Paper · Feb 8, 2024

The class of grim reapers in

Antonio Bueno, Rafael López

math.DGWider flowsarXiv:2402.05772v2
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Abstract

We study translators of the mean curvature flow in the product space \h^2\times\r. In \h^2\times\r there are three types of translations: vertical translations due to the factor \r and parabolic and hyperbolic translations from . A grim reaper in \h^2\times\r is a translator invariant by a one-parameter group of translations. The variety of translators and translations in \h^2\times\r makes that the family of grim reapers particularly rich. In this paper we give a full classification of the grim reapers of \h^2\times\r with a description of their geometric properties. In some cases, we obtain explicit parametrizations of the surfaces.

Comments: 22 pages, 8 figures. Last section has been improved, updated bibliography and new figures have been added

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  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.