For each pair (l,F) in the Schubert problem P, where l is a Schubert condition given as a partition, and F is a flag given as an n×n matrix, the function verifies if the matrix s satisfies the incidence conditions imposed by l with respect to the flag F, for each of the pairs in P, by computing the corresponding minor conditions.
This function was created for testing purposes and will be deleted later as it may not be numerically stable.