Oberseminar Differentialgeometrie: Alix Deruelle (Universität Paris-Saclay), Vortrag: Title: Ancient solutions to the Ricci flow coming out of spherical orbifolds:
(joint work with Tristan Ozuch)
Monday, 01.07.2024 16:00 im Raum SRZ 214
Abstract: Given a 4-dimensional Einstein orbifold that cannot be desingularized by
smooth Einstein metrics, we investigate the existence of an ancient
solution to the Ricci flow coming out of such a singular space. In this
talk, we will focus on singularities modeled on a cone over RP3 that are
desingularized by gluing Eguchi-Hanson metrics to get a first
approximation of the flow. We show that a parabolic version of the
corresponding obstructed gluing problem has a smooth solution: the
bubbles are shown to grow exponentially in time, a phenomenon that is
intimately connected to the instability of such orbifolds.
Angelegt am 07.03.2024 von Sandra Huppert
Geändert am 19.06.2024 von Sandra Huppert
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