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arXiv · 1608.08438

Revisiting virtual difference ideals

Zoé Chatzidakis·Ehud Hrushovski
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Abstract

The main idea of [4] was that structures built from periodic prime ideals have better properties from the usual ones built from invariant ideals; but unable to work with periodic ideals alone, we had to generalise further to a somewhat ephemeral setting called virtual ideals. This text has two purposes. It corrects an error in [4] discovered by Tom Scanlon's UCB seminar, recovering all results for all virtual ideals. In addition, based on results in [3], we describe a wide family of difference equations where virtual ideals reduce to periodic ideals.

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Zoé Chatzidakis, Ehud Hrushovski. 2016-08-30. Revisiting virtual difference ideals. https://doi.org/10.2140/mt.2024.3.285

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