arXiv:1902.00895 [math.LO]AbstractReferencesReviewsResources
A note on derivability conditions
Published 2019-02-03Version 1
We investigate relationships between versions of derivability conditions for provability predicates. We show several implications and non-implications between the conditions, and we discuss unprovability of consistency statements induced by derivability conditions. Among other things, we improve Buchholz's schematic proof of provable $\Sigma_1$-completeness.
Comments: 31 pages
Categories: math.LO
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