# Is it possible to compute the face lattice of a polytope from its vertex-facet incidences?

HI there,

I wonder if within sage it is possible to compute the face lattice of a polytope from its vertex-facet incidences. There is a known algorithm by Kaibel and Pfetsch (see https://arxiv.org/pdf/math/0106043.pdf), and we wonder if it has already been implemented in Sage.

Thanks, and regards, Guillermo