Geodesic
Minimal Plat Representations of Prime Knots and Links are not Unique
Canadian journal of mathematics, Tome 28 (1976) no. 1, pp. 161-167

Voir la notice de l'article provenant de la source Cambridge University Press

Let denote the 2-fold cyclic covering space branched over a link L in S3. We wish to describe an infinite family of prime knots and links in which each member L exhibits two minimal 6-plat representations, where the associated Heegaard splittings of are minimal and inequivalent. Thus each knot or link of that family admits at least two equivalence classes of 6-plat representations which are minimal. 
Montesinos, José M. Minimal Plat Representations of Prime Knots and Links are not Unique. Canadian journal of mathematics, Tome 28 (1976) no. 1, pp. 161-167. doi: 10.4153/CJM-1976-020-5
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