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2 votes

$SL(n) \times SL(n)$-invariants of $m$-tuples of matrices

The answer in the generality of quiver representations is given by H. Derksen, J. Weyman, Semi-invariants of quivers and saturation for Littlewood-Richardson coecients, J. Amer. Math. Soc. 13 (2000 …
Jiarui Fei's user avatar
9 votes
1 answer
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Hyper-symmetric polynomials (reference request)

Let $M_n$ be the linear space of $n\times n$ matrices. The product of symmetric groups $S_n\times S_n$ acts naturally on $M_n$, and thus induces an action on the coordinate algebra $k[M_n]$. Is there …
Jiarui Fei's user avatar