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DTSTAMP:20251024T111852Z
DESCRIPTION:Title: Examples of Compact Einstein four-manifolds with negativ
 e curvature.\n\nAbstract: We construct new examples of closed\, negatively
  curved Einstein four-manifolds. More precisely\, we construct  Einstein m
 etrics of negative sectional curvature on ramified covers of compact hyper
 bolic four-manifolds with symmetries\, initially considered by Gromov and 
 Thurston. These metrics are obtained through a deformation procedure.  Our
  candidate approximate Einstein metric is an interpolation between a black
 -hole Riemannian Einstein metric near the branch locus and the pulled-back
  hyperbolic metric. We then deform it into a genuine solution of Einstein’
 s equations\, and the deformation relies on an involved bootstrap procedur
 e. Our construction yields the first example of compact Einstein manifolds
  with negative sectional curvature which are not locally homogeneous. This
  is a joint  work with J. Fine (ULB\, Brussels).\n\n \n
DTSTART:20180131T183000Z
DTEND:20180131T193000Z
LOCATION:Room 920\, Burnside Hall\, CA\, QC\, Montreal\, H3A 0B9\, 805 rue 
 Sherbrooke Ouest
SUMMARY:Bruno Premoselli (ULB\, Brussels)
URL:/mathstat/channels/event/bruno-premoselli-ulb-brus
 sels-284263
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