Mathematical Physics: Classical Mechanics
《Mathematical Physics: Classical Mechanics》 · 第 13 页 · Chapter 1，Definition 1.6（meridian 部分）
Let \(K\) be an oriented knot in (oriented) \(S^3\) with solid torus neighbourhood \(N\). A meridian \(\mu\) of \(K\) is a non-separating simple closed curve in \(\partial N\) that bounds a disc in \(N\).