Paper · Aug 7, 2024

Delayed parabolic regularity for curve shortening flow

Arjun Sobnack, Peter M. Topping

math.APWider flowsarXiv:2408.04049v3
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Abstract

Given two curves bounding a region of area that evolve under curve shortening flow, we propose the principle that the regularity of one should be controllable in terms of the regularity of the other, starting from time . We prove several results of this form and demonstrate that no estimate can hold before that time. As an example application, we construct solutions to graphical curve shortening flow starting with initial data that is merely an function.

Comments: v1 was not submitted. v2 has numerous adjustments and improvements to the exposition. v3 has further adjustments and improvements

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The 8 papers on this site closest to this one, judged by the topics they share, the words and phrases in their titles and abstracts, and their authors. They are not its citations, but a map of the work around it. Papers here go back to 2021, plus the canon.

Connected papers This paper in the centre and the 8 papers closest to it around it, in date order clockwise from the top. The closer a paper sits to the centre, the stronger the connection. This paper Stabilization technique applied to curve shortening flow in ℝ³ (Hayk Mikayelyan, 2022)7Mikayelyan 2022 Non-uniqueness of curve shortening flow (Luke Thomas Peachey, 2022)4Peachey 2022 Compact curve shortening flow solutions out of non compact curve (Theodora Bourni and Martin Reiris, 2023)8Bourni 2023 Monotonicity of the modulus under curve shortening flow (Arjun Sobnack and Peter M. Topping, 2024)3Sobnack 2024 A delayed interior area-to-height estimate for the Curve Shortening Flow (Arjun Sobnack, 2025)1Sobnack 2025 The Harnack inequality without convexity for curve shortening flow (Arjun Sobnack and Peter M. Topping, 2026)2Sobnack 2026 The inverse curve shortening flow on the hyperbolic plane (Ivan Krznarić and Rafael López, 2026)5Krznarić 2026 On asymptotically conical curve shortening flows with convex projections (Alexander Mramor, 2026)6Mramor 2026
Closer to the centre: more closely connected. Clockwise from the top: oldest to newest. Ricci flowWider flowsalso connected to each other
  1. A delayed interior area-to-height estimate for the Curve Shortening Flow

    Arjun SobnackWider flows PDF

    Topics Curve shortening · Same author Arjun Sobnack · Shared terms “delayed parabolic”, “parabolic regularity”, “Graphical Curve”

  2. The Harnack inequality without convexity for curve shortening flow

    Arjun Sobnack and Peter M. ToppingWider flows PDF

    Topics Curve shortening · Same authors Arjun Sobnack, Peter M. Topping · Shared terms “delayed parabolic”, “parabolic regularity”, “graphical”

  3. Monotonicity of the modulus under curve shortening flow

    Arjun Sobnack and Peter M. ToppingWider flows PDF

    Topics Curve shortening · Same authors Arjun Sobnack, Peter M. Topping

  4. Non-uniqueness of curve shortening flow

    Luke Thomas PeacheyWider flows PDF

    Topics Curve shortening · Shared terms “flow starting”

Read around it

Background reading

The guides for the topics of this paper: what each idea is, why it matters, and the papers to read first.

In the guidebook

  1. 6A.10
    Curve Shortening and the First Geometric FlowsBook 6A · The Heat Equation and Its Relatives

    Shrinking circles, grim reapers, neckpinches and Huisken’s monotonicity, seen in the plane.

  2. 12C.4
    Loops, Disks and Curve ShrinkingBook 12C · Extinction and the Proof

    Perelman III §§2–3 and Morgan–Tian §§18.3–18.7: π₃ as spheres of loops, minimal disks and the −2π estimate, curve shrinking, ramps in M × S¹ and the estimates that make the argument rigorous.