Example of a non-log-concave Duistermaat-Heckman measure
classification
dg-ga
math.DG
keywords
duistermaat-heckmanactioncirclecompactconstructexamplefunctionhamiltonian
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We construct a compact symplectic manifold with a Hamiltonian circle action for which the Duistermaat-Heckman function is not log-concave.
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