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arxiv: 1109.6873 · v2 · pith:4MXO7TYWnew · submitted 2011-09-30 · 🧮 math.SG · math.AG

Classification of Hamiltonian torus actions with two dimensional quotients

classification 🧮 math.SG math.AG
keywords actionsclassificationdimensionalhamiltonianspacestoruscompactcompletes
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We construct all possible Hamiltonian torus actions for which all the non-empty reduced spaces are two dimensional (and not single points) and the manifold is connected and compact, or, more generally, the moment map is proper as a map to a convex set. This construction completes the classification of tall complexity one spaces.

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