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arXiv · 2106.00070

$U$-projectors and fields of $U$-invariants

K. A. Vyatkina·A. N. Panov
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Abstract

We present the general construction of the $U$-projector (the homomorphism of the algebra into its field of $U$-invariants identical on the subalgebra of $U$-invariants). It is shown how to apply $U$-projector to find the systems of free generators of the fields of $U$-invariants for representations of reductive groups.

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BibTeXRIS

K. A. Vyatkina, A. N. Panov. 2021-05-31. $U$-projectors and fields of $U$-invariants. https://arxiv.org/abs/2106.00070

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