Convexity theorems for varieties invariant under a Borel subgroup
classification
🧮 math.SG
math.AG
keywords
actionscomplexsubgroupactionatiyahborelbrionclosure
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Atiyah proved that the moment map image of the closure of an orbit of a complex torus action is convex. Brion generalized this result to actions of a complex reductive group. We extend their results to actions of a maximal solvable subgroup.
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