solidot新版网站常见问题，请点击这里查看。

## C^1 Deformations of almost-Grassmannian structures with strongly essential symmetry. (arXiv:1902.01801v1 [math.DG])

We construct a family of \$(2,n)\$-almost Grassmannian structures of regularity \$C^1\$, each admitting a one-parameter group of strongly essential automorphisms, and each not flat on any neighborhood of the higher-order fixed point. This shows that Theorem 1.3 of [9] does not hold assuming only \$C^1\$ regularity of the structure (see also [2, Prop 3.5]).查看全文

## Solidot 文章翻译

 你的名字 留空匿名提交 你的Email或网站 用户可以联系你 标题 简单描述 内容 We construct a family of \$(2,n)\$-almost Grassmannian structures of regularity \$C^1\$, each admitting a one-parameter group of strongly essential automorphisms, and each not flat on any neighborhood of the higher-order fixed point. This shows that Theorem 1.3 of [9] does not hold assuming only \$C^1\$ regularity of the structure (see also [2, Prop 3.5]).
﻿