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Difference fields and descent in algebraic dynamics, II

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 نشر من قبل Ehud Hrushovski
 تاريخ النشر 2008
  مجال البحث
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This second part of the paper strengthens the descent theory described in the first part to rational maps, arbitrary base fields, and dynamics given by correspondences. We obtain in particular a decomposition of any difference field extension into a tower of finite, field-internal and one-based difference field extensions. This is needed in order to obtain the dynamical Northcott Theorem 1.11 of Part I in sharp form.

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