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Negative types

Mind 61 (243):366-368 (1952)

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  1. Hierarchies Ontological and Ideological.Øystein Linnebo & Agustín Rayo - 2012 - Mind 121 (482):269 - 308.
    Gödel claimed that Zermelo-Fraenkel set theory is 'what becomes of the theory of types if certain superfluous restrictions are removed'. The aim of this paper is to develop a clearer understanding of Gödel's remark, and of the surrounding philosophical terrain. In connection with this, we discuss some technical issues concerning infinitary type theories and the programme of developing the semantics for higher-order languages in other higher-order languages.
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  • Foundations of mathematics in polymorphic type theory.M. Randall Holmes - 2001 - Topoi 20 (1):29-52.
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  • (1 other version)A Consistent Higher-Order Theory Without a Model.Thomas Forster - 1989 - Zeitschrift fur mathematische Logik und Grundlagen der Mathematik 35 (5):385-386.
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  • Circularity and Paradox.Stephen Yablo - 2008 - In Thomas Bolander (ed.), Self-reference. Center for the Study of Language and Inf. pp. 139--157.
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  • (1 other version)A Consistent Higher‐Order Theory Without a (Higher‐Order) Model.Thomas Forster - 1989 - Mathematical Logic Quarterly 35 (5):385-386.
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  • Aussagenlogische grundeigenschaften formaler systeme.von Kurt Sceütte - 1958 - Dialectica 12 (3‐4):422-442.
    ZusammenfassungIn einem typenfreien formalen System, das widerspruchsfrei ist und alle Begriffe der klassischen Mathematik darzustellen vermag, können nicht alle Gesetze der klassischen Aussagenlogik gelten. Es entsteht daher das Problem, die aussagenlogischen Eigenschaften formaler Systeme allgemein zu untersuchen. Unter gewissen Voraussetzungen in aussagenlogischer Hinsicht wird die « aussagenlogische Vollständigkeit » und die « aussagenlogische Widerspruchsfreiheit » eines formalen Systems durch das Tertium non datur beziehungsweise durch die Schlussregel des Ex falso quodlibet charakterisiert. Es werden Entscheidungsverfahren für diejenigen syntaktischen Schlussregeln entwickelt, die (...)
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  • The equivalence of NF-Style set theories with "tangled" theories; the construction of ω-models of predicative NF (and more).M. Randall Holmes - 1995 - Journal of Symbolic Logic 60 (1):178-190.
    An ω-model (a model in which all natural numbers are standard) of the predicative fragment of Quine's set theory "New Foundations" (NF) is constructed. Marcel Crabbe has shown that a theory NFI extending predicative NF is consistent, and the model constructed is actually a model of NFI as well. The construction follows the construction of ω-models of NFU (NF with urelements) by R. B. Jensen, and, like the construction of Jensen for NFU, it can be used to construct α-models for (...)
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  • Automorphisms of models of set theory and extensions of NFU.Zachiri McKenzie - 2015 - Annals of Pure and Applied Logic 166 (5):601-638.
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