new page about the Fano plane example

Post date: Dec 21, 2014 4:32:50 AM

There is a new page "Fano Plane" with data about the number of rank r matrices with support contained in the edge set of the point-line incidence graph of the Fano plane. Stembridge showed this was the minimal support where the corresponding number of invertible matrices is not a polynomial in q. We compute the number of matrices for the other ranks and give other related non-polynomal examples.