarendon Press) and Olsson (2005, Against coherence: Truth, probability and justification. Oxford: Oxford University Press.) show that the link between coherence and probability is not as strong as some have supposed. This paper is an attempt to bring out a way in which coherence reasoning nevertheless can be justified, based on the idea that, even if it does not provide an infallible guide to probability, it can give us an (...)
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  3.  20
    Linking as Voting : How the Condorcet Jury Theorem in Political Science is Relevant to Webometrics.George Masterton, Erik J. Olsson & Staffan Angere - unknown
  4. The Logical Structure of Truthmaking.Staffan Angere - 2015 - Journal of Philosophical Logic 44 (4):351-374.
    This paper is an investigation in the use of truthmaker theory for exploring the relation of logic to world, and as a tool for metaphysics. A variant of truthmaker theory, which we call the simple theory, is defined and defended against objections. It is characterized formally, and its central features are derived. As part of this project, we give a formal metaphysics based on nondeterministic necessitation relations among possible entities. In what is called the fundamental theorem of truthmaking, it is (...)
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  5.  1
    Knowledge in a Social Network.Staffan Angere - unknown
    The purpose of this paper is to present a formal model of social net- works suitable for studying questions in social epistemology. We show how to use this model, in conjunction with a computer program for simulating groups of inquirers, to draw conclusions about the epistemological prop- erties of different social practices. This furnishes us with the beginnings of a systematic research program in social epistemology, from which to approach problems pertaining to epistemic value, optimal organization, and the dynamics of (...)
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  6.  94
    The Square Circle.Staffan Angere - 2014 - Metaphilosophy 48 (1-2):79-95.
    This article shows that there are square circles in the sense that there are mathematical objects that are at the same time both perfectly circular and perfectly square. The philosophical significance of this is discussed, especially in view of philosophy's widespread use of “square circle” as a typical example of an impossibility. In particular, the focus is on what the existence of square circles means for the possibility of conceptual analysis, and more generally what we can learn about the nature (...)
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  7.  3
    The Logic of Isomorphism and its Uses.Staffan Angere - unknown
    We present a class of first-order modal logics, called transformational logics, which are designed for working with sentences that hold up to a certain type of transformation. An inference system is given, and com- pleteness for the basic transformational logic HOS is proved. In order to capture ‘up to isomorphism’, we express a very weak version of higher category theory in terms of first-order models, which makes tranforma- tional logics applicable to category theory. A category-theoretical concept of isomorphism is used (...)
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  8.  26
    Theory and Reality : Metaphysics as Second Science.Staffan Angere - unknown
    Theory and Reality is about the connection between true theories and the world. A mathematical framefork for such connections is given, and it is shown how that framework can be used to infer facts about the structure of reality from facts about the structure of true theories, The book starts with an overview of various approaches to metaphysics. Beginning with Quine's programmatic "On what there is", the first chapter then discusses the perils involved in going from language to metaphysics. It (...)
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  9.  79
    The Philosophy of Information – By Luciano Floridi.Staffan Angere - 2012 - Theoria 78 (1):80-83.
  10.  24
    Identity and Intensionality in Univalent Foundations and Philosophy.Staffan Angere - 2017 - Synthese:1-41.
    The Univalent Foundations project constitutes what is arguably the most serious challenge to set-theoretic foundations of mathematics since intuitionism. Like intuitionism, it differs both in its philosophical motivations and its mathematical-logical apparatus. In this paper we will focus on one such difference: Univalent Foundations’ reliance on an intensional rather than extensional logic, through its use of intensional Martin-Löf type theory. To this, UF adds what may be regarded as certain extensionality principles, although it is not immediately clear how these principles (...)
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  11.  32
    Network Density and Group Competence in Scientific Communication.Staffan Angere & Erik J. Olsson - unknown
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  12.  1
    A Note on Isomorphism and Identity.Staffan Angere - unknown
    This note argues that, insofar as contemporary mathematics is concerned, there is overwhelming evidence that if mathematical objects are structures, then isomorphism should not be taken as their identity condition. This goes against a common version of structuralism in the philosophical literature. Four areas are presented in which identifying isomorphic structures or objects leads to contradiction or inadequacy. This is followed by a philosophical discussion on possible ways to approach the distinction, and a section on the possibility of proceeding intensionally, (...)
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  13.  1
    Publish Late, Publish Rarely! : Network Density and Group Performance in Scientific Communication.Staffan Angere & Erik J. Olsson - 2017 - In Thomas Boyer-Kassem, Conor Mayo-Wilson & Michael Weisberg (eds.), Scientific Collaboration and Collective Knowledge: Now Essays. Oxford University Press.
    Research programs regularly compete to achieve the same goal, such as the discovery of the structure of DNA or the construction of a TEA laser. The more the competing programs share information, the faster the goal is likely to be reached, to society’s benefit. But the “priority rule”-the scientific norm according to which the first program to reach the goal in question must receive all the credit for the achievement-provides a powerful disincentive for programs to share information. How, then, is (...)
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  14.  1
    What is an Embedding? : A Problem for Category-Theoretic Structuralism.Staffan Angere - unknown
    This paper concerns the proper definition of embeddings in purely category-theoretical terms. It is argued that plain category theory cannot capture what, in the general case, constitutes an embedding of one structure in another. We discuss three available solutions to this problem: variants of monics, concrete categories, and allegories. The first and last of these are found to be unable to solve the problem, and the second to be philosophically unsatisfactory. Instead, we introduce a theory of forms and relators, which, (...)
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  15.  1
    What Sets Could Not Be.Staffan Angere - unknown
    Sets are often taken to be collections, or at least akin to them. In contrast, this paper argues that. although we cannot be sure what sets are, what we can be entirely sure of is that they are not collections of any kind. The central argument will be that being an element of a set and being a member in a collection are governed by quite different axioms. For this purpose, a brief logical investigation into how set theory and collection (...)
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  16.  24
    Inquiry and Deliberation in Judicial Systems : The Problem of Jury Size.Staffan Angere, Erik J. Olsson & Emmanuel Genot - unknown
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  17.  14
    The Philosophy of Information.Staffan Angere - unknown