Symmetric Semi-invariants for some Inonu-Wigner contractions

Florence Fauquant-Millet

Let $\mathfrak{p}$ be a proper parabolic subalgebra of a simple Lie algebra $\mathfrak{g}$. Writing $\mathfrak{p}=\mathfrak{r}\oplus \mathfrak{m}$, with $\mathfrak{r}$ being the Levi fac…