11. A curve " C " has at most a finite number of singular points . 12. For example, a conic section is degenerate if and only if it has singular points . 13. :: Check whether the Hessian matrix is positive definite at the singular point or not. 14. Every second-order linear ODE with three regular singular points can be transformed into this equation. 15. That theory is too limited for algebraic surfaces, and even for curves with singular points . 16. Creekologists also placed wells on singular points of a territory in accordance with landscape features. 17. Consequently the singular points of this function occur at 18. As most such systems have no solution, many surfaces do not have any singular point . 19. The singular points of " V " are those where the'test to be a manifold'fails. 20. In the figure above the point where the two blue curves cross is a singular point .
