Uniqueness of the Ricci Flow on Complete Noncompact Manifolds

Details Uniqueness of the Ricci Flow on Complete Noncompact Manifolds Uniqueness of the Ricci Flow on Complete Noncompact Manifolds

2005-05-21

arxiv.org/abs/math/0505447v3

Mathematics

Differential Geometry

33 pages (Previous version has some typing errors, the present one is correct.)

Scientific paper

The Ricci flow is an evolution system on metrics. For a given metric as initial data, its local existence and uniqueness on compact manifolds was first established by Hamilton \cite{Ha1}. Later on, De Turck \cite{De} gave a simplified proof. In the later of 80's, Shi \cite{Sh1} generalized the local existence result to complete noncompact manifolds. However, the uniqueness of the solutions to the Ricci flow on complete noncompact manifolds is still an open question. Recently it was found that the uniqueness of the Ricci flow on complete noncompact manifolds is important in the theory of the Ricci flow with surgery. In this paper, we give an affirmative answer for the uniqueness question. More precisely, we prove that the solution of the Ricci flow with bounded curvature on a complete noncompact manifold is unique.

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