"Ransey Equivalence"
Neil Dewar (Munich Center for Mathematical Philosophy, LMU Munich)

part of: 2017 Salzburg-Irvine-Munich Workshop in Logic and Philosophy of Science: In the Sciences
March 3, 2017, 9:00am - 9:30am
Department of Logic & Philosophy of Science, University of California, Irvine, CA/USA

HIB 55, Department of Philosophy, Enter Conference from the Philosophy Department Entrance
55 Humanities Instructional Building
University of California, Irvine 92697-4555
United States

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  • Department of Philosophy
  • School of Social Sciences

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In this talk, Dewar will critique the claim that a theory’s Ramsey sentence (or something like it) is a good candidate for encoding that theory’s structural content. To do so, Dewar uses the following observation: if a Ramsey-style sentence did encode a theory’s structural content, then two theories would be structurally equivalent just in case they have logically equivalent Ramsey sentences. Dewar then argues that this criterion for structural equivalence is implausible, even under various modifications of the Ramsey-sentence proposal: the use of frame or Henkin semantics, the use of full modal semantics, or the use of modal Henkin semantics.

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