[FOM] strong arithmetical theorems?
panu.raatikainen at helsinki.fi
Sun Oct 17 07:11:27 EDT 2010
Are there natural theorems of ordinary *arithmetic* which are not
provable in weak theories such as S^1_2, EFA and such (that is,
theories that can be interpreted in the Robinson Arithmetic Q) but
require at least RCA_0, or something ?
Ph.D., Docent in Theoretical Philosophy
Department of Philosophy, History, Culture and Art Studies
P.O. Box 24 (Unioninkatu 38 A)
FIN-00014 University of Helsinki
E-mail: panu.raatikainen at helsinki.fi
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