Hi Rob! On Feb 8, 6:04 pm, Rob Beezer <[email protected]> wrote: > There's a patch that involves both graph output and posets at > > http://trac.sagemath.org/sage_trac/ticket/7004 > > but I think any labeling might be more for presentation (rather than > isomorphisms).
Yes, that's my impression as well. For my applications, the labelling must be part of the structure, not part of the graphics. To put it differently, what I'd like to compute with in Sage is the category of Labelled Lattices (Labelled Posets would be fine as well), whose objects are labelled isomorphism classes of lattices (or posets) with labels (these are formal power series) on the nodes and on the arrows, and whose morphisms are lattice (poset) morphisms that are non- increasing on the labels (in each term of the formal power series). Best regards, Simon -- To post to this group, send an email to [email protected] To unsubscribe from this group, send an email to [email protected] For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
