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Published online by Cambridge University Press: 03 March 2025
We show that if a field A is not pseudo-finite, then there is no prime model of the theory of pseudo-finite fields over A. Assuming GCH, we extend this result to $\kappa $-prime models, for
$\kappa $ an uncountable cardinal or
$\aleph _\varepsilon $.
Editor’s note: Sadly, Zoé Chatzidakis passed away on January 22 this year. The last revision of the present paper was prepared by her on November 2024 and only a few typos have been corrected. The files were recovered thanks to Tamara Servi. We thank her and also the anonymous referee for their help in making possible the publication.