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arXiv · 1910.13749

Reductivity properties over an affine base

Wilberd van der Kallen
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Abstract

When the base ring is not a field, power reductivity of a group scheme is a basic notion, intimately tied with finite generation of subrings of invariants. Geometric reductivity is weaker and less pertinent in this context. We give a survey of these properties and their connections.

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BibTeXRIS

Wilberd van der Kallen. 2020-09-30. Reductivity properties over an affine base. https://doi.org/10.1016/j.indag.2020.09.009

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