Uniqueness and Nonuniqueness for Ricci Flow on Surfaces: Reverse Cusp Singularities

作者:Topping Peter M*
来源:International Mathematics Research Notices, 2012, (10): 2356-2376.
DOI:10.1093/imrn/rnr082

摘要

We extend the notion of what it means for a complete Ricci flow to have a given initial metric, and consider the resulting well-posedness issues that arise in the two-dimensional case. On one hand, we construct examples of nonuniqueness by showing that surfaces with cusps can evolve either by keeping the cusps or by contracting them. On the other hand, by adding a noncollapsedness assumption for the initial metric, we establish a uniqueness result.

  • 出版日期2012