来源:Bulletin of the London Mathematical Society, 2013, 45: 153-158.
DOI:10.1112/blms/bds074
摘要
It is a theorem of Bando that if g(t) is a solution to the Ricci flow on a compact manifold M, then (M, g(t)) is real-analytic for each t > 0. In this note, we extend his result to smooth solutions on open domains U subset of M.