Mathematics – Logic
Scientific paper
1998-08-03
Mathematics
Logic
Plain tex, 13 pages. Submitted to the Kobe Journal of Mathematics. See also http://www.library.csi.cuny.edu/users/hamkins/pape
Scientific paper
From a suitable large cardinal hypothesis, we provide a model with a supercompact cardinal in which universal indestructibility holds: every supercompact and partially supercompact cardinal kappa is fully indestructible by kappa-directed closed forcing. Such a state of affairs is impossible with two supercompact cardinals or even with a cardinal which is supercompact beyond a measurable cardinal.
Apter Arthur W.
Hamkins Joel David
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