2 problems

Let $Z_j$ be the singular points after the rotation used for the parameter line $\theta=\frac{(2j-1)\pi}{k-1}$, and let $s\in(0,1)$. The periodgon is studied through the periodic d…

Consider the singular points $z_j$ of the vector field studied in the source, and the periodic domain associated with each singular point. For every $j>1$, consider the boundary of…