Abstract.
In this paper we introduce theories of universes in analysis. We discuss a non-uniform, a uniform and a minimal variant. An analysis of the proof-theoretic bounds of these systems is given, using only methods of predicative proof-theory. It turns out that all introduced theories are of proof-theoretic strength between Γ0 and ϕ1ɛ00.
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Received: 24 November 2000 / Revised Version: 14 June 2002 Published online: 10 October 2002
This paper is a part of the author's Ph.D. dissertation
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Rüede, C. Universes in metapredicative analysis. Arch. Math. Logic 42, 129–151 (2003). https://doi.org/10.1007/s00153-002-0149-8
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DOI: https://doi.org/10.1007/s00153-002-0149-8