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arXiv · 0902.0844

An invariant for difference field extensions

Zoé Chatzidakis·Ehud Hrushovski
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Abstract

In this paper we introduce a new invariant (the distant degree) for difference field extensions of finite transcendence degree, and we explore some of its properties. We also discuss a generalisation of this invariant and of the limit degree to groups with an automorphism.

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Zoé Chatzidakis, Ehud Hrushovski. 2009-02-05. An invariant for difference field extensions. https://arxiv.org/abs/0902.0844

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