[FOM] Reinhardt cardinals
meskew at math.uci.edu
meskew at math.uci.edu
Fri Dec 16 13:54:14 EST 2011
> Can you give a reference for Suzuki's theorem?
>
> Thanks.
>
> -- Bob Solovay
Here is the citation:
"No Elementary Embedding from V into V is Definable from Parameters,"
Akira Suzuki, The Journal of Symbolic Logic , Vol. 64, No. 4 (Dec., 1999),
pp. 1591-1594.
It is also discussed in this recent paper by Hamkins et al:
http://arxiv.org/abs/1106.1951
The idea is simple. For \phi(x,y,z), let \kappa be least such that for
some z, \phi(x,y,z) defines a Sigma_1 elementary embedding into V with
critical point \kappa. Pick some witness and apply its embedding, noting
that the above statement is preserved.
Best,
Monroe
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