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math.LO2021
Compactness and Guessing Principles in the Radin Extensions
Omer Ben-Neria, Jing Zhang
We investigate the interaction between compactness principles and guessing principles in the Radin forcing extensions. In particular, we show that in any Radin forcing extension wi…
math.LO2021
Strongest transformations
Assaf Rinot, Jing Zhang
We continue our study of maps transforming high-dimensional complicated objects into squares of stationary sets. Previously, we proved that many such transformations exist in ZFC,…