Full reflection of stationary sets below aleph_omega
classification
🧮 math.LO
keywords
omegacofinalityeveryordinalsstationaryalephbelowbest
read the original abstract
It is consistent that for every n >= 2, every stationary subset of omega_n consisting of ordinals of cofinality omega_k where k = 0 or k <= n-3 reflects fully in the set of ordinals of cofinality omega_{n-1}. We also show that this result is best possible.
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