https://neckpinch.com/authors/hyo-seok-jang/New arXiv papers by Hyo Seok Jang, from Neckpinch Tue, 10 Nov 2026 04:10:28 GMT https://neckpinch.com/papers/1806.02895/arxiv:1806.02895Thu, 07 Jun 2018 00:00:00 GMTHyo Seok Jang, Ki-Ahm Lee — We study the near-the-interface behavior of a compact convex scalar curvature flow with a flat side. Under suitable initial conditions on the flat side, we show that the interface propagates with a finite and non-degenerate speed until the flat side vanishes. Then we get optimal derivative estimates of the pressure-like function, optimal decay estimates of curvatures near the interface, and an Aronson-Bénilan-type curvature lower bound, from which we obtain the Hölder regularity of the ratio of the curvature to the optimal decay rate up to the free boundary. In the end, we obtain the short-time and all-time existence of the solution, smooth up to the interface.Other curvature flowsScalar curvatureFree boundary & capillary