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Twisted invariant theory for reflection groups

Cédric Bonnafé·Gus Lehrer·Jean Michel
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Abstract

Let $G$ be a reflection group acting on a vector space $V$ and let $γ$ be an automorphism of $V$ normalising $G$. We study how $γ$ acts on invariants and covariants (for various representations) of $G$, and properties of its eigenspaces.

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Cédric Bonnafé, Gus Lehrer, Jean Michel. 2006-02-27. Twisted invariant theory for reflection groups. https://arxiv.org/abs/math/0505087

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