Geodesic
Sylvester versus Gundelfinger
Symmetry, integrability and geometry: methods and applications, Tome 8 (2012) Cet article a éte moissonné depuis la source Math-Net.Ru

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Let $V_n$ be the $\mathrm{SL}_2$-module of binary forms of degree $n$ and let $V=V_1\oplus V_3\oplus V_4$. We show that the minimum number of generators of the algebra $R = \mathbb C[V]^{\mathrm{SL}_2}$ of polynomial functions on $V$ invariant under the action of $\mathrm{SL}_2$ equals 63. This settles a 143-year old question.
Keywords: invariants; covariants; binary forms. 
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     url = {http://geodesic.mathdoc.fr/item/SIGMA_2012_8_a74/}
}
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Andries E. Brouwer; Mihaela Popoviciu. Sylvester versus Gundelfinger. Symmetry, integrability and geometry: methods and applications, Tome 8 (2012). http://geodesic.mathdoc.fr/item/SIGMA_2012_8_a74/

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