Small angle limits of Hamilton's footballs
Differential Geometry
2024-11-20 v1
Abstract
Compact Ricci solitons on surfaces have at most two cone points, and are known as Hamilton's footballs. In this note we completely describe the degenerations of these footballs as one or both of the cone angles approaches zero. In particular, we show that Hamilton's famous non-compact cigar soliton is the Gromov--Hausdorff limit of Hamilton's compact conical teardrop solitons.
Keywords
Cite
@article{arxiv.1905.00865,
title = {Small angle limits of Hamilton's footballs},
author = {Yanir A. Rubinstein and Kewei Zhang},
journal= {arXiv preprint arXiv:1905.00865},
year = {2024}
}