Dehn filling
= Dehn filling
Let $X$ be a three-manifold with a torus boundary component and let $\alpha$ be a primitive slope on that torus. The Dehn filling $X(\alpha)$ glues in a solid torus whose meridian is identified with $\alpha$.
= Dehn filling
Let $X$ be a three-manifold with a torus boundary component and let $\alpha$ be a primitive slope on that torus. The Dehn filling $X(\alpha)$ glues in a solid torus whose meridian is identified with $\alpha$.