论文标题
$ \ mathbb {r}^4 $中低熵的封闭超曲面是同位素
Closed hypersurfaces of low entropy in $\mathbb{R}^4$ are isotopically trivial
论文作者
论文摘要
我们表明，$ \ mathbb {r}^4 $中的任何封闭的连接的高表皮，熵小于或等于圆缸的熵与标准三球的同位素平滑。
We show that any closed connected hypersurface in $\mathbb{R}^4$ with entropy less than or equal to that of the round cylinder is smoothly isotopic to the standard three-sphere.
