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SUMMARY:Anusha Krishnan (University of Münster)
DTSTART:20220601T090000Z
DTEND:20220601T100000Z
DTSTAMP:20260423T021233Z
UID:VSGS/55
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/VSGS/55/">Po
 sitive sectional curvature and Ricci flow</a>\nby Anusha Krishnan (Univers
 ity of Münster) as part of Virtual seminar on geometry with symmetries\n\
 n\nAbstract\nThe preservation of positive curvature conditions under the R
 icci flow has been an important ingredient in applications of the flow to 
 solving problems in geometry and topology.  Works by Hamilton and others e
 stablished that certain positive curvature conditions are preserved under 
 the flow\, culminating in Wilking's unified\, Lie algebraic approach to pr
 oving invariance of positive curvature conditions.  Yet\, some questions r
 emain.  In this talk\, we describe $\\sec > 0$ metrics on $S^4$ and $\\mat
 hbb{C}P^2$\, which evolve under the Ricci flow to metrics with sectional c
 urvature of mixed sign.  The setting is that of metrics invariant under a 
 Lie group action of cohomogeneity one.  This is joint work with Renato Bet
 tiol.\n
LOCATION:https://researchseminars.org/talk/VSGS/55/
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