Separating a chart
Teruo Nagase, Akiko Shima · arXiv (Cornell University) · 2016
In this paper, we shall show a condition for that a chart is C-move equivalent to the product of two charts, the union of two charts $\Gamma^*$ and $\Gamma^{**}$ which are contained in disks $D^*$ and $D^{**}$ with $D^*\cap D^{**}=\emptyset$.