Cool pictures produced with Sage-Combinat

• Graph of categories in Sage

  • Obtained with:

    sage: g = sage.categories.category.category_graph()
    sage: g.set_latex_options(format="dot2tex")
    sage: view(g, pdflatex=True, tightpage = True)

• Graph representing the Cartan matrix of the monoid of upper unitriangular boolean nxn matrices:

  • n=4

  • n=5 For the second one, I can't resist quoting Tom Denton: First they tell us we will never need more than 640k of RAM, then they tell us our documents should always be less than the length of a limousine...