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Mark Gould

Publications and source records attributed to Mark Gould.

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Unitary branching rules for the general linear Lie superalgebra

In terms of highest weights, we establish branching rules for finite dimensional unitary simple modules of the general linear Lie superalgebra $\mathfrak{gl}_{m|n}$. Our proof uses the Howe duality for $\mathfrak{gl}_{m|n}$, as well as branching rules for Kac modules. Moreover, we derive the branching rules of type 2 unitary simple $\mathfrak{gl}_{m|n}$-modules, which are dual to the aforementioned unitary modules.

math.RT

The Prescribed Ricci Curvature Problem on Homogeneous Spaces with Intermediate Subgroups

Consider a compact Lie group $G$ and a closed subgroup $H 0$ such that the Ricci curvature of $g$ equals $cT$ for a given $T\in\mathcal M$. This condition is also necessary if the isotropy representation of $M$ splits into two inequivalent irreducible summands. Immediate and potential applications include new existence results for Ricci iterations.

math.DG