Examples of compact embedded mean convex $\lambda$-hypersurfaces
Differential Geometry
2026-04-01 v1
Abstract
There is a well-known conjecture asserts that the round sphere should be the only compact embedded self-shrinker (i.e. -hypersurface) which is diffeomorphic to a sphere. S. Brendle confirmed the conjecture for 2-dimensional -hypersurfaces. For any dimensional -hypersurfaces, if , we constructed compact convex embedded -hypersurface which is diffeomorphic to a sphere and is not a round sphere. In this paper, for , we construct a compact mean convex embedded -hypersurface which is diffeomorphic to a sphere and is not a round sphere. In fact, for , there are no compact convex embedded -hypersurfaces which are diffeomorphic to spheres except a round sphere.
Cite
@article{arxiv.2603.29371,
title = {Examples of compact embedded mean convex $\lambda$-hypersurfaces},
author = {Qing-Ming Cheng and Junqi Lai and Guoxin Wei},
journal= {arXiv preprint arXiv:2603.29371},
year = {2026}
}