Sobre la clasificación de los enlaces de 3 puentes

Using a new way to represent links, that we call a  butterfly representation , we assign to each 3-bridge link diagram a sequence of six integers, collected as a triple  (p/n,q/m,s/l) , such that  p≥ q≥ s≥2 ,  0mirror image of a link, for the connected sum of two rational knots and for some important families of 3-bridge links. We present the open question: When do the triples (p/n,q/m,s/l)  and  (p'/n',q'/m',s'/l')  represent the same 3-bridge link?