Automorphism towers and automorphism groups of fields without choice

by Kaplan and Shelah. [KpSh:913]
Contemporary Math, 2012
The main result (already achieved in [FriedKollar]), is that any group can be represented as an automorphism group of a field. We introduce a new proof, using a simple construction. We conclude tau_{kappa}^{nlg} <= tau_{kappa} without choice.

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