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No cardinal correct inner model elementarily embeds into the universe

Published 1 Nov 2024 in math.LO | (2411.01046v1)

Abstract: An elementary embedding $j:M\rightarrow N$ between two inner models of ZFC is cardinal preserving if $M$ and $N$ correctly compute the class of cardinals. We look at the case $N=V$ and show that there is no nontrivial cardinal preserving elementary embedding from $M$ into $V$, answering a question of Caicedo.

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