Fields of U-invariants of matrix tuples
نویسندگان
چکیده
The general linear group $\mathrm{GL}(n)$ acts on the direct sum of $m$ copies $\mathrm{Mat}(n)$ by adjoint action. action induces unitriangular subgroup $U$. We present system free generators field $U$-invariants.
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متن کاملU-invariants for Forms of Higher Degree
Both a general and a diagonal u-invariant for forms of higher degree are defined, generalizing the u-invariant of quadratic forms. Both old and new results on these invariants are collected.
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ژورنال
عنوان ژورنال: Electronic Journal of Linear Algebra
سال: 2023
ISSN: ['1081-3810', '1537-9582']
DOI: https://doi.org/10.13001/ela.2023.7355