Invertible definitions

Notre Dame Journal of Formal Logic 28 (2):244-258 (1987)
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Abstract

A concept of informational equivalence between relations is explicated to generalize some suggestions by Geach. It is shown that two relations are informationally equivalent if and only if each can be defined in terms of the other without the use of quantifiers. It is shown that there is a general method for listing the ./-place relations informationally equivalent to an arbitrary given /-place relation if and only if i

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Timothy Williamson
University of Oxford

Citations of this work

Relations.Fraser MacBride - 2016 - Stanford Encyclopedia of Philosophy.
The Modal Logic of Agreement and Noncontingency.Lloyd Humberstone - 2002 - Notre Dame Journal of Formal Logic 43 (2):95-127.
Béziau's Translation Paradox.Lloyd Humberstone - 2005 - Theoria 71 (2):138-181.
Comparatives and the Reducibility of Relations.I. L. Humberstone - 2017 - Pacific Philosophical Quarterly 76 (2):117-141.

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References found in this work

Universals and scientific realism.David Malet Armstrong - 1978 - New York: Cambridge University Press.
Converse relations.Timothy Williamson - 1985 - Philosophical Review 94 (2):249-262.
Russell's Logical atomism.Bertrand Russell - 1972 - London,: Fontana. Edited by David Pears & Bertrand Russell.

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