3 papers
math.DG2026
Monotonicity of the modulus under curve shortening flow
Arjun Sobnack, Peter M. Topping
Given two disjoint nested embedded closed curves in the plane, both evolving under curve shortening flow, we show that the modulus of the enclosed annulus is monotonically increasi…
math.DG2026
The Harnack inequality without convexity for curve shortening flow
Arjun Sobnack, Peter M. Topping
In 1995, Hamilton introduced a Harnack inequality for convex solutions of the mean curvature flow. In this paper we prove an alternative Harnack inequality for curve shortening flo…
math.AP2025
Delayed parabolic regularity for curve shortening flow
Arjun Sobnack, Peter M. Topping
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 r…