21. This technique measures the depth only a singular point at a time, and is therefore inefficient. 22. This is optimal, as the branch cuts must connect the singular points and to the infinity. 23. Otherwise, the singular points may form a curve. 24. Therefore, the singular points are the solutions of a system of four equations in three indeterminates. 25. What happens at a singular point of X? 26. A singular point is isolated if there is no other singular point in a neighborhood of it. 27. Furthermore, the non-wandering set of the system is precisely the union of singular points and periodic orbits. 28. The generalization of this equation to three arbitrary regular singular points is given by Riemann's differential equation. 29. There is another kind of singular points . 30. Let S be a translation surface as defined above and \ Sigma the set of singular points .
