Academy of Mathematics and Systems Science, CAS                         Colloquia & Seminars                                                   |                                                                                                                           | Speaker: |                                                 Weiming Shen,Capital Normal University                          |                                                                  | Inviter: |                          |                                                                                          Title:                          |                         Blow up sets of Ricci              curvatures of complete conformal metrics |                                                                                          Time & Venue:                          |                         2021.06.04 15:40-16:30              N205 室 |                                                                                          Abstract:                          |                                                 A version of the singular Yamabe problem in bounded domains yields                complete conformal metricswith negative constant scalar curvatures.                In this talk, we will talk about blow-up phenomena of Ricci curvatures                of these metrics on domains whose boundary is close to certain limit                set of a lower dimension. We will characterize the blow-up set according                to theYamabe invariant of the underlying manifold. In particular,                we will prove that all points in the lower dimension part of the                limit set belong to the blow-up set on manifolds not conformally                equivalent to the standard sphere and that all but one point in                the lower dimension part of the limit set belong to the blow-up                set on manifolds conformally equivalent to the standard sphere.                We will demonstrate by examples that these results are optimal.                          |                                                                   |                                                                           |                                                                |