Did you find the documentation? Open build/index.html in your browser. I have restricted my self to the disk and the sphere but that is a reflection of my interests and not of the implementation.
My main mathematical motivation is to work with skein relations. For this I will need to be in sage as it involves working with linear combinations. On Oct 1, 6:19 pm, Vincent Delecroix <[email protected]> wrote: > Hi Bruce, > > > I have implemented ribbon graphs (aka planar diagrams) > > This is in the repository > > >https://bitbucket.org/Bruce_Westbury > > > [...] > > I'm working on surface dynamics and need ribbon graphs at different > places. I have an implementation of ribbon graphs which store only > three permutations (as in the book of Lando and Zvonkine "Graphs on > Surfaces and Their Applications"). Actually they are "partial" > permutations (the domain need not be [0,...,n-1] but each permutation > is a list of n elements). More generally, they consider > constellations, which are n-tuples of permutations with the condition > that their product is the identity. > > But, at the difference from yours, what I call a ribbon graph is not > necessarily planar (it has a genus) which seems to be standard. It > seems that you are interested in what I would call "ribbon graph of > genus 0" ? > > I download your code but it is not clear at all for me what can I do > with it... Could you try to put more examples or explanations ? In > particular the definition of a ribbon graph. And also, what do you > intend to do with your code ? > > The part which deals with embedding should be very useful. > > I have more technical comments after the reading of your code, but I > first would like to know what are your mathematical and programming > motivations. > > Best, > Vincent -- You received this message because you are subscribed to the Google Groups "sage-combinat-devel" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/sage-combinat-devel?hl=en.
