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Conference on Complex Analysis and Mathematical Physics, dedicated to the 70th birthday of A. G. Sergeev
March 18, 2019 12:00–12:40, Moscow, Steklov Mathematical Institute, Gubkina St., 8
 


Kählerian reduction

Peter Heinzner

Ruhr University Bochum
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MP4 525.4 Mb

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Abstract: We will consider a Hamiltonian action of a non compact group $G$ consisting of holomorphic Kähler isometries on a Kählerian manifold $X$. If the zero fiber $\mathcal M$ of the corresponding momentum map is non empty, then the quotient $\mathcal M/G$ is know to be a Kähler space. We will show that locally near $\mathcal M$ the Kählerian form $\omega$ on $X$ has a $G$-invariant Kähler potential, i.e. it is given in a $G$-invariant neighborhood by an invariant strictly plurisubharmonic function $\rho$ which determines the momentum map.

Language: English

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