Accepted Paper
Inserted: 5 jun 2009
Last Updated: 4 sep 2009
Journal: Math. Ann.
Year: 2009
Abstract:
In this paper we give a characterizations of flow maps of $H^{3/2}$-vector fields on the circle in terms of fractional Sobolev norms. Our result has applications in the study of the geometry of Bers's universal Teichmüller space.
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