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DTSTART:20230312T070000
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DTSTART;TZID=America/Toronto:20230921T143000
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URL:https://uwaterloo.ca/pure-mathematics-geometry-topology/events/nearly-k
 ahler-metrics-and-torus-symmetry
SUMMARY:Nearly Kahler metrics and torus symmetry
CLASS:PUBLIC
DESCRIPTION:GIOVANNI RUSSO\, FLORIDA INTERNATIONAL UNIVERSITY\n\nNearly Kah
 ler manifolds are Riemannian spaces equipped with an almost\nHermitian str
 ucture of special type. In dimension six\, nearly Kahler\nmetrics are Eins
 tein with positive scalar curvature\, and have\ninteresting connections wi
 th G2 and spin geometry. At present there\nare very few compact examples\,
  which are either homogeneous or of\ncohomogeneity one.\n\nIn this talk we
  explain a theory of nearly Kahler six-manifolds\nadmitting a two-torus sy
 mmetry. The torus-action yields a multi-moment\nmap\, which we use as a Mo
 rse function to understand the structure of\nthe whole manifold. In partic
 ular\, we show how the local geometry of a\nnearly Kahler six-manifold can
  be recovered from three-dimensional\ndata\, and discuss connections with 
 GKM theory.\n\nQNC 2501
DTSTAMP:20260314T120554Z
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