Riemannian groupoids and solitons for three-dimensional homogeneous Ricci and cross curvature flows

Details Riemannian groupoids and solitons for three-dimensional homogeneous Ricci and cross curvature flows Riemannian groupoids and solitons for three-dimensional homogeneous Ricci and cross curvature flows

2007-10-05

arxiv.org/abs/0710.1276v2

Mathematics

Differential Geometry

Scientific paper

In this paper we investigate the behavior of three-dimensional homogeneous solutions of the cross curvature flow using Riemannian groupoids. The Riemannian groupoid technique, introduced by John Lott, allows us to investigate the long term behavior of collapsing solutions of the flow, producing soliton solutions in the limit. We also review Lott's results on the long term behavior of three-dimensional homogeneous solutions of Ricci flow, demonstrating the coordinates we choose and reviewing the groupoid technique. We find cross curvature soliton metrics on Sol and Nil, and show that the cross curvature flow of SL(2,R) limits to Sol.

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