在紐結理論中,環面紐結(torus knot)是一種特殊的結。它由一對整參數p和q決定。
(p,q)-環面紐結可以表示為:
這個紐結所處的平面為 (r − 2)2 + z2 = 1(以圓柱坐標系表示)。
性質
環面紐結的交叉數:
- c = min((p−1)q, (q−1)p).
種類數:
右手側鏡像的衍生數:
結組數:
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