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Ricci flow on locally homogeneous closed 4-manifolds

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arxiv math/0502170 v1 pith:2J2HMVTW submitted 2005-02-08 math.DG

Ricci flow on locally homogeneous closed 4-manifolds

classification math.DG
keywords flowmanifoldsriccifamilieshomogeneoustimeanalyzebehavior
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We discuss the Ricci flow on homogeneous 4-manifolds. After classifying these manifolds, we note that there are families of initial metrics such that we can diagonalize them and the Ricci flow preserves the diagonalization. We analyze the long time behavior of these families. We find that if a solution exists for all time, then the flow exhibits a type III singularity in the sense of Hamilton.

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