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math.DG2021
A note on blowup limits in 3d Ricci flow
Beomjun Choi, Robert Haslhofer
We prove that Perelman's ancient ovals occur as blowup limit in 3d Ricci flow through singularities if and only if there is an accumulation of spherical singularities.
math.DG2021
Ricci limit flows and weak solutions
Beomjun Choi, Robert Haslhofer
In this paper we reconcile several different approaches to Ricci flow through singularities that have been proposed over the last few years by Kleiner-Lott, Haslhofer-Naber and Bam…
math.DG2021★ 2 cited
Translating surfaces under flows by sub-affine-critical powers of Gauss curvature
Beomjun Choi, Kyeongsu Choi, Soojung Kim
We classify the surfaces translating under the flows by sub-affine-critical powers of the Gauss curvature. This, in particular, lists all translating solitons possibly model Type I…